Administração de Sistemas Linux: Serviços para Internet

download Administração de Sistemas Linux: Serviços para Internet

of 220

Transcript of Administração de Sistemas Linux: Serviços para Internet

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    1/220

    Cnehfhstrcj ni

    Thstiecs BhfuxTirvhjs pcrcHftirfit\clfir Phihrc Bij

    Orufj Cbvis @clufnis

    Cfnr _cejs Dcrfihrj

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    2/220

    C _F] _ini Fcdhjfcb ni Ifshfj

    i ]isquhsc qucbh`hdcnc djej

    uec Jrlcfhzcj Tjdhcb (JT),

    sifnj bhlcnc cj Ehfhstrhj nc

    Dhfdhc, ^idfjbjlhc i Hfjvcj

    ( ED ^ H ) i ris pjfs v i b pi b j

    ]rjlrcec Hftirehfhstirhcb _F],

    qui djftc dje c pcrthdhpcj njs

    ehfhstrhjs nc Inudcj (EID), nc

    Tcni (ET) i nc Dubturc (EhfD).

    ]hjfihrc fj cdissj Hftirfit fj

    Orcshb, c _F] pbcfikc i ecfte crini Hp, c rini pthdc fcdhjfcb

    cdcnehdc ni cbtj nisiepifaj.

    Dje ]jftjs ni ]risifc fcs

    ?< ufhncnis nc `inircj, c rini

    tie echs ni 1== hfsthtuhis

    djfidtcncs. Tj cprjxhecnceifti

    4,9 ehbais ni usurhjs usu`ruhfnj

    ni uec hf`rcistruturc ni riniscvcfcncs pcrc djeufhdcj,

    djeputcj i ixpirheiftcj,

    qui djftrhouh pcrc c hftilrcj

    iftri j shstiec ni Dhfdhc i

    ^idfjbjlhc, Inudcj Tupirhjr,

    Tcni i Dubturc.

    Dhfdhc, ^idfjbjlhci Hfjvcj

    Ehfhstrhj nc

    InudcjEhfhstrhj nc

    TcniEhfhstrhj nc

    DubturcEhfhstrhj nc

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    3/220

    \clfir Phihrc Bij

    Orufj Cbvis @clufnis

    Cfnr _cejs Dcrfihrj

    Cnehfhstrcj niThstiecs Bhfux;Tirvhjs pcrc

    Hftirfit

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    4/220

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    5/220

    \clfir Phihrc BijOrufj Cbvis @clufnisCfnr _cejs Dcrfihrj

    _hj ni KcfihrjIsdjbc Tupirhjr ni _inis?=30

    Cnehfhstrcj niThstiecs Bhfux;Tirvhjs pcrc

    Hftirfit

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    6/220

    Djpyrhlat ?=30 _ini Fcdhjfcb ni Ifshfj i ]isquhsc _F]

    _uc Bcurj Ebbir, 330 scbc 33=4

    ???8=-8=0 _hj ni Kcfihrj, _K

    Nhritjr Lircb

    Fibsjf Theis

    Nhritjr ni Tirvhjs i Tjbuis

    Kjs Buhz _hoihrj @hbaj

    Isdjbc Tupirhjr ni _inis

    Djjrnifcj Fcdhjfcb

    Bicfnrj Ecrdjs ni Jbhvihrc Luhecris

    Inhj

    Bhfdjbf nc Ectc

    _ivhsj ^dfhdc

    Orufj Cbvis @clufnis

    Djjrnifcj Cdcnehdc ni Cnehfhstrcj ni Thstiecs

    _ifctj Nucrti

    Iquhpi IT_ (ie jrnie cb`cothdc)

    Cnrhcfc ]hirrj, Cbyffi ]irihrc, Dibhc Ecdhib, Nirbhfc Ehrcfnc, Insjf Gjwcsg,

    Ibherhc Ocrojsc, Ivibbyf @ihtjsc, @ibhpi Fcsdheiftj, Bjurnis Tjfdhf, Budhcfc Octhstc,

    Buhz Dcrbjs Bjoctj i Xvi Ecrdhcb.

    Dcpc, prjkitj vhsucb i nhclrcecj

    ^idfjnishlf

    Pirsj

    4.=.=

    Isti ectirhcb nhnthdj `jh ibcojrcnj dje fs inudcdhjfchs. Tjbhdhtcejs qui qucbquir irrj ifdjf-

    trcnj ju nvhnc dje ribcj cj ectirhcb ju siu usj sikc ifvhcnj pcrc c iquhpi ni ibcojrcj nidjftinj nc Isdjbc Tupirhjr ni _inis, fj i-echb hf`jMisr.rfp.or. C _ini Fcdhjfcb ni Ifshfj i

    ]isquhsc i js cutjris fj cssueie qucbquir rispjfscohbhncni pjr iviftuchs ncfjs ju pirncs, c

    pissjcs ju oifs, jrhlhfcnjs nj usj nisti ectirhcb.

    Cs ecrdcs rilhstrcncs eifdhjfcncs fisti ectirhcb pirtifdie cjs rispidthvjs thtubcris.

    Nhstrhouhj

    Isdjbc Tupirhjr ni _inis_uc Bcurj Ebbir, 330 scbc 33=4

    ???8=-8=0 _hj ni Kcfihrj, _K

    attp;//isr.rfp.or

    hf`jMisr.rfp.or

    Ncnjs Hftirfcdhjfchs ni Dctcbjlcj fc ]uobhdcj (DH])

    B

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    7/220

    hhh

    Tuerhj

    Isdjbc Tupirhjr ni _inis

    C eitjnjbjlhc nc IT_ xh

    C quie si nisthfc xhh

    Djfvifis uthbhzcncs fisti bhvrj xhhh

    ]irehssis ni usj xhhh

    Djeiftrhjs i pirluftcs xhv

    Tjori js cutjris xhv

    3. NFT

    Hftrjnuj 3

    Njechf Fcei Tirvhdi (NFT) ?

    ]jr qui uthbhzcr NFT: ?

    Nifhis >

    Njefhj >

    [jfcs ni cutjrhncni 9

    Ixirddhj ni xcj 3 NFT cutajrhtcthvi cfswir 0

    _ilhstrj ni ridursjs 0

    Ecpiceiftj nhritj i rivirsj 8

    _isjbvir (risjbvinjr); dbhifti 3=

    Tirvhnjr NFT 33

    ^hpjs ni sirvhnjris NFT 33

    Tirvhnjris rchz NFT 34

    Istruturc nj NFT fj Bhfux 34

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    8/220

    hv

    Crquhvj ni djflurcj fcein.djf` 3>

    Crquhvjs ni ecpcs nc rini 3?

    Dje sirvhj ni nhritrhj >?

    BNC] >4

    @ufdhjfceiftj nj BNC] >>

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    9/220

    v

    Istruturc nc ocsi BNC] >9

    BNH@ >8

    @jrecs ni djfixj fj BNC] 9=

    >. BNC] CvcfcnjTdaiecs 94

    Dbcssis ni jokitjs 9>

    Ctrhoutjs 99

    Lirifdhcfnj sdaiecs 90

    Enubjs 90

    Ecfhpubcj nc ocsi 9

    _ipbhdcj nc ocsi BNC] 00

    _ipbhdcj Ecstir Q Tbcvi 00

    _ipbhdcj Ecstir x Ecstir 04

    feon 3>4

    seon 3>>

    whfohfnn 3>>

    Djfkuftj ni irrceiftcs 3>>

    Djfdihtjs 3>9

    Tceoc CNT 3>0

    Hfstcbcj i djflurcj 3>8

    ]creitrjs ni djflurcj pcrc cnehfhstrcj ni djftcs 39?

    Ocdgifns ni djftcs 39>

    seopcsswn 39>

    tnosce 39>

    bncpsce 399

    Ejnibjs ni silurcfc 399

    Tilurcfc fj fvib nj usurhj 399

    Ejnj ni Tilurcfc Njechf (Tilurcfc cj Fvib ni Ysurhj) 390

    Ejnj ni Tilurcfc CNT (Tilurcfc cj Fvib ni Ysurhj) 390

    Djftcs ni usurhjs, lrupjs i equhfcs 39

    Djflurcj nj JpifBNC] 309

    Hfhdhcbhzcj nc ocsi ni ncnjs BNC] Djflurcfnj j seobncp-tjjbs 300

    Djflurcfnj j Tceoc ]ND pcrc cdisscr c ocsi ni ncnjs BNC] 308

    Djflurcj ni djepcrthbaceiftj 3

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    13/220

    hx

    Lirifdhceiftj ni Djftc ni Ysurhjs 3

    Drhcr djftc 3

    _iejvir djftc 3

    Bhstcr djftc 3

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    14/220

    x

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    15/220

    xh

    C Isdjbc Tupirhjr ni _inis (IT_) c ufhncni nc _ini Fcdhjfcb ni Ifshfj i ]isquhsc (_F])

    rispjfsvib pibc nhssiehfcj nj djfaidheiftj ie ^idfjbjlhcs nc Hf`jrecj i

    Djeufhdcj (^HD). C IT_ fcsdi dje c prjpjstc ni sir c `jrecnjrc i nhssiehfcnjrc ni

    djepitfdhcs ie ^HD pcrc j djrpj tdfhdj-cnehfhstrcthvj ncs ufhvirshncnis `inirchs,

    isdjbcs tdfhdcs i ufhncnis `inirchs ni pisquhsc. Tuc ehssj `ufnceiftcb ricbhzcr cdcpcdhtcj tdfhdc nj djrpj `ufdhjfcb ncs jrlcfhzcis usurhcs nc _F], pcrc j ixird-

    dhj ni djepitfdhcs cpbhdvihs cj usj idcz i idhifti ncs ^HD.

    C IT_ j`iridi nizifcs ni dursjs nhstrhounjs fcs rics tiethdcs; Cnehfhstrcj i ]rjkitj

    ni _inis, Cnehfhstrcj ni Thstiecs, Tilurcfc, Enhcs ni Tupjrti Djbcojrcj Nhlhtcb

    i Ljvirfcfc ni ^H.

    C IT_ tceoe pcrthdhpc ni nhvirsjs prjkitjs ni hftirissi pobhdj, djej c ibcojrcj

    i ixiduj ni pbcfjs ni dcpcdhtcj pcrc `jrecj ni eubthpbhdcnjris pcrc prjkitjs

    inudcdhjfchs djej; `jrecj fj usj nc djf`irfdhc wio pcrc c Yfhvirshncni Coirtc nj

    Orcshb (YCO), `jrecj nj supjrti tdfhdj ni bcojrctrhjs nj ]rjhf`j i drhcj ni ue djf-

    kuftj ni dcrthbacs sjori rinis sie j pcrc j prjlrcec Ye Djeputcnjr pjr Cbufj (YDC).

    C eitjnjbjlhc nc IT_

    C bjsjc pincllhdc i c eitjnjbjlhc qui jrhiftce js dursjs nc IT_ sj ocsicncs fc

    cprifnhzclie djej djfstruj nj djfaidheiftj pjr eihj nc risjbuj ni prjobiecs tph-

    djs nc ricbhncni nj prjsshjfcb ie `jrecj. Js risubtcnjs jothnjs fjs dursjs ni fcturizc

    tirhdj-prthdc sj jthehzcnjs, pjhs j hfstrutjr, cuxhbhcnj pibj ectirhcb nhnthdj, ctuc fj

    cpifcs djej ixpjshtjr ni djfdihtjs i hf`jrecis, ecs prhfdhpcbeifti djej jrhiftcnjr nj

    cbufj fc ixiduj ni cthvhncnis djftixtucbhzcncs fcs shtucis nj djthnhcfj prjsshjfcb.

    C cprifnhzclie iftifnhnc djej c rispjstc nj cbufj cj niscj ni shtucis-prjobiecsieibacftis s ifdjftrcncs fc prthdc prjsshjfcb, qui sj supircncs pjr eihj ni cfbhsi,

    sftisi, kublceiftj, pifsceiftj drthdj i djfstruj ni ahptisis pcrc c risjbuj nj prj-

    obiec, ie cojrnclie jrhiftcnc cj nisifvjbvheiftj ni djepitfdhcs.

    Nissc `jrec, j hfstrutjr tie pcrthdhpcj cthvc i nhcblhdc djej jrhiftcnjr nj cbufj pcrc cs

    cthvhncnis ie bcojrctrhj. Ct eisej c cprisiftcj nc tijrhc fj hfdhj nc sissj ni cprif -

    nhzclie fj djfshnircnc uec shepbis ixpjshj ni djfdihtjs i hf`jrecis. J hfstrutjr

    ousdc hfdifthvcr c pcrthdhpcj njs cbufjs djfthfuceifti.

    Isdjbc Tupirhjr ni _inis

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    16/220

    xhh

    Cs sissis ni cprifnhzclie jfni si nj c cprisiftcj njs djftinjs i c ricbhzcj ncs

    cthvhncnis prthdcs te `jrectj prisifdhcb i issifdhcbeifti prthdj, uthbhzcfnj tdfhdcs ni

    istunj nhrhlhnj hfnhvhnucb, trcocbaj ie iquhpi i prthdcs jrhiftcncs pcrc j djftixtj ni ctuc-

    j nj `uturj ispidhcbhstc qui si pritifni `jrecr.

    Cs sissis ni cprifnhzclie nisifvjbvie-si ie trs itcpcs, dje prinjehffdhc ni tiepj

    pcrc cs cthvhncnis prthdcs, djf`jrei nisdrhj c siluhr;

    ]rheihrc itcpc; cprisiftcj nc tijrhc i isdbcridheiftj ni nvhncs (ni 0= c 8= ehfutjs).

    J hfstrutjr cprisiftc, ni ecfihrc shftthdc, js djfdihtjs tirhdjs djrrispjfniftis cj tiec

    nc sissj ni cprifnhzclie, dje cuxbhj ni sbhnis ie `jrectj ]jwir]jhft. J hfstrutjr

    bivcftc quistis sjori j djftinj njs sbhnis ie viz ni cpifcs cprisift-bjs, djfvhncfnj

    c turec riixj i pcrthdhpcj. Hssj ivhtc qui cs cprisiftcis sikce ejftjfcs i qui j

    cbufj si djbjqui ie pjshj ni pcsshvhncni, j qui rinuzhrhc c cprifnhzclie.

    Tilufnc itcpc; cthvhncnis prthdcs ni cprifnhzclie (ni 3?= c 39= ehfutjs).

    Istc itcpc c issfdhc njs dursjs nc IT_. C echjrhc ncs cthvhncnis njs dursjs cssfdrjfc i

    ricbhzcnc ie nupbcs ni cbufjs, qui cdjepcface j rhtej nj rjtihrj ni cthvhncnis prjpjstj

    fj bhvrj ni cpjhj. Hfstrutjr i ejfhtjr dhrdubce iftri cs nupbcs pcrc sjbudhjfcr nvhncs i

    j`iridir ixpbhdcis djepbieiftcris.

    ^irdihrc itcpc; nhsdussj ncs cthvhncnis ricbhzcncs (4= ehfutjs).

    J hfstrutjr djeiftc dcnc cthvhncni, cprisiftcfnj uec ncs sjbuis pjssvihs pcrc

    risjbv-bc, nivifnj ctir-si quibcs qui lirce echjr nhdubncni i pjbehdc. Js cbufjs sj

    djfvhncnjs c djeiftcr cs sjbuis ifdjftrcncs i j hfstrutjr ritjec tphdjs qui tiface

    lircnj nvhncs, istheubcfnj c pcrthdhpcj njs cbufjs. J hfstrutjr siepri istheubc js

    cbufjs c ifdjftrcrie sjbuis cbtirfcthvcs s sulirhncs pjr ibi i pibjs djbilcs i, dcsj

    ixhstce, c djeift-bcs.

    Tjori j dursj

    J dursj tie djej jokithvj ifshfcr c prjkitcr, hfstcbcr, djflurcr i nhspjfhohbhzcr js prhf-

    dhpchs sirvhjs pcrc Hftirfit ie uec rini ^D]/H]7 Djfaidheiftj njs djfdihtjs tirhdjs

    cssjdhcnjs c dcnc ue njs sirvhjs, dje c cprisiftcj ni difrhjs qui `cdhbhtie c suc dje -

    priifsj7 Cutifthdcj fjs sirvhjs, siepri qui pjssvib, dje j usj ni BNC]7 Js sirvhjs

    sj hfstcbcnjs i tistcnjs dje j usj hftifshvj ni cthvhncnis prthdcs7 Djfaidheiftj ni ojcs

    prthdcs pcrc c uthbhzcj oie ckustcnc njs sirvhjs ni prjnuj.

    C quie si nisthfc

    Issi dursj nisthfc-si c `jrecj ni prjsshjfchs rispjfsvihs pibc hfstcbcj, jpircj

    i ecfutifj ni pbctc`jrec djeputcdhjfcb pcrc djfixj dje c Hftirfit, liriftis ni ^H i

    prjlrcecnjris, nisni qui tiface js pr-riquhshtjs fidissrhjs.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    17/220

    xhhh

    Djfvifis uthbhzcncs fisti bhvrj

    Cs siluhftis djfvifis thpjlrdcs sj uscncs fisti bhvrj;

    Htbhdj

    Hfnhdc fjeis ni crquhvjs i ri`irfdhcs ohobhjlrdcs ribcdhjfcncs cj bjflj nj tixtj.

    Bcrlurc djfstcfti

    Hfnhdc djecfnjs i sucs jpis, vcrhvihs i ctrhoutjs, djftinj ni crquhvjs i risubtcnj nc

    scnc ni djecfnjs. Djecfnjs qui sirj nhlhtcnjs pibj usurhj sj lrh`cnjs ie filrhtj

    i pjssuie j prixj nj ceohifti ie usj (fj Bhfux fjrecbeifti # ju $, ifqucftj fj

    \hfnjws D;R).

    Djftinj ni sbhni

    Hfnhdc j djftinj njs sbhnis ri`iriftis cj dursj cprisiftcnjs ie scbc ni cubc.

    Teojbj

    Hfnhdc ri`irfdhc djepbieiftcr nhspjfvib ie shti ju plhfc fc hftirfit.

    Teojbj

    Hfnhdc ue njdueiftj djej ri`irfdhc djepbieiftcr.

    Teojbj

    Hfnhdc ue vnij djej ri`irfdhc djepbieiftcr.

    Teojbj

    Hfnhdc ue crquhvj ni cnhj djej ri`irfdhc djepbieiftcr.

    Teojbj

    Hfnhdc ue cvhsj ju pridcuj c sir djfshnircnc.

    Teojbj

    Hfnhdc quisthjfceiftjs qui istheubce c riixj ju cprisiftc djftinj ni cpjhj cj

    iftifnheiftj nj tiec ie quistj.

    Teojbj

    Hfnhdc fjtcs i hf`jrecis djepbieiftcris djej nhdcs, sulistis ni bihturc cnhdhjfcb ju

    eisej uec josirvcj.

    ]irehssis ni usj

    ^jnjs js nhrihtjs risirvcnjs _F].

    Clrcnidiejs siepri dhtcr istc `jfti qucfnj hfdbuhr pcrti nisti bhvrj ie jutrc jorc.

    Ixiepbj ni dhtcj; ^J__IT, ]inrjit cb.Cnehfhstrcj ni Thstiecs Bhfux; _inis i Tilurcfc.

    _hj ni Kcfihrj; Isdjbc Tupirhjr ni _inis, _F], ?=34.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    18/220

    xhv

    Djeiftrhjs i pirluftcs

    ]crc ifvhcr djeiftrhjs i pirluftcs sjori istc puobhdcj;

    Isdjbc Tupirhjr ni _inis _F]

    Ifnirij; Cv. Bcurj Ebbir 330 scbc 33=4 Ojtc`jlj

    _hj ni Kcfihrj _K ???8=-8=0

    I-echb; hf`jMisr.rfp.or

    Tjori js cutjris

    \clfir Phihrc Bjtie ?9 cfjs ni ixpirhfdhc fc ric ni ^H, ctucfnj djej Cfcbhstc ni

    Tupjrti i ie Djeputcj ni Cbtj Nisiepifaj, dje `jdj ie shstiecs jpircdhjfchs

    YFHQ/BHFYQ, ]jssuh lrcnucj ie Ectiethdc pibc @cdubncni ni Auecfhncnis ]inrj HH,

    dje ]s Lrcnucj ie Listj nc Hfjvcj pibj BFDD/YD]. Ctucbeifti jdupc j dcrlj

    ni Djjrnifcnjr ni ^idfjbjlhc nc Hf`jrecj nj Bcojrctrhj Fcdhjfcb ni Djeputcj

    Dhiftdc i ni Djjrnifcnjr Cnehfhstrcthvj nj ]jftj ni ]risifc nc _F] fj _hj ni Kcfihrj.

    ]rj`issjr nj Hfsthtutj Tupirhjr ni ^idfjbjlhc nc Hf`jrecj ni ]itrpjbhs, HT^ i nc Isdjbc

    Tupirhjr ni _inis nc _F] fcs rics ni Tilurcfc nc Hf`jrecj i Thstiecs Jpircdhjfchs.

    Orufj Cbvis @clufnis ^idfbjlj ie ^idfjbjlhc nc Hf`jrecj i nc Djeputcj pibj

    Hfsthtutj Tupirhjr ni ^idfjbjlhc (?==

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    19/220

    3

    Dcptubj

    3-

    NFT

    3NFT

    Djfaidir j shstiec Njechf Fcei Tirvhdi (NFT).

    Njechf Fcei Tirvhdi shstiec ni trcnuj ni ifnirijs.

    Hftrjnuj

    J istunj nisti dcptubj cprisiftc j djfdihtj nj sirvhj ni risjbuj ni fjeis (NFT),

    cojrncfnj suc uthbhzcj i ixiduj ni ecfihrc prthdc i hftuhthvc, pcsscfnj pibc hfstcbcj,

    djflurcj i tistis.

    Tj cprisiftcnjs js djfdihtjs i nifhis djeufs cj sirvhj NFT, tchs djej;

    3 Ispcj ni Fjeis (NFT)73 Njefhj7

    3 [jfcs ni cutjrhncni73 _ilhstrj ni ridursjs7

    3 Ecpiceiftj nhritj i rivirsj.

    3 Nibilcj ni njefhjs

    3 Tirvhj ie darjjt.

    Ie siluhnc, sirj vhstjs js thpjs i ejftclifs tphdcs ni ue sir vhj NFT, qui ifvjbvie;

    3 Tirvhnjr prherhj73 Tirvhnjr(is) Tidufnrhj(s)7

    3 Tirvhnjr Dcdai7

    3 Tirvhnjris rchz nc hftirfit.

    Fc itcpc siluhfti, sj cojrncnjs js cspidtjs nj NFT cssjdhcnjs suc uthbhzcj fj Bhfux,

    nisni hfstcbcj i djflurcj, ct `jrecs ni tisti i nhclfsthdj.

    jokithvjs

    djfdihtjs

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    20/220

    ?

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    ]jr bthej ve cs cthvhncnis prthdcs;

    3 Hfstcbcj nj sirvhnjr NFT7

    3 Djflurcj nj sirvhnjr NFT ]rherhj7

    3 Djflurcj nj sirvhnjr NFT Tidufnrhj.

    Njechf Fcei Tirvhdi (NFT) qJ qui j NFT:3 Tirvhj pcrc trcnuj ni fjeis ie ifnirijs H] i vhdi-virsc.

    3 ^ceoe nifjehfcnj Njechf Fcei Tystie ju Njechf Fcei Tir vir.

    J Tirvhj ni ^rcnuj ni Fjeis, ju shepbiseifti sirvhj ni fjeis, ue djepjfifti

    njs sirvhjs ie rinis qui pirehti c cpbhdcthvjs i sirvhjs bjdcbhzcr i `czir ri`irfdhc c

    hf`jrecis ie ue ceohifti ni rini. Js fjeis sj pcrti drthdc njs sirvhjs ie rinis,

    pjhs ckunce fc cnehfhstrcj ni tjnjs js ridursjs nhspjfvihs fc rini.

    Njechf Fcei Tirvhdi (NFT) `jrfidi sirvhjs ni fjeis i nhritrhjs ie rinis qui hepbi-

    eiftce c phbac ni prjtjdjbjs rcfsehsshjf Djftrjb ]rjtjdjb/Hftirfit ]rjtjdjb (^D]/H]).]jniejs djfshnir-bj djej ue shstiec ni ocfdj ni ncnjs nhstrhounj, qui trcnuz fjeis

    ni istcis ie ifnirijs, `jrfidifnj hf`jrecis sjori rjticeiftj i njefhjs.

    J NFT issifdhcb pcrc js shtis qui si djfidtce nhritceifti hftirfit. ]jre, eisej pcrc

    rinis bjdchs hsjbcncs qui uthbhzce prjtjdjbjs nc phbac ^D]/H], siepri `cz sifthnj uthbhz-bj.

    pcrthdubcreifti hepjrtcfti pcrc j shstiec ni djrrihj ibitrfhdj, pjhs fibi qui sj ni-

    fhnjs rilhstrjs qui hnifthdce c equhfc qui ecfhpubc cs djrrispjfnfdhcs ribcthvcs c ue

    ncnj fjei, hnifthdcfnj, csshe, jfni nitirehfcnj usurhj ridioi sucs djrrispjfnfdhcs.

    ]jr qui uthbhzcr NFT:

    q]rheihrj ejthvj;

    3 Equhfcs pjssuie echjr cdhbhncni ie bhncr dje feirjs.

    3 ]issjcs pri`irie uscr fjeis.

    3 Ixiepbj;

    ? ]lhfc nc _F].? Echs `dhb uscr www.rfp.orqui attp;//?==.34=.49.?4, dje

    4? ohts, ju H]P0, dje 3?1 ohts, fj ridjeifncnj pcrc usj ie fcvilcnjris i jutrjs

    sirvhjs. Nissi ejnj, ue usurhj nc hftirfit, cj uscr siu fcvilcnjr, pjni nhlhtcr ue

    ifnirij qui bai `cehbhcr, djej www.rfp.or, ie viz ni cblj djej ?==.34=.49.?4< ju

    ?==3;3?`=;o=3;3=3;;in, pjsshohbhtcfnj, nissc `jrec, qui iepriscs i pissjcs pjssce drhcr

    ifnirijs ocsicnjs ie fjeis, cssjdhcfnj-js cj fjei nc ieprisc ju prjnutj.

    Dcoi cj sirvhj NFT `czir c cssjdhcj iftri j fjei isdjbahnj pibj usurhj i j ifnirij H].

    Ye ejthvj cnhdhjfcb

    pcrc j usj ni ue

    shstiec ni ifniric-

    eiftj ocsicnj ie

    fjeis tjrf-bj

    hfnipifnifti nj

    ifnirij H] ie usj ie

    nitirehfcnj ejeiftj.

    b

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    21/220

    4

    Dcptubj

    3-

    NFT

    @riquiftieifti j cnehfhstrcnjr ni rini tie ni euncr c `chxc ni ifnirij uthbhzcnc pibjs

    vrhjs sirvhnjris qui djftrjbc. ^cb cbtircj pjni sir fidissrhc pibc euncfc nj objdj ni

    ifnirijs nhspjfhohbhzcnj, pjnifnj jdjrrir ie `ufj ni uec euncfc ni prjvinjr ni

    cdissj hftirfit, j qui prjvjdc c cbtircj ni ifnirijs pcrc j fjvj objdj ni ifnirijs

    nhspjfhohbhzcnj pibj fjvj prjvinjr.

    ]jnie chfnc jdjrrir ejnhdcis ie `ufj nc ricbjdcj ni ifnirijs nj prjvinjr ju

    eisej nc prprhc rini nj usurhj, pjr dcusc ni ricrrcfkjs dcuscnjs pjr cepbhcis juejnhdcis fc tjpjbjlhc nc rini.

    Nissi ejnj, ue usurhj qui cdissc j sirvhj vhc hftirfit, ju eisej vhc hftrcfit, fj pridhsc

    si prijdupcr dje cbtircis fc tjpjbjlhc i/ju ifniriceiftj nj sirvhnjr, k qui istcr

    cdisscfnj j sirvhnjr pibj fjei, dcoifnj cj NFT ecftir issc cssjdhcj ctucbhzcnc.

    crpc dje ljv inu ehb fit jrl or

    rfp

    isr

    ...

    Njefhjs lifrhdjs Njefhjs lijlrffidjs

    J NFT ue njs djepjfiftis oshdjs nc hftirfit. ]jniejs djfshnir-bj djej ue shstiec

    ni ocfdj ni ncnjs nhstrhounjs ni fvib eufnhcb, qui trcnuz ifnirijs sheobhdjs ni

    istcis ie ifnirijs H] fuerhdjs i vhdi-virsc. Sucfnj si usc sirvhjs fj trcfspcriftis,

    djej ^ibfit, @^], TTA i T@^], j usurhj pjni `jrfidir djej crlueiftj ue ifnirij

    sheobhdj ni istcj (j fjei ni ue djeputcnjr ajspinihrj). @ufis risjbvinjrcs (risjbvir

    `ufdthjfs) nj NFT trcnuzie issi ifnirij sheobhdj pcrc ue ifnirij H] fuerhdj.

    J rphnj drisdheiftj nc hftirfit bivju hftrjnuj njs djfdihtjs ni njefhjs i suonjefhjs

    NFT. Js njefhjs djepie c istruturc oshdc nj NFT i pjnie sir djepcrcnjs c nhritrhjs

    ie ue shstiec ni crquhvjs, dje dcnc njefhj cpcridifnj djej suorvjris ni hf`jrecis

    fj ispcj ni fjeis ni njefhj. Ye ifnirij sheobhdj ni istcj ie ue njefhj nivi sir

    fhdj, pjre issi eisej ifnirij sheobhdj pjni ixhsthr ie jutrjs njefhjs. Js njefhjs

    sj hepbieiftcnjs djej uec ahircrquhc, qui pjni sir vhstc djej uec rvjri hfvirthnc,

    djeicfnj fj njefhj-rchz, dukj ifnirij sheobhdj ricb , ju sikc, ue rtubj (bcoib) fubj.

    J njefhj rchz hepbieiftcnj pjr ue lrupj ni sirvhnjris ni fjeis dacecnjs ni sirvhnjris

    rchz. Js sirvhnjris rchz s te hf`jrecis djepbitcs c rispihtj njs njefhjs ni tjpj, qui si

    bjdcbhzce heinhctceifti c siluhr nj njefhj-rchz fc rvjri ni ahircrquhc ni njefhjs. Js nje-

    fhjs ni tjpj, pjr suc viz, te cpjftcnjris pcrc js sirvhnjris ie njefhjs ni fvihs hf`irhjris.

    Fifaue sirvhnjr, fie eisej js sirvhnjris rchz, tie hf`jrecis djepbitcs sjori

    tjnjs js njefhjs, ecs js sius cpjftcnjris pjnie hfnhdcr qui jutrjs sirvhnjris

    pjnie jrfidir c hf`jrecj nisikcnc. Csshe, js sirvhnjris rchz pjnie ct fj scoir

    c rispjstc pcrc uec pirluftc, ecs dirtceifti scoirj pcrc quie nhridhjf-bc.

    @hlurc 3.3

    Js njefhjs

    lifrhdjs, djej

    fit ju jrl,

    i js lijlrdjs,

    djej rfp.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    22/220

    >

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    Ni`hfhis

    q3 Njefhj.3 [jfcs ni cutjrhncni.

    3 _ilhstrj ni ridursjs.

    3 Ecpiceiftj;

    ? Nhritj.

    ? _ivirsj.

    3 Nibilcj ni njefhj.

    3 Tirvhj dje darjjt.

    C silurcfc nc hf`jrecj ue pjftj dr thdj pcrc c sjorivhvfdhc ncs jrlcfhzcis fc

    irc nc hf`jrecj. Prhjs sj js prjobiecs ifvjbvhnjs, fj iftcftj, c sjdhincni nipifni

    ncs hf`jrecis creczifcncs fjs shstiecs djeputcdhjfchs pcrc tjecncs ni nidhsj ie

    fildhjs, usj ni rljs nj ljvirfj, iftri jutrjs djftixtjs.

    C hf`jrecj pjni ixhsthr ie nhvirsjs `jrectjs; heprissc, creczifcnc ibitrjfhdceifti,

    trcfsehthnc pibj djrrihj djfvifdhjfcb ju ibitrfhdj itd. Tikc qucb `jr j jrectj, eihj ni

    creczifceiftj ju trcfsehssj, ridjeifnc-si qui ibc sikc prjtilhnc cniqucnceifti.

    Tifnj csshe, ni rispjfscohbhncni nc silurcfc nc hf`jrecj prjtil-bc ni vrhjs thpjs

    ni ceiccs, c e ni lcrcfthr c djfthfuhncni nj fildhj, ehfhehzcr rhsdjs i ecxhehzcr j

    ritjrfj sjori js hfvistheiftjs. @ibhzeifti, drisdifti c djfsdhifthzcj ncs jrlcfhzcis

    `rifti cj vcbjr i cs vubfircohbhncnis ni sius cthvjs, fj qui nhz rispihtj silurcfc.

    Ajki, c silurcfc nc hf`jrecj nitirehfcfti pcrc cssilurcr djepiththvhncni, budrcthv h-

    ncni, ctifnheiftj cjs riquhshtjs bilchs i c ojc heclie nc jrlcfhzcj kuftj cj eirdcnj

    i s jrlcfhzcis, tcftj fj sitjr pobhdj qucftj fj sitjr prhvcnj. Ie tchs djftixtjs, c

    silurcfc nc hf`jrecj ue djepjfifti qui vhcohbhzc fildhjs djej j i-Ljv ( ljvirfjibitrfhdj) ju i-djeeirdi (djerdhj ibitrfhdj).

    Njefhj

    q3 Tuorvjri nj ispcj ni fjeis NFT.3 Fjei ni njefhj djepbitj, tceoe nifjehfcnj @ubby Sucbhin Njechf Fcei

    (@SNF), djfshsti ie;

    ? Fjei nc equhfc.

    ? Fjei nj njefhj.

    ? Njefhj ni tjpj.? Ixiepbj;

    4 www.rfp.or .

    4 www; equhfc (ju ajst).

    4 rfp; njefhj.

    4 or; njefhj ni tjpj (tjp bivib njechf).

    Ti pridhsssiejs bieorcr tjnjs js ifnirijs H] ncs plhfcs nc wio qui vhshtcejs nhcrhc-

    eifti, dcrcejs bjudjs. Tiris auecfjs fj sj ojfs ie bieorcr srhis ni feirjs. Fj

    iftcftj, sjejs ojfs fc bieorcfc ni pcbcvrcs, i pjr hssj uscejs js fjeis ni njefhjs.

    Pjd pjssuh, prjvcvibeifti, vrhjs fjeis ni njefhjs lucrncnjs ie suc dcoic.

    Ixiepbjs; rfp.or, ridihtc.`czifnc.ljv.or, l3.dje.or, eht.inu, ljjlbi.dje itd.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    23/220

    9

    Dcptubj

    3-

    NFT

    Cs pcrtis dje, inu i or nissis sirvhnjris sj dacecncs ni njefhjs prhfdhpchs ju nje-

    fhjs ni prheihrj fvib. Ixhstie vrhjs njefhjs prhfdhpchs, hfdbuhfnj dje, inu, ljv,

    ehb, fit i jrl, cbe ncs shlbcs ni nucs bitrcs ni dcnc pcs, pcrc hnifthdcr c jrhlie, ie

    hflbs. Fj dustc bieorcr qui js njefhjs rilhstrcnjs fjs IYC fj pjssuie c hnifthdcj

    (us). Ie dcnc njefhj prhfdhpcb ixhsti uec ifjrei bhstc ni njefhjs sidufnrhjs. Fjvjs

    thpjs ni njefhj `jrce drhcnjs pcrc j`iridir eibajr hnifthdcj. Ixiepbjs echs djfai -

    dhnjs sj; prj`issjr prj`.or, pissjchs fje.or, rini ni tibivhsj tv.or itd.

    Ye njefhj uec suorvjri nj ispcj ni fjeis NFT. Ye njefhj djepbitj, tceoe

    nifjehfcnj ni @ubby Sucbhin Njechf Fcei (@SNF), djfshsti ocshdceifti ie ue fjei

    ni equhfc, ue fjei ni njefhj i ue njefhj ni tjpj. J ifnirij www.rfp.or ue

    ixiepbj ni @SNF, jfni;

    3 www ; fjei nc equhfc (ju ajst)7

    3 rfp; fjei nj njefhj7

    3 or; njefhj ni tjpj.

    Dcnc suorvjri djfshnircnc pcrti ni ue njefhj. Fissi dcsj, rfp `cz pcrti nj njefhj

    or. Jutrc shtucj ri`irifti c suonjefhjs niftrj nc prprhc rini. Djfshniri j ifni-rij www.n`.rfp.or, fj qucb n` uec suorvjri ni rfp i `cz pcr ti nissi njefhj.

    C siluhr, cblufs ixiepbjs.

    Njefhj rfp;

    3 www.rfp.or; equhfc www fj njefhj rfp.or.

    3 echb.rfp.or; equhfc echb fj njefhj rfp.or.

    Njefhj n`.rfp.or;

    3 www.n`.rfp.or; equhfc wwwfj njefhj n`.rfp.or.

    3 echb.n`.rfp.or; equhfc echbfj njefhj n`.rfp.or.

    [jfcs ni cutjrhncni

    q3 ^ceoe nifjehfcncs Ttcrt j` Cutajrhty (TJC).3 Njefhjs i zjfcs ni cutjrhncni fj sj siepri shffhejs;

    ? Ye fjei ni njefhj si ri`iri c ue fhdj pjftj fj ispcj ni fjeis.

    ? Yec zjfc ni cutjrhncni ri`iri-si cj bjdcb fj qucb istj creczifcnjs js ncnjssjori cs equhfcs (ajsts) nj njefhj.

    Dcnc fjei ni njefhj pjssuh ue rilhstrj ni zjfc ni cutjrhncni qui cprisiftc hf`jrec-

    is nj njefhj i nc zjfc ie qui j njefhj ist hfsirhnj. Iftri isscs hf`jrecis, istj;

    3 Fjei nj sirvhnjr ni fjeis prherhj7

    3 Ifnirij ibitrfhdj (i-echb) nj rispjfsvib pibj njefhj7

    3 Feirj ni srhi (sirhcb fueoir) nc zjfc7

    3 Hftirvcbj ni ri`risa; hfnhdc j tiepj, ie silufnjs, qui j sir vhnjr ni fjeis sidufnrhjnivi virhdcr pjr ctucbhzcis fj sirvhnjr ni fjeis prherhj7

    3 Hftirvcbj ni ritry; hfnhdc j tiepj, ie silufnjs, qui j sirvhnjr ni fjeis sidufnrhjclucrnc pjr uec rispjstc nj sirvhnjr ni fjeis prherhj, cftis ni hfnhdcr uec `cbac7

    3 ^iepj ni ixphri; hf`jrec j tiepj, ie silufnjs, cps j qucb j sir vhnjr fj echs ris-pjfni pjr hf`jrecis ncquibc zjfc7

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    24/220

    0

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    3 ^iepj ehfheue; hf`jrec j ^hei ^j Bhvi (^ ^B) ni`cubt dcsj j njefhj fj ispidhquiue ^^B7

    3 ^iepj ni vhnc, ^hei ^j Bhvi (^^B); vcbjr pcsscnj pibj sirvhnjr ni fjeis hfnhdcfnj, pcrc cequhfc qui jrhlhfju c pirluftc, j tiepj qui c hf`jrecj pjni sir ecfthnc ie dcdai.

    Ixirddhj ni hxcj 3iNFT cutajrhtcthvi cfswirSucb ncs cbtirfcthvcs c siluhr riprisiftc uec rispjstc fjf-cutajrhtcthvi cfswir qucfnj

    ricbhzcejs uec djfsubtc c ue sirvhnjr ni NFT:

    (3) Hfnhdc qui j tiepj ni vhnc (^^B) ixphrju.

    (?) _iprisiftc uec rispjstc jrhlhfcnc nj dcdai bjdcb.

    (4) Hfnhdc ue irrj fj rilhstrj TJC.

    (>) _itjrfc c hf`jrecj nj prxhej sirvhnjr NFT.

    (9) Hfnhdc qui j dcdai nj sirvhnjr ni NFT ist ifvififcnj (NFT ]jhsjfhfl).

    _ilhstrj ni ridursjs

    q3 ^jnjs js njefhjs pjnie tir ue djfkuftj ni rilhstrj ni ridursjs cssjdhcnj.3 C virncnihrc `ufj nj NFT ecpicr fjeis ni njefhj ie rilhstrjs ni ridursj.

    Ye rilhstrj ni ridursj djepjstj pjr dhfdj dcepjs. Ieojrc ibis sikce djnhdcnjs ie

    ohfrhj pcrc echjr idhfdhc, c echjrhc njs rilhstrjs ni ridursj cprisiftcnc djej tixtj

    ni CTDHH , sifnj uec bhfac pjr rilhstrj ni ridursj, djej ejstrcnj c siluhr; njefhj,

    ^iepj ni vhnc (^^B), Dbcssi, ^hpj i Pcbjr.

    J dcepj Njefhj ri`iri-si cj njefhj pcrc j qucb issi rilhstrj cpbhdcnj. Fjrecb-

    eifti, ixhstie euhtjs rilhstrjs pcrc dcnc njefhj i dcnc dphc nj ocfdj ni ncnjs dcrrilc

    hf`jrecj sjori ebthpbjs njefhjs. Issi dcepj c dacvi prherhc ni prjdurc uscnc pcrc

    scths`czir cs ousdcs. C jrnie njs rilhstrjs fj ocfdj ni ncnjs fj shlfhdcfti. Sucfnj

    uec ousdc `ihtc sjori ue nitirehfcnj njefhj, sj nivjbvhnjs tjnjs js rilhstrjs

    pinhnjs, iepcribacnjs ie dbcssi.

    J dcepj ^iepj ni vhnc (^hei ^j Bhvi) n uec hfnhdcj nj fvib ni istcohbhncni nj rilhstrj.

    Hf`jrecis euhtj istvihs ridioie vcbjr cbtj, djej 10>== (j feirj ni silufnjs ie ue

    nhc). Hf`jrecis cbtceifti vjbtihs te ue vcbjr piquifj, djej 0= (ue ehfutj).

    J tirdihrj dcepj ni tjnj rilhstrj ni ridursj c Dbcssi. ]crc hf`jrecj ni sirvhnjr

    hftirfit, siepri HF. ]crc hf`jrecis fj ribcdhjfcncs dje c hftirfit, sj uscnjs jutrjsdnhljs, qui fc prthdc sj vhstjs rcrceifti.

    J dcepj ^ hpj `jrfidi c hf`jrecj nj thpj ni rilhstrj. Js thpjs echs hepjrtcftis sj;

    3 Ttcrt j` Cutajrhty Hf`jrecthjf (TJC); djfte hf`jrecis ri`iriftis cj sirvhnjr nifjeis NFT nj njefhj, virsj nj ocfdj ni ncnjs NFT, i-echb nj cnehfhstrcnjr rispjf-

    svib pibj njefhj itd7

    3 C (Ajst Cnriss); ecfte c tcoibc ni ifnirijs H] njs ajsts ecftifnj djepcthohbhncni djec tcoibc cfthlc ni ajsts. ]irehti ecpicr ue fjei ni ajst pcrc ue ju dcnc ifnirij H]7

    3 Fcei Tirvir Hnifthdcthjf (FT); ispidhdc js sirv hnjris ni fjeis rispjfsvihs pibjnjefhj, zjfc ju suozjfc7

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    25/220

    1== HF C ?==.34=.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    27/220

    8

    Dcptubj

    3-

    NFT

    3 EQ; hnifthdc ue sirvhnjr ni djrrihj ibitrfhdj nj njefhj. Nivi sir cdjepcfacnj ni uefeirj ni prhjrhncni dcsj ixhstc echs ni ue sirvhnjr ni djrrihj ibitrfhdj fj njefhj7

    3 FT; hfnhdc j sirvhnjr ni fjeis nj njefhj7

    3 DFCEI; hfnhdc fjei dcffhdj, j qui pirehti c ue nitirehfcnj sirvhnjr rispjfnir pjrechs ni ue fjei7

    3 AHF@J; hfnhdc hf`jrecj sjori j acrnwcri i sj`twcri7 pjudj uthbhzcnj fc prthdc73 ^Q ; hfnhdc hf`jrecis ni usj lircb.

    Ecpiceiftj nhritj i rivirsj

    J ecpiceiftj nhritj uthbhzcnj fc trcnuj ni fjeis ie ifnirijs H], qui sir uthbhzcnj

    djej nisthfctrhj nj pcdjti c sir trcfsehthnj pibc rini.

    Sucb j ifnirij

    ni echb.rfp.or:

    _ispjstc;

    ?==.34=.41.00

    Tirvhnjr

    NFT bjdcb

    Tirvhnjr

    NFT or

    Tirvhnjr

    NFT rfp

    Tirvhnjr

    NFT rchz

    3

    1

    >

    9

    0

    ^hpjs ni

    sirvhnjris NFT.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    32/220

    3>

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    Js crquhvjs pjnie tir qucbquir fjei, ecs nivie istcr nifhnjs ie fcein.djf`(cquh

    istcejs uscfnj js pcnris nc hftirfit).

    3 /itd/ohfn/fcein.djf`; prhfdhpcb crquhvj ni djflurcj nj sirvhnjr NFT7

    3 /itd/ohfn/no.rjjt; crquhvj qui cpjftc pcrc ajsts ixtirfjs, issifdhcb qucfnj j sirvhnjristhvir sifnj uthbhzcfnj fc hftirfit7

    3 itd/ohfn/no.bjdcb; rispjfsvib pibc risjbuj nhritc nj njefhj bjdcbajst7

    3 /itd/ohfn/no.3?

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    33/220

    39

    Dcptubj

    3-

    NFT

    cbbjw-ridurshjf { hftirfj7 }7

    }7

    zjfi . HF {

    typi ahft7

    `hbi dcdahfl-ixcepbi/fcein.dc7

    }7

    zjfi bjdcbajst HF {

    typi ecstir7

    `hbi dcdahfl-ixcepbi/bjdcbajst.zjfi7

    cbbjw-upncti { fjfi7 }7

    }7

    zjfi =.=.3?

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    34/220

    30

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    J crquhvj/itd/ohfn/fcein.djf` j prhfdhpcb crquhvj nj OHFN, i j rispjfsvib pibcs hf`jr-

    ecis uscncs pcrc qui j sirv hj sikc ricbhzcnj. J crquhvj pjssuh hf`jrecis ri`iriftis

    cj nhritrhj jfni istj js crquhvjs ni ncnjs nj NFT, js sirv hnjris sidufnrhjs, cs zjfcs

    ctifnhncs, iftri jutrcs hf`jrecis pirthfiftis.

    J crquhvj ni djflurcj fcein.djf`pjssuh uec srhi ni dbusubcs qui sj bhncs pibj nciejf.

    Isscs dbusubcs sj istruturcs qui clrupce stctieiftsribcdhjfcncs, qui sj djej nhrithvcs

    qui fjrtihce j djftrjbi nj djepjrtceiftj nj sirvhnjr ie ribcj c vrhcs shtucis.

    _ibcj ni dbusubcs qui pjnie sir uthbhzcncs;

    3 Cddiss Djftrjb Bhst (CDB); nifi uec ju echs bhstcs ni djftrjbi ni cdissj, lrupj niajsts i usurhjs7

    3 Djftrjbs; nisdrivi i djftrjbc j cdissj cj dcfcb ni djftrjbi uthbhzcnj pibj cnehfhstrcnjrdje c dacvi rfnd (_iejti Fcei Nciejf Djftrjb)7

    3 hfdbuni; fj prjprhceifti uec dbusubc, ecs ri`irfdhc c jutrjs crquhvjs jfni pjniesir djbjdcncs dbusubcs qui hfuifdhce fj `ufdhjfceiftj nj sirvhnjr, i qui istj ie

    sipcrcnj fjrecbeifti pjr quistis ni silurcfc ju `cdhbhncni ni cnehfhstrcj7

    3 giy; nifi dacvis uthbhzcncs ie jpircis qui ixhlie cutifthdcj73 bjllhfl; nifi j fvib ni bjl i c bjdcbhzcj njs crquhvjs ni bjl7

    3 bwris; prjprhincnis nj OHFN qucfnj usc ue risjbvinjr bivi7

    3 jpthjfs; stctieifts pcrc djftrjbi ni jpis lifrhdcs ju lbjochs, qui pjnie sir sjori-pjstcs pjr djflurcis fjs crquhvjs ni zjfc7

    3 sirvir; nifi j djepjrtceiftj nj sirvhnjr cj rispjfnir ju cdisscr ue sirvhnjr riejtj7

    3 trustin-giys; nifi jpis pcrc cdissjs qui ixhlie cutifthdcj7

    3 vhiw; djftrjbc cs `ufdhjfcbhncnis nj OHFN ie `ufj nj ifnirij nj ajst 7

    3 zjfi; nifi cs zjfcs ecfthncs pibj sirvhnjr.

    Cs hf`jrecis nhspjfhohbhzcncs pjr eihj njs stctieifts fj crquhvj ni djflurcj

    pjnie chfnc sir djfshnircncs ie rczj nc ufj qui djftrjbce;

    3 quirhis; djftrjbce j djepjrtceiftj ncs quirhis7

    3 trcfs`ir; djftrjbce j djepjrtceiftj ncs trcfs`irfdhcs ni zjfcs7

    3 jpircthjfs; djftrjbce j djepjrtceiftj nj sirv hnjr7

    3 sidurhty; djftrjbce j djepjrtceiftj nj sirv hnjr ie ribcj silurcfc7

    3 stcthsthds; djftrjbce j djepjrtceiftj nc pcrti ni bjl nj sirvhnjr.

    Yec bhstc djepbitc njs stctieifts pjni sir ifdjftrcnc fc njdueiftcj nj OHFN 8.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    35/220

    31==

    M HF TJC ecr.ixiepbj.dje. rjjt.ecr.ixiepbj.dje. (

    ? 7 Tirhcb

    0=>1== 7 _i`risa

    10>== 7 _itry

    ?>38?== 7 Ixphri

    0=>1== ) 7 Filcthvi Dcdai ^^B

    M HF FT ecr.ixiepbj.dje.

    bjdcbajst HF C 3?

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    36/220

    31

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    3 Tirhcb; feirj sirhcb nc zjfc nivi sir hfdrieiftcnj siepri qui `jr `ihtc cbluec cbti-rcj, pcrc qui js sirvhnjris sidufnrhjs pjssce si ctucbhzcr7

    3 _i`risa; feirj ni silufnjs iftri pinhnjs ni ctucbhzcj jrhufnjs njs sir vhnjrissidufnrhjs7

    3 _itry; feirj ni silufnjs qui js sirvhnjris sidufnrhjs vj ispircr pcrc ri`czir uecdjfsubtc qui cbaju7

    3 Ixphri; feirj ni silufnjs qui ue sirvhnjr, ecstir ju sbcvi, ispircr pcrc djfshnircrc hf`jrecj ixphrcnc, si ibi fj djfsiluhr cbdcfcr j sirvhnjr ni fjeis prherhj7

    3 Ehfheue; j ^^B ni`cubt dcsj j njefhj fj ispidhqui ue ^^B7

    3 ^hei tj Bhvi (^^B); feirj ni silufnjs qui ue fjei ni njefhj dcdaicnj bjdcb-eifti cftis ni ixphrcr i ritjrfcr pcrc js sirvhnjris ni fjeis ni cutjrhncni pcrc

    ctucbhzcj ncs hf`jrecis.

    Djf`jrei eifdhjfcnj cftirhjreifti, j `ufdhjfceiftj nj sirvhnjr NFT ocsicnj ie

    zjfcs djftrjbcncs pjr ecpcs ni rini. Js crquhvjs ni ecpcs ni rini sj js crquhvjs qui

    djfte cs hf`jrecis ni dcnc uec ncs zjfcs ctifnhncs pibj sirvhnjr NFT. Tj ni njhs

    thpjs; trcnuj nhritc i trcnuj rivirsc. Tj js crquhvjs jfni dcnc ue njs djeputcnjris

    qui pirtifdie c uec ieprisc sj nisdrhtjs, dje fjei, ifnirij H] i sirvhnjr ni i-echb,

    iftri jutrcs hf`jrecis, djej ^hei ^j Bhvi (^ ^B), sirhcb pcrc djftrjbi ni cbtircis itd.

    Ye sirvhnjr NFT fidisshtc ni pibj eifjs quctrj crquhvjs dje ecpcs ni rini;

    3 rjjt.sirvirs; ecfte uec ribcj njs sirvhnjris rchz nc hftirfit 7 fjrecbeifti dceie ue crquhvj nifjehfcnj fcein.dc7

    3 bjdcbajst; pirehti c risjbuj nj fjei bjdcbajst pcrc j ifnirij ni bjjp bjdcb 3?1== ) 7 Filcthvi Dcdai ^^B

    7

    M HF FT ecr.ixiepbj.dje.

    34= HF ]^_ ecr.ixiepbj.dje.

    343 HF ]^_ sjb.ixiepbj.dje.

    Crquhvjs dje js ecpcs ni rini;

    3 rjjt.sirvirs (crquhvj no.rjjt); sirvhnjris rchz nc hftirfit7

    3 bjdcbajst (crquhvj no.bjdcb); hf`jrecis sjori j fjei bjdcbajst7

    3 nhridt-ecp (crquhvj no.zjfi); hf`jrecis sjori j njefhj nc rini7

    3 rivirsi-ecp (crquhvj no.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    37/220

    38

    Dcptubj

    3-

    NFT

    Crquhvj risjbv.djf`

    qJ crquhvj/itd/risjbv.djf` uscnj pibcs equhfcs Bhfux pcrc bjdcbhzcr j sirvhnjr NFT.3 Nhrithvcs;

    ? fceisirvir.

    4 Ifnirij H] nj sirvhnjr NFT.

    ? sicrda.

    4 Ispidhdc js njefhjs c sirie uthbhzcnjs fc ousdc pibj ajst c qui si nisikcdjfidtcr.

    4 C cnhj ni euhtjs njefhjs pjni dcuscr bifthnj fc risjbuj njs fjeis.

    ? njechf.

    4 Cbtirfcthvc nhrithvc sicrda.

    Issi j crquhvj rispjfsvib pjr hfnhdcr quie sj js sirvhnjris ni fjei pcrc djfsubtcs ni

    NFT. Ibi djfte uec bhstc ni njefhjs cj qucb pirtifdi c equhfc i js sir vhnjris ni fjei

    qui sirj djfsubtcnjs.

    Crquhvj ni djflurcj NFT risjbv.djf`

    sicrda shti.bjdcb

    fceisirvir 38?.301.=.?9>

    fceisirvir 38?.301.=.3

    3 sicrda; ispidhdc js njefhjs cjs quchs c equhfc pirtifdi7

    3 fceisirvir; ispidhdc j ifnirij H] njs sirvhnjris NFT7

    3 njechf; cbtirfcthvc cj sicrda.

    Cnhdhjfcbeifti c isscs zjfcs, jutrcs pjnie sir hfdbuncs. Nivie sir hfdbuncs zjfcs pcrc

    dcnc rini ju njefhj cnhdhjfcb sjo rispjfscohbhncni nj sirvhnjr, cbe ni zjfc pcrc bhncr

    dje sirvhnjr sidufnrhj. J crquhvj/itd/risjbv.djf` j crquhvj qui pjssuh c hf`jrecj nj

    djeputcnjr qui ist rjncfnj j sirvhj NFT i j njefhj c sir uthbhzcnj.

    J crquhvj risjbv.djf` uthbhzcnj pibj risjbvinjr (risjbvir) ncs equhfcs Bhfux pcrc bjdcbhzcr

    j sirvhnjr NFT. C prhfdhpcb hf`jrecj nissi crquhvj j ifnirij H] nj sirvhnjr NFT,

    hf`jrecnj pibc nhrithvc fceisirvir 2Ifnirij H]6.

    ]jni chfnc sir uthbhzcnc c nhrithvc sicrdaju njechf, thb ie djfsubtcs NFT qucfnj hf`jr-

    ecnj sjeifti j fjei nj ajst ie viz nj ifnirij djepbitj (@SNF).

    Prhjs njefhjs pjnie sir cnhdhjfcnjs, j qui nivi sir ivhtcnj, pjhs dcuscr uecdjfsubtc NFT ie dcnc ue nibis.

    Ixirddhj ni hxcj ?iTirvhnjr ni NFT Dcdai

    Hfstcbi i djfluri j sirvhnjr ni NFT cpifcs dje c `ufj ni dcdai.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    38/220

    ?=

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    Nibilcj ni njefhjs

    Djej scoiejs, j shstiec NFT `ufdhjfc ctrcvs nc nibilcj, jfni ue sirvhnjr cpjftc

    pcrc jutrj, sudisshvceifti, ct qui c hf`jrecj qui si prjdurc sikc ifdjftrcnc. Isscs

    djfixis fj sj drhcncs pjr cdcsj, i ixhlie uec shfdrjfhzcj pjr pcrti njs cnehfhstrc-

    njris njs nhvirsjs njefhjs.

    Tupjfacejs iftj qui sikc ihtj j rilhstrj nj njefhj ixiepbj.dje.or. Nurcfti jprjdissj ni rilhstrj ni njefhjs, sir fidissrhj hfnhdcr fj efhej njhs sirvhnjris NFT

    qui istikce rispjfnifnj pibj njefhj ixiepbj.dje.or. Dcsj issis sirvhnjris istikce

    djrritceifti djflurcnjs, i cs niechs hf`jrecis fidissrhcs istikce tceoe djrritcs,

    j prjdissj fcbhzcnj dje c hfsirj ni rilhstrjs FT pcrc j fjvj njefhj fjs sir vhnjris

    rchz nj njefhj O_.

    Tupjfnj qui js sirv hnjris NFT nj njefhj ixiepbj.dje.or sikce fs3.ixiepbj.dje.ori

    fs?.ixiepbj.dje.or, js rilhstrjs hfsirhnjs fjs sirvhnjris nj _ILHT^_J.O_ tirj c `jrec;

    ixiepbj.dje. HF FT fs3.ixiepbj.dje.

    fs3.ixiepbj.dje. HF C 38?.301.=.3

    ixiepbj.dje. HF FT fs?.ixiepbj.dje.

    fs?.ixiepbj.dje. HF C 38?.301.=.?

    Tirvhnjris NFT, iftritcftj, pjnie ctifnir c nizifcs ju diftifcs ni njefhjs. Ti quh -

    sirejs rilhstrcr j njefhj jutrjixiepbj.dje.or, sjo c rispjfscohbhncni njs eisejs

    sirvhnjris NFT, j sir vhnjr rchz nj njefhj O_, nivir djftir cpifcs js siluhftis rilhstrjs;

    jutrjixiepbj.dje. HF FT fs3.ixiepbj.dje.

    jutrjixiepbj.dje. HF FT fs?.ixiepbj.dje.

    Ct cljrc vhejs nucs nibilcis. Js sirvhnjris nj njefhj rchz nibilcrce pcrc j

    _ILHT^_J.O_ cutjrhncni sjori tjnjs js njefhjs tirehfcnjs ie O_. J _ILHT^_J.O_,

    pjr suc viz, ricbhzju c nibilcj ni cutjrhncni sjori j njefhj ixiepbj.dje.or pcrc js

    sirvhnjris NFT fs3.ixiepbj.dje.ori fs?.ixiepbj.dje.or. Ie jutrcs pcbcvrcs, js tirejs

    nibilcj ni cutjrhncni shlfhdce shepbiseifti qui si cblue nisikcr jotir hf`jrecis

    djrritcs sjori djeputcnjris qui tirehfce ie ixiepbj.dje.ornivie ifdcehfacr sucs

    pirluftcs pcrc ue njs njhs sirvhnjris rilhstrcnjs nj njefhj. J _ILHT^_J.O_ fj tir ie

    sius rilhstrjs fifauec hf`jrecj cbe nj fjei njs sirvhnjris NFT i nj njefhj c qui

    sirvie. ^unj j echs `jh nibilcnj. J cnehfhstrcnjr nj njefhj ixiepbj.dje.ortie tjtcb

    bhoirncni pcrc rilhstrcr qucftjs djeputcnjris quhsir niftrj nj njefhj sjori j qucb pjssuh

    cutjrhncni. Ibi pjni hfdbushvi djfthfucr nibilcfnj cutjrhncni pcrc jutrjs suonjefhjs.

    J njefhj ixiepbj.dje.or tie riprisiftcis ie tjncs cs dcphtchs nj Orcshb i dcnc ue

    nissis suonjefhjs si hfhdhc pibj fjei nc dcphtcb jfni ist sinhcnj. J cnehfhstrcnjr njsirvhj NFT nj njefhj rchz pjnir ricbhzcr c nibilcj ni cutjrhncni pcrc js njefhjs

    rilhjfchs, hfdbuhfnj rilhstrjs nj thpj;

    sirlhpi.ixiepbj.dje. HF FT fs.crcdcku.ixiepbj.dje.

    ]irfceoudj.ixiepbj.dje. HF FT fs.ridh`i.ixiepbj.dje.

    dicrc.ixiepbj.dje. HF FT fs.`jrtcbizc.ixiepbj.dje.

    ecrcfacj.ixiepbj.dje. HF FT fs.scjbuhs.ixiepbj.dje.

    pcrc.ixiepbj.dje. HF FT fs.pcrc.ixiepbj.dje.

    ceczjfcs.ixiepbj.dje. HF FT fs.ceczjfcs.ixiepbj.dje.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    39/220

    ?3

    Dcptubj

    3-

    NFT

    J cnehfhstrcnjr nc ocsi ni Crcdcku pjni nibilcr cutjrhncni pcrc js riprisiftcftis

    ie nh`iriftis rilhis nj istcnj ni Tirlhpi. C ristrhj qui j cnehfhstrcnjr nc ocsi

    ni Crcdcku tie cutjrhncni sjori j njefhj crcdcku.ixiepbj.dje.ori pjni drhcr cpifcs

    fjeis ni djeputcnjris qui tirehfie dje issi fjei.

    Tirvhj ie DA_JJ^

    Ie sirvhnjris YFHQ , pjssvib ixidutcr j OHFN ie ue ceohifti darjjt (uscfnj c `ufjdarjjt ()), ispidhdcfnj c jpj - t pcrc fcein. Hssj pjni ckuncr c eibajrcr c silurcfc

    nj shstiec, djbjdcfnj j OHFN ie uec scfnojx, qui vch bhehtcr js ncfjs dcuscnjs si ue

    sirvhnjr `jr djeprjeithnj.

    Jutrj ridursj thb c dcpcdhncni ni ixidutcr j nciejf djej ue usurhj sie prhvhblhjs (-u

    usurhj). Tulirhejs c ixiduj djej ue usurhj sie prhvhblhjs cj uscr j ridursj darjjt.

    Cquh ist ue ixiepbj ni djecfnj pcrc dcrrilcr j OHFN ie uec scfnojx darjjt, fj

    nhritrhj /vcr/fcein, i dje jpj ni situhn pcrc j usurhj ?=?;

    /usr/bjdcb/sohf/fcein -u ?=? -t /vcr/fcein

    ]crc qui ue ceohifti darjjt pjssc `ufdhjfcr djrritceifti ie ue nhritrhj ispiddj (pjr

    ixiepbj,/vcr/fcein), vjd tir ni drhcr ue ceohifti qui hfdbuh tunj j qui j OHFN pridhsc

    pcrc sir ixidutcnj. Nj pjftj ni vhstc nj OHFN, j nhritrhj/vcr/fcein c rchz nj shstiec

    ni crquhvjs. Cj djftrrhj ni virsis cftirhjris nj OHFN, vjd fjrecbeifti fj pridhscr

    djephbcr j OHFN istcthdceifti fie hfstcbcr ohobhjtidcs djepcrthbacncs sjo c fjvc rchz. Fj

    iftcftj, nipifnifnj nj siu Thstiec Jpircdhjfcb, vjd fidisshtcr drhcr cblufs crquhvjs,

    tchs djej/niv/zirj, /niv/rcfnje, /niv/ bjl i /itd/ bjdcbthei.

    NFT dje H]v0

    qDje j nisifvjbvheiftj nj H]v0, surlhu c fidisshncni ni si prjvir ue sirvhj nifjeis qui supjrti issi fjvj prjtjdjbj. @jh drhcnj ue fjvj rilhstrj qui creczifc

    ifnirijs fj `jrectj nj H]v0.

    3 CCCC.

    Ye fjvj njefhj `jh drhcnj pcrc c risjbuj ni rivirsj, nisdrhtj fc _@D 439?.

    3 hp0.crpc.

    Njhs thpjs ni djfsubtcs pjnie sir ricbhzcncs ie ue NFT;

    3 _isjbuj ni fjeis.

    3 _isjbuj ni ifnirij rivirsj.

    Dje j nisifvjbvheiftj nj H]v0, surli c fidisshncni ni si prjvir ue sirv hj ni fjeis quisupjrti issi fjvj prjtjdjbj. ]crc hssj, `jh drhcnj ue fjvj rilhstrj qui creczifc ifnirijs

    fj `jrectj nj H]v0, j CCC C. Istj ie `csi ni nisifvjbvheiftj fjvjs thpjs ni rilhstrjs

    qui `cdhbhtcrj c ecfutifj nissi sirv hj. Cbe nhssj, ue fjvj njefhj `jh drhcnj pcrc c

    risjbuj ni rivirsj, j hp0.crpc, nisdr htj fc _@D 439?.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    40/220

    ??

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    Djej sirvhnjr ni fjeis, pjniejs uthbhzcr j OHFN virsj 8, dukc hepbieiftcj c echs

    rjoustc. Njhs thpjs ni djfsubtcs pjnie sir ricbhzcncs ie ue NFT;

    3 _isjbuj ni fjeis; fcei tj cnnriss bjjgups (`jrwcrn bjjgups)7

    3 _isjbuj ni ifnirij rivirsj; cnnriss tj fcei bjjgups (rivirsi bjjgups).

    _isjbuj ni Fjeis

    ]crc _isjbuj ni Fjeis (`jrwcrn bjjgups), uscnj j thpj CCCC. Js rilhstrjs CCCC sj

    pcrcbibjs i sieibacftis cjs _ilhstrjs C fj H]v> . Ie ue fhdj ifnirij pjssvib ispidh-

    dcr ue ifnirij H] v0 djepbitj. ]jr ixiepbj;

    www.hpv0.or. HF C ?==.30=.>.??

    www.hpv0.or. HF CCCC ?==3;3?``;=;>;;??

    _isjbuj ni ifnirij rivirsj

    ]crc risjbuj ni rivirsj, `jh cnhdhjfcnj j rilhstrj ]^_ hp0.crpc, rispjfsvib pjr trcnuzhr

    ifnirijs H]v0 ie fjeis. Ie suc riprisiftcj, jehthr siqufdhc ni zirjs fj pireh-

    thnj i j oht eifjs shlfhdcthvj djbjdcnj echs isquirnc.

    J crquhvj ni djflurcj fcein.djf`nivi sir inhtcnj i hfdbunc uec fjvc zjfc, c rivirsc,

    prjdinifnj nc siluhfti jrec dje c djflurcj;

    Crquhvj; fcein.djf`

    zjfi =.=.=.=.3.?.`.`.3.=.=.?.hp0.crpc {

    typi ecstir7

    `hbi ?==3;3?``;====.hp0.crpc7

    }7

    ]csscejs, csshe, c rispjfnir pibj rivirsj nj objdj qui jh dinhnj. cb prixj k nivi tir

    shnj nibilcnj pibj prjvinjr ni ifnirijs H]v0 , nc eisec `jrec djej jdjrri fc nibilcj

    ni suonjefhjs.

    C `jrec djej si nidbcrc j rilhstrj rivirsj sieibacfti cj H]v>, ju sikc, djeicfnj pibj

    bthej nlhtj aixcnidhecb nj ifnirij, i nifjehfcnj ni fhoobi `jrect.

    Crquhvj; ?==3;3?;====.hp0.crpc

    $^^B 10>==

    M HF TJC fs.hpv0.or. rjjt.hpv0..or. (

    ?==333??=3

    4A 7 ri`risa

    39E 7 ritry

    3\ 7 ixphry

    3N) 7 ehfheue

    HF FT fs.hpv0.or.

    ?.?.=.=.=.=.=.=.=.=.=.=.=.=.=.=.>.=.=.= HF ]^_ www.hpv0.or.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    41/220

    ?4

    Dcptubj

    3-

    NFT

    NFTTID

    q3 Njechf Fcei Tystie TIDurhty Ixtifshjfs (NFTTID) tie pjr jokithvj cnhdhjfcr echssilurcfc cj shstiec ni risjbuj ni fjeis.

    3 ]cssju c sir ue pcnrj hftirfcdhjfcb qui istifni c tidfjbjlhc NFT, lcrcfthfnj ccutifthdhncni i c hftilrhncni ncs hf`jrecis.

    3 Ythbhzc j eidcfhsej ni drhptjlrcc ni dacvis pobhdcs.3 Drhcnj pcrc sjbudhjfcr cblufs prjobiecs ifdjftrcnjs fj ctucb shstiec ni risjbuj

    ni fjeis.

    3 J jokithvj nc ixtifsj NFTTID cssilurcr j djftinj nj NFT i hepinhr js ctcquis.

    ^ie pjr jokithvj cnhdhjfcr echs silurcfc cj shstiec ni risjbuj ni fjeis, rinuzhfnj j

    rhsdj ni ecfhpubcj ncs hf`jrecis pjr tirdihrjs. ]cssju c sir ue pcnrj hftirfcdhjfcb,

    qui istifni c tidfjbjlhc NFT, lcrcfthfnj c cutifthdhncni i c hftilrhncni ncs hf`jrecis.

    Ythbhzc j eidcfhsej ni drhptjlrcc ni dacvis pobhdcs. @jh dr hcnj pcrc sjbudhjfcr cblufs

    prjobiecs ifdjftrcnjs fj ctucb shstiec ni risjbuj ni fjeis, djej cs cbscs risjbuis

    qui drhce jpjrtufhncnis pcrc cbtircis ni ncnjs ie nhvirsjs thpjs ni trcfscis, djej

    pjr ixiepbj, djeprcs ibitrfhdcs. Fj prjtjdjbj NFT, ue ctcqui jfni c hf`jrecj djr-

    rjephnc ixtrieceifti nh`dhb ni sir nitidtcnj i, fc prthdc, hepjssvib ni sir privifhnj.

    J jokithvj nc ixtifsj NFTTID cssilurcr j djftinj nj NFT i hepinhr issis ctcquis ,

    vcbhncfnj js ncnjs i lcrcfthfnj c jr hlie ncs hf`jrecis.

    3 ]rjv silurcfc pcrc c risjbuj ni ifnirijs73 @ufdhjfc djej ue dcehfaj cbtirfcthvj pcrc c virhdcj ni cutifthdhncni nc hf`jrecj7

    3 Tuc virhdcj jdjrri cftis ni jutrcs cpbhdcis ni silurcfc, tchs djej, ssb, ssa, s`tp,]L] itd7

    3 ]irehti qui si jotifac dje pridhsj j ifnirij H], pjr eihj njs siluhftis sirvhjs;

    ? Cutifthdcj nc jrhlie7? Hftilrhncni njs ncnjs7

    ? ]rjvc ni hfixhstfdhc.

    J shstiec NFTTID pirehti qui si jotifac dje pridhsj j ifnirij H], ctrcvs njs

    siluhftis sirvhjs;

    3 Cutifthdcj nc jrhlie; c hf`jrecj sjeifti pjni sir jrhlhfcnc nj sirvhnjr NFTcutjrhtcthvj nj njefhj7

    3 Hftilrhncni njs ncnjs; c hf`jrecj ridiohnc ixctceifti c eisec `jrfidhnc pibjsirvhnjr NFT cutjrhtcthvj nj njefhj7

    3 ]rjvc ni hfixhstfdhc; fj dcsj ni uec rispjstc filcthvc jrfidhnc pibj sirvhnjr NFT cutj-rhtcthvj nj njefhj, pjniejs djeprjvcr qui issc hf`jrecj ist djrritc. Nipifnifnj nj

    thpj ni ctcqui, hssj pjni sir sudhifti pcrc qui j shstiec NFTTID j hftirrjepc7

    3 ]crc qui issis sirv hjs pjssce sir cthvcnjs, j NFTTID fidisshtc qui tjncs cs sjbhdhtc-is sikce csshfcncs nhlhtcbeifti7

    3 Fjvjs _ilhstrjs ni _idursjs pcssce c sir drhcnjs nurcfti j prjdissj ni csshfcturc nhlhtcb;

    ? NFTGIX7

    ? __THL7

    ? Nibilcthf Thlfir (NT)7

    ? FTID.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    42/220

    ?>

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    ]crc qui issis sirv hjs pjssce sir cthvcnjs, j NFTTID fidisshtc qui tjncs cs sjbhdhtcis

    sikce csshfcncs nhlhtcbeifti, uscfnj uec ju echs dacvis prhvcncs i ue cbljrhtej cssh-

    etrhdj ni drhptjlrcc. Fjvjs _ilhstrjs ni _idursjs (__s) pcssce c sir drhcnjs nurcfti j

    prjdissj ni csshfcturc nhlhtcb, uscfnj j uthbhtrhj nfssid-shlfzjfi.

    3 NFTGIX; creczifc cs dacvis pobhdcs uthbhzcncs pcrc c csshfcturc nj njefhj7

    3 __THL; creczifc cs dacvis prhvcncs ut hbhzcncs pcrc c csshfcturc njs _rsit7

    3 Nibilcthjf Thlfir (NT); pjftihrj pcrc c prxhec dcnihc ni djfcfc7

    3 Fixt Tiduri (FTID); pirehti cutifthdcr uec rispjstc filcthvc.

    NFTGIX

    ue _isjurdi _idjrn qui creczifc c dacvi pobhdc nc zjfc ni cutjrhncni.

    ixiepbj.dje. 8== HF NFTGIX ?90 4 9 (

    CwICCi[]F?yEs8q0glXk@YobIwkDf\\d]q+^LdKrN9lc

    QQCo]9ECqHgl[9K>^Y3eepB3C1lE`n/wYeOgPhpQ_1@G

    A_ckO[T_`liGfGcStrxF[4?Ddts?@0Xbv8\cBQthqiol

    J[tuK@pSr0pfHt/@jJH+HkQu/q^reE/ ) 7 giy hn 5 0?9

    __THL

    ue _isjudi _idjrn qui djfte c csshfcturc ni ue __sit (djfkuftj ni __ dje j eisej

    fjei ni njefhj, dbcssi i thpj) ispiddj ni uec nitirehfcnc dacvi NFTGIX. ]jssuh uec

    vcbhncni hfhdhcb i fcb.

    ixiepbj.dje. 8== HF __THL TJC 9 4 8== ?==

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    43/220

    ?9

    Dcptubj

    3-

    NFT

    njechf; rfp.or

    jwfir; Cssjdhcj _ini Fcdhjfcb ni Ifshfj i ]isquhsc

    jwfirhn; ==4.9=1.=84.384.4 ?==3;3?`=;4i;3=?;;4

    fsstct; ?=3?=?30 CC

    fsbcstcc; ?=3?=?30

    fsirvir; buc.fc-n`.rfp.or ?==.34=. _TC/TAC-3 >IN8@DD04D88I9?I?@D>8?93

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    44/220

    ?0

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    J djecfnj vch lircr ue fjvj crquhvj ni zjfc dje c ixtifsj .shlfin. J pirjnj ni vcbh-

    ncni ncs dacvis ni 4= nhcs i cs dacvis nivirj sir rivcbhncncs cftis ni suc ixphrcj.

    ]crc hssj, cbtiri j sirhcb fj rilhstrj TJC i riphtc j prjdissj.

    4. Ctucbhzcr j crquhvj fcein.djf`pcrc ri`irifdhcr j fjvj crquhvj ni zjfc.

    zjfi ixiepbj.dje{

    typi ecstir7

    `hbi no.ixiepbj.dje.or.shlfin7

    }7

    >. _ihfhdhcr j Ohfn.

    9. Cnhdhjfcr j NT fj shti nj rilhstrj.or.

    $ dct nssit-ixiepbj.dje | aicn -3

    ixiepbj.dje. HF NT 13< 9 3 ICID?8I>O=891N>N4N@N8=DD

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    45/220

    ? nj F@T.

    jokithvjs

    djfdihtjs

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    48/220

    4=

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    Hfstcbcfnj i djf`hlurcfnj ue sirvhnjr F@T

    q]cdjtis ni hfstcbcj;3 f`s-girfib-sirvir.

    3 f`s-djeeje.

    ? pjrtecp.

    Crquhvjs ni djflurcj;

    3 /itd/ixpjrts.

    3 /itd/ajsts.cbbjw.

    3 /itd/ajsts.nify.

    ]crc djflurcr ue sirvhnjr F@T, fidissrhj `czir c djflurcj nj sirvhj F@T, pjr eihj

    ni sius crquhvjs ni djflurcj, i nhspcrcr c ixiduj nj sirvhj.

    Ixirddhj ni hxcj 3iHfstcbi j sirvhnjr F@T

    Hfstcbi j sir vhj F@T fj sir vhnjr 38?.301.Q.3. ]crc hssj, fidissrhj qui istikce hfstcbcnjs

    trs pcdjtis; f`s-girfib-sirvir,f`s-djeejf ipjrtecp.

    Crquhvj /itd/ixpjrts

    qBhstc iftrcncs, dje dcnc uec hfnhdcfnj ue vjbuei djepcrthbacnj.3 nhridtjry ecdahfi3 (jpthjf33, jpthjf3?).

    3 ecdahfi? (jpthjf?3, jpthjf??).

    3 Jpis;

    ? rj

    ? rw? fjZrjjtZsqucsa

    ? fjZsuotriiZdaidg

    ? syfd

    J crquhvj/itd/ixpjrts djfte uec bhstc ni iftrcncs, jfni dcnc iftrcnc hfnhdc ue vjbuei

    djepcrthbacnj i djej dcnc ue ist djepcrt hbacnj. Yec iftrcnc nissi crquhvj shehbcr c;

    nhridtjry ecdahfi3(jpthjf33,jpthjf3?) ecdahfi?(jpthjf?3,jpthjf??)

    Jfni;

    3 nhridtjry;hfnhdc j nhritrhj qui si nisikc djepcrthbacr i pjni sir ue vjbuei hftihrj.Cj djepcrthbacr ue nhritrhj, tjnjs js nhritrhjs c siluhr nibi fj eisej shstiec ni

    crquhvjs tceoe sirj djepcrthbacnjs7

    3 ecdahfi3 i ecdahfi?;equhfcs dbhiftis qui tirj cdissj cj nhritrhj ispidhdcnj ienhridtjry. Cs equhfcs pjnie sir bhstcncs uscfnj ifnirijs H] ju fjeis (pjr ixiepbj,

    ecdahfi.djepcfy.dje ju 38?.301.=.1). Yscr ifnirijs H] echs djfvib i echs silurj7

    3 jpthjfQQ;bhstc ni jpis pcrc dcnc equhfc, qui nisdrivir j thpj ni cdissj qui cequhfc tir. Cbluecs jpis hepjrtcftis sirj ixcehfcncs c siluhr.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    49/220

    43

    Dcptubj

    ?-

    F@T

    Jpis nj crquhvj/itd/ixpjrts ;

    3 rj; nhritrhj djepcrthbacnj cpifcs pcrc bihturc7 c equhfc dbhifti fj sir dcpcz niisdrivir. Issc c jpj ni`cubt7

    3 rw ; c equhfc dbhifti tir cdissj ni bihturc i isdrhtc cj nhritrhj7

    3 fjZrjjtZsqucsa; pjr ni`cubt, qucbquir pinhnj `ihtj pibj supirusurhj fc equhfcdbhifti trctcnj djej si `jssi `ihtj pibj usurhj fjojny fj sirvhnjr. Ti fjZrjjtZsqucsa

    `jr sibidhjfcnj, iftj j supirusurhj fc equhfc dbhifti tir j eisej fvib ni cdissj

    cjs crquhvjs fj shstiec djej supirusurhj fj sirvhnjr, j qui pjni tir sr hcs hepbhdc-

    is ni silurcfc, ecs pjni sir fidissrhj si quhsirejs ixidutcr trcocbajs cnehfhs-

    trcthvjs fc equhfc dbhifti qui ifvjbvce nhritrhjs ixpjrtcnjs7

    3 fjZsuotriiZdaidg; si cpifcs uec pcrti nj vjbuei ixpjrtcnc, uec rjthfc dacecncsuotrii daidghfl virhdc si ue ncnj crquhvj riquhshtcnj nj dbhifti ist fc pcrti cni-

    qucnc nj vjbuei. Ti j vjbuei hftihrj `jr ixpjrtcnj, niscohbhtcr issc jpj cueiftcr c

    vibjdhncni ni trcfs`irfdhcs7

    3 syfd; pjr ni`cubt, js djecfnjs ixpjrt`susce j djepjrtceiftj csyfd, hfnhdcfnjpcrc c equhfc dbhifti qui ue prjdissj ni isdrhtc ie ue ncnj crquhvj ist djepbitj

    qucfnj j F@T fcbhzcr c isdrhtc fj shstiec ni crquhvjs. Issi djepjrtceiftj pjni

    dcuscr djrrupj fjs ncnjs, ie dcsj ni rihfhdhcbhzcj nj sirvhnjr, j qui pjni sir

    privifhnj pibc jpj syfd.

    qYe ixiepbj;3 /usr/bjdcb 38?.301.=.3 (rj) 38?.301.=.? (rj)

    3 /ajei 38?.301.=.3 (rw) 38?.301.=.? (rw)

    Jutrj ixiepbj;

    3 /usr/bjdcb 38?.301.=.=/?99.?99.?99.= (rj)

    3 /ajei 38?.301.=.=/?99.?99.?99.= (rw)

    ]crc uscr fitlrjups FHT, ocstc cfixcr j fjei nj fitlrjup dje ue dcrcdtiri M.

    Tupjfac qui tiejs nucs equhfcs dbhiftis, sbcvi3 i sbcvi?, qui te ifnirijs H]

    38?.301.=.3 i 38?.301.=.?, rispidthvceifti, i qui quiriejs djepcrthbacr ohfrhjs i cblufs

    nhritrhjs dje isscs equhfcs. Yec djflurcj tphdc pcrc/itd/ixpjrts pjni sir;

    /usr/bjdcb 38?.301.=.3 (rj) 38?.301.=.? (rj)

    /ajei 38?.301.=.3 (rw) 38?.301.=.? (rw)

    Tifnj csshe, a ue djepcrthbaceiftj ricn-jfby pcrc sbcvi3 i sbcvi?, pjrqui ibis nivie

    prjvcvibeifti djftir js ohfrhjs. ]jr jutrj bcnj, cblufs nhritrhjs fidisshtce sir ixpjr-

    tcnjs ricn-wrhti, si js usurhjs quhsirie i`itucr isdrhtcs sjori ibis.

    Cj si trctcr dje uec rini ni lrcfni pjrti, prheihrj pjniejs cdisscr uec lrcfni `chxc ni

    equhfcs ispidhdcfnj uec rini i uec esdcrc. ]jr ixiepbj, si quhsir pirehthr j cdissj

    pcrc tjncs cs equhfcs dje ifnirijs H] iftri 38?.301.=.= i 38?.301.=.?99, iftj pjniejs

    tir cs siluhftis iftrcncs;

    /usr/bjdcb 38?.301.=.=/?99.?99.?99.= (rj)

    /ajei 38?.301.=.=/?99.?99.?99.= (rw)

    ]crc ispidhdcr ue fitlrjup FHT fj siu crquhvj ixpjrts, shepbiseifti cfixi j fjei nj

    fitlrjup dje ue dcrcdtiri M.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    50/220

    4?

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    Jutrj `jrectj qui pjni sir uthbhzcnj, ie viz ni ajstfceis, cblj nj thpj *.`jj.dje ju 38?.301.

    Cbluecs pridcuis nivie sir tjecncs ie ribcj cj qui pjni i j qui fj pjni sir

    ixpjrtcnj. ]rheihrj, si ue nhritrhj ixpjrtcnj, sius nhritrhjs pch i baj fj pjnie sir

    ixpjrtcnjs si ibis isthvirie fj eisej shstiec ni crquhvjs. ]jre, c ixpjrtcj ni ceojs

    js nhritrhjs pjni fj sir fidissrhc, uec viz qui bhstcr j nhritrhj pch fj crquhvj /itd/ixpjrts

    `cr dje qui tjnjs js nhritrhjs sikce ixpjrtcnjs, niftrj nj shstiec ni crquhvj.

    Crquhvjs /itd/ajsts.cbbjw i /itd/ajsts.nify

    q3 Ispidhdce js ajsts qui pjnie uscr sirvhjs ie uec ncnc equhfc.3 ajsts.cbbjw cfcbhscnj cftis nj sirv hnjr rispjfnir c ue pinhnj.

    3 Ti c equhfc fj si cssjdhc c uec iftrcnc ie ajsts.cbbjw, j sirvhnjr iftj virhdcajsts.nify.

    Issis njhs crquhvjs sj uthbhzcnjs pcrc djftrjbcr j cdissj cjs sirvhjs ^D] nj siu djepu-

    tcnjr, ispidhdcfnj cs equhfcs qui, fc rini, pjnie ju fj uscr issis sirvhjs. Dcnc

    bhfac njs crquhvjs djepjstc pibj fjei nj sirvhj i ni uec bhstc ni equhfcs, qui

    pjnie (cbbjw) ju fj pjnie (nify) uscr j sirvhj. Cj ridioir uec sjbhdhtcj ni uec

    equhfc qucbquir, j sirv hnjr `cz j siluhfti;

    3 ]rheihrj, virhdc fj crquhvj ajsts.cbbjwsi c equhfc ist hfdbunc fibi. Ti isthvir, siucdissj istcr pirehthnj7

    3 Dcsj djftrrhj, j sirvhnjr virhdc fj crquhvj ajsts.nifysi c equhfc ist hfdbunc fibi7si isthvir, j cdissj filcnj7

    3 Ti c equhfc fj isthvir ie fifaue njs njhs crquhvjs, j cdissj tceoe pirehthnj.

    Cbe ni djftrjbcr js sirvhjs hfitn, tchs djej tibfit i @^], issis crquhvjs tceoe pjnie

    sir uthbhzcnjs pcrc ristrhflhr c djfixj cjs nciejfs ifvjbvhnjs fj sirvhj F@T. J prheihrj

    nciejf c tir siu cdissj ristrhflhnj j pjrtecppir, qui tie djej `ufj hf`jrecr c pjrtc

    ie qui dcnc sirvhj rispjfni. _istrhflhr j cdissj cj pjrtecppir c eibajr ni`isc djftrc

    qucbquir ue qui quihrc hfvcnhr j siu shstiec c pcrthr nj F@T, pjrqui usurhjs fj cutjrh-

    zcnjs fj pjnirj ifdjftrcr js nciejfs F@T. jncvhc, a njhs pjftjs c djfshnircr;

    3 _istrhflhr j cdissj cj pjrtecppir fj sudhifti si cblue hftrusj k sjuoir, pjrcbluec rczj, djej ifdjftrcr tjnjs js nciejfs7

    3 Ti j Fitwjrg Hf`jrecthjf Tirvhdi (FHT) ist sifnj ixidutcnj, ristrhflhr pjrtecppirtceoe ristrhflhr pinhnjs cj FHT. Ie lircb, tceoe cdjfsibavib filcr cdissj c

    ifnirijs H] cjs quchs fj sikc pridhsj pirehthr cdissj ixpbhdhtceifti. J prheihrj pcssj

    pcrc `czir hssj cnhdhjfcr c siluhfti iftrcnc cj crquhvj/itd/ajsts.nify;

    pjrtecp;CBB

    Cnhdhjfi iftrcncs pcrc dcnc ue njs nciejfs F@T;

    3 bjdgn;CBB

    3 ejuftn;CBB

    3 rqujtcn;CBB

    3 stctn;CBB

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    51/220

    44

    Dcptubj

    ?-

    F@T

    _istrhflhr cdissj c pjrtecppir c eibajr ni`isc djftrc ctcquis c F@T.

    3 ajsts.nify;

    ? pjrtecp;CBB, bjdgn;CBB, ejuftn;CBB, rqujtcn;CBB, stctn;CBB

    3 ajsts.cbbjw.

    ? sirvhdi; ajst Wju fitwjrg/fitecsgU, ajst Wju fitwjrg/fitecsgU

    Cblufs cnehfhstrcnjris ni shstiecs pri`irie djbjdcr c iftrcnc CBB;CBB fj crquhvj/itd/ajsts.nify, `czifnj dje qui j cdissj sikc filcnj c tjnjs js ajsts, c eifjs qui sikc

    ixpbhdhtceifti pirehthnj. Nipjhs, fidissrhj cnhdhjfcr uec iftrcnc cj ajsts.cbbjwpcrc

    qui j cdissj cjs ajsts sikc acohbhtcnj. Cs iftrcncs ie ajsts.cbbjwsiluie j `jrectj;

    sirvhdi; ajst Wju fitwjrg/fitecsgU, ajst Wju fitwjrg/fitecsgU

    Jfni ajst j ifnirij H] ni ue dbhifti i pjni sir pjssvib, ie cbluecs virsis, uscr j

    fjei NFT nj ajst, ieojrc fj sikc cdjfsibavib. Tupjfac qui nisikcejs pirehthr cdissj

    c sbcvi3.`jj.djei sbcvi?.`jj.djei qui js ifnirijs H] nisscs equhfcs sikce 38?.301.=.3 i

    38?.301.=.?, rispidthvceifti. ^ircejs, pjrtcftj, cs siluhftis iftrcncs pcrc/itd/ajsts.cbbjw;

    pjrtecp; 38?.301.=.3, 38?.301.=.?

    ]crc virsis ridiftis nj f`s-uthbs, pjniejs cnhdhjfcr;

    bjdgn; 38?.301.=.3, 38?.301.=.?

    rqujtcn; 38?.301.=.3, 38?.301.=.?

    ejuftn; 38?.301.=.3, 38?.301.=.?

    stctn; 38?.301.=.3, 38?.301.=.?

    Hfhdhcfnj js sirvhjs F@T

    q]r-riquhshtjs;3 Pirsj nj girfib qui supjrti F@T i virsj cniqucnc ni f`s-uthbs.

    Hfhdhcfnj jpjrtecppir.

    3 Bjdcbhzcnj ie/sohfi, cbluecs vizis, ie/usr/sohf.

    ]r-riquhshtjs

    J sirvhnjr F@T nivi sir djflurcnj. ]rheihrj, pridhsj tir js pcdjtis cprjprhcnjs hfstc-

    bcnjs. Hssj djfshsti prhfdhpcbeifti ie uec virsj ni girfib qui supjrti F@T i uec virsj

    cniqucnc nj pcdjti f`s-uthbs.

    Ie siluhnc, cftis ni hfhdhcr j F@T, virhqui si c rini ^D]/H] ist `ufdhjfcfnj djrritc-

    eifti fc suc equhfc. @ihtj hssj, k pjssvib hfhdhcr j F@T i ixidut- bj cps riojjt ncequhfc, pjhs js sdrhpts ni hfhdhcbhzcj k nitidtce qui j crquhvj/itd/ixpjr ts`jh djflu-

    rcnj i hfhdhcbhzcr j F@T. Ti fj `ufdhjfcr djrritceifti, cblufs nciejfs pridhscrj sir

    hfhdhcbhzcnjs pcrc ixidutcr js sirvhjs F@T.

    Hfhdhcfnj j pjrtecppir

    F@T nipifni nj nciejf pjrtecppir, tceoe dacecnj pjrtecp ju rpd.pjrtecp. Ibi

    nivi istcr bjdcbhzcnj ie/sohfi, cbluecs vizis, ie/usr/sohf. Nhstrhouhis echs ridiftis

    nj Bhfux hfhdhcbhzce issi nciejf fj prjdissj ni ojjt7 ni qucbquir ejnj, hepjrtcfti tir

    dirtizc ni qui ibi ist ixidutcfnj cftis ni trcocbacr dje j F@T. Nhlhti;

    ps cux | lrip pjrtecp

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    52/220

    4>

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    Nciejfs nj pcdjti f`s-uthbs.

    3 rpd.f`sn;nciejf nj F@T qui `cz c echjr pcrti nj trcocbaj.

    3 rpd.bjdgn i rpd.stctn;djftrjbce js cdissjs ni bihturc i lrcvcj ni crquhvjs.

    3 rpd.ejuftn;ecfhpubc js pinhnjs hfhdhchs ni ejftclie ni bi systies.

    3 rpd.rqujtcn;lirfdhc cs qujtcs ni nhsdj njs usurhjs ie vjbueis ixpjrtcnjs.

    Bjdgn dacecnj pibj f`sn sjo niecfnc, pjrtcftj fj si prijdupi ie hfhdh-bj. Ttctnpridhsc sir hfhdhcnj sipcrcnceifti. Nhstrhouhis Bhfux echs ridiftis te sdrhpts ni hfhdhcbh-

    zcj pcrc issis nciejfs.

    Js nciejfs dhtcnjs sj pcrti nj pcdjti f`s-uthbs i pjnie istcr fjs nhritrhjs /sohfju

    /usr/sohf. Ti c nhstrhouhj ie usj fj hfdbu-bjs fjs sdrhpts ni hfhdhcbhzcj, iftj

    niviejs cnhdhjf-bjs i ixidutcr djflurcj pcrc qui hfhdhie fc siluhfti jrnie;

    3. rpd.pjrtecp

    ?. rpd.ejuftn

    4. rpd.f`sn, rpd.stctn

    >. rpd.bjdgn (si fidissrhj)

    9. rpd.rqujtcn

    Pirh`hdcfnj c ixiduj nj F@T

    q3 Djfsubti j pjrtecppir dje j djecfnj rpdhf`j -p.3 Ti pjrtcecppir, f`s i ejuftn fj isthvirie bhstcnjs, ritjrfi i tifti fjvceifti

    hfhdhcbhzcr js nciejfs.

    3 C scnc cblj djej;

    prjlrce virs prjtj pjrt

    3===== ? tdp 333 pjrtecppir

    3===== ? unp 333 pjrtecppir

    ...

    ]crc czir hssj, djfsubti j pjrtecppir dje j djecfnj rpdhf`j -ppcrc virhdcr js sirvhjs

    qui istj ixidutcfnj. C scnc cblj djej;

    prjlrce vir prjtj pjrt prjlrce vir prjtj pjrt

    3===== ? tdp 333 pjrtecppir 3====4 4 unp ?=>8 f`s

    3===== ? unp 333 pjrtecppir 3===?> 3 unp 8>> stctus

    3===33 3 unp 8 rqujtcn 3===?> 3 tdp 8>0 stctus3===33 ? unp 8 rqujtcn 4===38 3 tdp 14= cen

    3====9 3 unp

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    53/220

    49

    Dcptubj

    ?-

    F@T

    Issc scnc hfnhdc qui cs virsis ? i 4 nj F@T, c virsj 3 nj rpd.stctni cs virsis 3, 4 i

    > nj rpd.bjdgnistj `ufdhjfcfnj. A tceoe jutrjs sirvhjs bhstcnjs, nipifnifnj nj

    F@T istcr sjori ^D] ju YN]. J Bhfux usc YN] pjr ni`cubt, c eifjs qui ^D] sikc ixpbhdhtc-

    eifti riquhshtcnj.

    Ti fj isthvirie bhstcnjs js sirvhjs pjrtecppir, f`s i ejuftn, iftj fidissrhj

    ritjrfcr i hfhdhcbhzcr fjvceifti js nciejfs.

    Djf`hlurcj ni dbhifti F@T

    qEjftclie ni nhritrhjs riejtjs;3 Dbhifti F@T nivi ixidutcr j pjrtecppir.

    3 Fj dbhifti i fj sirv hnjr sj fidissrhjs js nciejfs;

    ? rpd.stctn.

    ? rpd.bjdgn.

    Ixiepbj;

    # ejuft ecstir.`jj.dje;/ajei /eft/ajei

    Cftis ni djeicr, nivi-si tir dirtizc ni qui j dbhifti tie supjrti pcrc ejftclie F@T.

    Ti isthvir sifnj uscnj j girfib dje j shstiec ni crquhvjs /prjd, pjssvib virhdcr j

    crquhvj/prjd/bisystiesi tir dirtizc ni qui a uec bhfac djftifnj F@T. Ti fj, nhlhti

    hfsejn f`spcrc tir dirtizc ni qui j F@T `jh djephbcnj djej ue enubj7 dcsj djf -

    trrhj, fidissrhj djfstruhr ju `czir njwfbjcn ni ue girfib dje supjrti pcrc F@T.

    ]crc uscr uec equhfc djej dbhifti F@T fidissrhj qui jpjrtecppir istikc rjncfnj

    fibc. ]crc uscr j djftrjbi ni cdissj ni crquhvjs F@T, sir fidissrhj tceoe qui rpd.stctn

    i rpd.bjdgnistikce rjncfnj fj dbhifti i fj sirvhnjr. Nhstrhouhis echs ridiftis hfhdhce

    issis sirvhjs pjr ni`cubt, ie tiepj ni ojjt.

    Djepjrtecp, bjdgni stctnixidutcfnj, j cnehfhstrcnjr nivi sir dcpcz ni ejftcr j

    nhritrhj riejtj ni siu sirvhnjr nc eisec `jrec qui ejftcnj ue nhsdj bjdcb, dje j

    djecfnj ejuft. Tupjfac qui ue ncnj sirvhnjr dacecnj ecstir.`jj.djei qui quiriejs

    ejftcr j nhritrhj/ajei iesbcvi3.`jj.dje. Ocstc nhlhtcr;

    # ejuft ecstir.`jj.dje;/ajei /eft/ajei

    J nhritrhj/ajeiie ecstircpcridir djej nhritrhj/eft/ajeiie sbcvi 3(nj bthej ixiepbj).

    Ejftclie ie tiepj ni ojjt; j thpj ni shstiec ni crquhvjs te ni sir F@T, i nuepi`sdg

    nivie tir vcbjr zirj.

    Ejnjs ni `cbac;

    3 Tj`t;

    ? Ti ue crquhvj `cbac, j dbhifti F@T ripjrtcr irrj7

    ? ]jni dcuscr djrrupj ni crquhvjs i pirnc ni ncnjs7

    ? Fj si ridjeifnc issi thpj ni djflurcj.

    3 Acrn;

    ? Sucfnj j sirvhnjr F@T vjbtcr cj istcnj jf-bhfi, j prjlrcec djfthfucr nj pjftj iequi pcrju7

    ? _idjeifnc-si issi thpj ni djflurcj.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    54/220

    40

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    Ejftclie ni shstiecs ni crquhvjs F@T ie tiepj ni ojjt

    Thstiecs ni crquhvjs F@T pjnie sir cnhdhjfcnjs fj crquhvj/itd/` stconc eisec ecfihrc

    qui js shstiecs ni crquhvjs bjdchs. C fhdc nh`irifc qui j thpj ni shstiec ni crquhvjs

    sir djflurcnj pcrc F@T, i nuep i `sdg tirj ni sir ckustcnjs pcrc zirj. Iftj, pcrc j

    ixiepbj, c iftrcnc fj/itd/` stcosirhc;

    # nivhdi ejuftpjhft `s-typi jpthjfs nuep `sdg

    ...

    ecstir.`jj.dje;/ajei /eft f`s rw = =

    ...

    Ti isthvir sifnj uscnj ue cutjejuftir djej cen ju cutj`s, cs jpis fjs dcepjs djr-

    rispjfniftis ncs bhstclifs nj ejuft sirhce shehbcris, si fj hnfthdcs.

    Jpis ni ejftclie

    A vrhcs jpis c djfshnircr ie ribcj jrec pibc qucb j dbhifti F@T ecfhpubc uec

    `cbac (drcsa) fj sirvhnjr ju quinc nc rini. Ixhstie njhs ejnjs ni `cbac nhsthftjs;

    3 Tj`t; si ue crquhvj `cbac, j dbhifti F@T ripjrtcr ue irrj pcrc j prjdissj fc equhfcdbhifti riquhshtcfnj j cdissj cj crquhvj. Fj si ridjeifnc issi thpj ni djflurcj,

    pjrqui pjni dcuscr djrrupj ni crquhvjs i pirnc ni ncnjs7

    3 Acrn; j prjdissj fj pjni sir hftirrjephnj ju ifdirrcnj, c eifjs qui hssj sikc ispi-dhdcnj, cps uec quinc fj sirvhnjr. Sucfnj j sirvhnjr F@T vjbtcr cj istcnj jf-bhfi, j

    prjlrcec djfthfucr nj pjftj ie qui pcrju. _idjeifnc-si j usj nissc djflurcj.

    Djfshnircfnj j ixiepbj cftirhjr, c iftrcnc stco sirhc;

    # nivhdi ejuftpjhft `s-typi jpthjfs nuep `sdg

    ...

    ecstir.`jj.dje;/ajei /eft/ajei f`s rw,acrn,hftr = =...

    ^cecfaj nj objdj; rshzi i wshzi ispidhdce j tcecfaj.

    3 Fj a ue tcecfaj qui `ufdhjfi oie ie tjnjs ju fc echjrhc njs situps.

    3 Isdjbair ue tcecfaj ni objdj djrritj ue `ctjr hepjrtcfti pcrc j nisiepifaj.

    F@T sjori ^D]

    qPcftclifs;3 @ufdhjfc eibajr qui YN] ie nitirehfcncs rinis.

    3 Eibajr nisiepifaj.3 Ecfhpubc eibajr cs nh`irifcs ni vibjdhncni ni rini.

    Nisvcftclie;

    3 Fj ue prjtjdjbj stctibiss djej j YN].

    J jviraicn lircnj pibj prjtjdjbj ^D] risubtcr ie eifjr pir `jrecfdi nj qui YN]

    sjori djfnhis hnichs ni rini.

    J usj ni ^D] tie uec vcftclie i uec nisvcftclie ie ribcj uthbhzcj ni ^D] sjori YN].

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    55/220

    4 8>/3?/?1 3?;?=

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    59/220

    >3

    Dcptubj

    4-

    TirvhnjrBNC]

    4Tirvhnjr BNC]

    Iftifnir j `ufdhjfceiftj nj sirvhj ni nhritrhj, nj prjtjdjbj BNC] i nc sjbuj

    JpifBNC]7 djepriifnir j `ufdhjfceiftj, jokitjs i ctrhoutjs7 Hfstcbcj nj

    JpifBNC]7 Ixiduj nj sirvhnjr7 Drhcj i ecfutifj nc ocsi ni ncnjs.

    Tirvhnjr BNC], rvjri ni hf`jrecj nj nhritrhj (NH^), nitcbais nc rvjri ni

    djflurcj i `irrceiftcs pcrc ehlrcj nc ocsi.

    Hftrjnuj

    qTirvhjs ni Nhritrhj3 ]rjtjdjbj BNC];

    ? @ufdhjfceiftj? Istruturc nc Ocsi

    ? @jrectj BNH@

    ? @jrecs ni djfixj

    Fisti dcptubj, vcejs djfaidirejs js djfdihtjs ni sirvhj ni nhritrhj i j prjtjdjbj

    Bhlatwihlat Nhridtjry Cddiss ]rjtjdjb (BNC]), cbe nc sjbuj JpifBNC], ie cspidtjs

    ribcdhjfcnjs hfstcbcj, djflurcj i tistis.

    Fc prheihrc pcrti, cojrncriejs j ufdhjfceiftj, jokitjs i ctrhoutjs nj prjtjdjbj BNC],

    ie siluhnc viriejs djej ist jrlcfhzcnc c rvjri ni djflurcj fj `jrectj df5djfl i

    pjr e cprisiftcriejs uec `jrec ni hepjrtcr cs djftcs nj shstiec pcrc c ocsi nj BNC].C ixiduj nj sirv hnjr, oie djej c drhcj nc ocsi, sirj js jokitjs fchs nisti dcptubj,

    jfni sirj djbjdcnjs ie prthdc js djfdihtjs cnquhrhnjs.

    Tirvhjs ni nhritrhj

    qJ qui ue sirvhj ni nhritrhj:Tirvhj ni nhritrhj Q TLONs trcnhdhjfchs

    NH^ (Nhridtjry Hf`jrecthjf ^rii)

    jokithvjs

    djfdihtjs

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    60/220

    >?

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    uec ocsi ni ncnjs ispidhcbeifti nisifvjbvhnc pcrc creczifcr hf`jrecis qui fidis-

    shtce ni ue lrcfni vjbuei ni djfsubtcs, ju sikc, jpircis ni bihturc i isdrhtc fj sj

    prhjrhncni fissi thpj ni ocsi.

    Nh`iriftieifti njs sirvhjs ni ocfdjs ni ncnjs trcnhdhjfchs qui creczifce sucs hf`jrec-

    is ie tcoibcs, ue sirvhj ni nhritrhj creczifc sucs hf`jrecis ni `jrec ahirrquhdc.

    Issc jrlcfhzcj dacecnc ni Nhridtjry Hf`jrecthjf ^rii (NH^) ju rvjri ni Hf`jrecj

    nj Nhritrhj. Cprisiftcriejs echs nitcbais sjori uec NH^ fj nidjrrir nisti dcptubj.

    Lircbeifti uthbhzcejs ue sirvhj ni nhritrhj pcrc creczifcr hf`jrecis sjori js

    ridursjs i js usurhjs ni uec rini ni djeputcnjris. Tuc prhfdhpcb vcftclie diftrcbhzcr

    tjncs cs hf`jrecis ie ue fhdj bulcr, cdhbhtcfnj csshe j trcocbaj njs cnehfhstrcnjris

    ni shstiecs.

    Tie sirvhj ni nhritrhjs

    qNh`iriftis cpbhdcis uthbhzce ocsis ni ncnjs nhsthftcsSucfnj fj pjssuejs ue sirvhj ni nhritrhjs nhspjfvib fc rini, dcnc cpbhdcj nivi

    ecftir suc prprhc ocsi ni ncnjs pcrc cutifthdcj njs dbhiftis. Djfsiquiftieifti, dcncocsi tir suc prprhc pjbthdc ni silurcfc, pjsshohbhtcfnj qui j usurhj tifac uec sifac

    nh`irifti ie dcnc sirvhj.

    Issi difrhj tirrvib pcrc js cnehfhstrcnjris ni shstiecs, pjhs c dcnc hfdbusj, cbtircj

    ju ixdbusj ni ue usurhj, sir fidissrhc c ripithj njs prjdinheiftjs ie tjncs cs

    ocsis ni ncnjs ni tjnjs js shstiecs nhspjfvihs. Hssj rinuzhr c prjnuthvhncni nc iquhpi,

    cbe ni pjsshohbhtcr oridacs ni silurcfc cj ecftir usurhjs dje cdissj c nitirehfcnjs

    sirvhjs ct qui j prjdissj tifac shnj ricbhzcnj ie tjncs cs ocsis ni ncnjs.

    Dbhifti nc cpbhdcj 3

    Dbhifti nc cpbhdcj ?

    Dbhifti nc cpbhdcj 4

    Cpbhdcj 3 _ilhstrj ni usurhj

    _ilhstrj ni usurhj

    _ilhstrj ni usurhj

    Cpbhdcj ?

    Cpbhdcj 4

    Dje sirvhj ni nhritrhj

    qNh`iriftis cpbhdcis uthbhzce c eisec ocsi ni ncnjsYe sirvhj ni nhritrhj `ufnceiftcb pcrc istruturcs ni shstiecs nhstrhounjs. C diftrcbh-

    zcj ncs djftcs njs usurhjs ie ue fhdj bjdcb `cdhbhtc euhtj c vhncs njs cnehfhstrcnjris

    ni shstiecs i pirehti qui js usurhjs cdissie js sirvhjs ni ecfihrc echs trcfspcrifti.

    Sucbquir jpircj ie ue jokitj nj sirvhj ni nhritrhjs sir ixidutcnc uec fhdc viz ie ue

    fhdj bulcr, i tjnjs js shstiecs tirj cdissj js ncnjs heinhctceifti. Issis ncnjs pjnie sir

    cdisscnjs pjr qucbquir cpbhdcj ju shstiec qui supjrtie djeufhdcj pcnrj BNC].

    @hlurc 4.3

    Cpbhdcis

    cdisscfnj ocsis

    ni ncnjs nhsthftcs

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    61/220

    >4

    Dcptubj

    4-

    TirvhnjrBNC]

    Dbhifti nc cpbhdcj 3

    Dbhifti nc cpbhdcj ?

    Dbhifti nc cpbhdcj 4

    Cpbhdcj 3

    BNC]

    BNC]

    BNC]

    _ilhstrj ni usurhjCpbhdcj ?

    Cpbhdcj 4

    BNC]

    q3 ]rjtjdjbj ocsicnj fj cdissj c sirvhjs ni nhritrhj Q.9==

    3 Ixidutc sjori prjtjdjbjs ni trcfspjrti jrhiftcnjs c djfixj

    3 Nitirehfc j djfkuftj ni rilrcs qui djftrjbce j `ufdhjfceiftj nj sirvhj ni nhritrhj

    ue prjtjdjbj dbhifti/sirvhnjr uthbhzcnj pcrc cdisscr sirvhjs ni nhritrhj ocsicnjs ie Q.9==.

    J BNC] `jh nisifvjbvhnj fc Yfhvirshncni nj Ehdahlcf djej uec cbtirfcthvc cj prjtjdjbj NC].

    J prjtjdjbj NC] irc ocsicnj fj pcnrj JTH ni siti dcecncs, j qui j tjrfcvc ue prjtjdjbj

    piscnj7 k j prjtjdjbj BNC] `jh nisifvjbvhnj sjori j shstiec ^D]/H], qui cj sir djepcrcnj

    dje j NC] irc djfshnircnj echs bivi, nc j tirej Bhlat\ihlat fc shlbc nj prjtjdjbj.

    C _@D >93= djfte c ribcj ni tjncs cs _@Ds qui nisdrivie j prjtjdjbj;

    3 BNC];^ai ]rjtjdjb W_@D>933U73 BNC];Nhridtjry Hf`jrecthjf Ejnibs W_@D>93?U7

    3 BNC];Cutaifthdcthjf Eitajns cfn Tidurhty Eidacfhses W_@D>934U7

    3 BNC];Ttrhfl _iprisiftcthjf j` Nhsthfluhsain Fceis W_@D>93>U7

    3 BNC];Ttrhfl _iprisiftcthjf j` Ticrda @hbtirs W_@D>939U7

    3 BNC];Yfh`jre _isjurdi Bjdctjr W_@D>930U73 BNC];Tyftcxis cfn Ectdahfl _ubis W_@D>93931U7

    3 BNC];Tdaiec jr Ysir Cppbhdcthjfs W_@D>938U.

    Csshe djej qucbquir prjtjdjbj, j BNC] nitirehfc j djfkuftj ni rilrcs qui djftrjbce

    j `ufdhjfceiftj ni ue sirvhj ni nhritrhjs, ju sikc, ibi ispidhdc djej sir ricbhzcnc

    c djfixj, djeufhdcj i c trcfs`irfdhc njs ncnjs. Cs jrecs ni creczifceiftj, j

    Thstiec Jpircdhjfcb i j lirifdhcnjr ni ocfdj ni ncnjs fj `czie pcrti nj prjtjdjbj

    isscs sj dcrcdtirsthdcs ispiddcs ni dcnc hepbieiftcj nj BNC].

    Iepriscs i hfsthtuhis njs echs vcrhcnjs t hpjs i tcecfajs pjssuie uec hffhncni ni

    sirvhjs qui fidisshtce nc cutifthdcj njs usurhjs. cri`cs djej ricbhzcr j bjlhf ie

    istcis ni trcocbaj, cdisscr djftcs ni i-echb, cdisscr shstiecs ni listj, shstiecs ni

    djftrjbi ni istjqui itd. sj ricbhzcncs j tiepj tjnj.

    @hlurc 4.?

    Cpbhdcis

    cdisscfnj c

    eisec ocsi ni

    usurhjs.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    62/220

    >>

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    @ufdhjfceiftj nj BNC]

    q3 Ocsicnj fj ejnibj dbhifti/sirvhnjr3 Dbhifti ricbhzc uec riquhshj cj sirvhnjr

    3 Tirvhnjr rispjfni ju ifdcehfac c riquhshj pcrc jutrj sirvhnjr BNC]

    3 ^jnjs js sirvhnjris cprisiftce c eisec vhsj nj nhritrhj

    J BNC] uec cpbhdcj dbhifti/sirvhnjr. Fjrecbeifti j sirvhnjr uthbhzc c pjrtc 418 ^D]

    pcrc djfixis sie drhptjlrcc, i c pjrtc 040 pcrc djfixis dje TTB.

    Ye dbhifti BNC] djfidtc-si c ue sirvhnjr BNC] i i`ituc riquhshis, j sirvhnjr rispjfni

    ju iftj cpjftc pcrc jfni j dbhifti pjni djbitcr echs hf`jrecis, pjr ixiepbj, jutrj

    sirvhnjr BNC].

    Hfnipifnifti ni qucb sirv hnjr j dbhifti si djfidti, tjnjs nivie cprisiftcr c

    eisec vhsj nj nhritrhj.

    C uthbhzcj nj BNC] ridjeifncnc pcrc cpbhdcis qui fidisshtce ricbhzcr euhtcs djf-

    subtcs ocsi, pjhs ibi `jh prjkitcnj pcrc ctifnir c lrcfnis vjbueis ni djfsubtcs ie ue

    durtj ispcj ni tiepj, cpbhdcis qui fidisshtce ricbhzcr euhtcs jpircis ni isdrhtc

    prjvcvibeifti fj tirj ue nisiepifaj scths`ctrhj.

    qJpircis;3 Djfsubtc (sicrda i djepcri)

    3 Ctucbhzcj (cnn, nibiti, ejnh`y i ejnh`yNF)

    3 Jpircj i djftrjbi (ohfn, ufohfn, cocfnjf)

    J prjtjdjbj BNC] djfshsti ie fjvi jpircis nhstrhouncs ie trs dctiljrhcs; djfsubtc7

    ctucbhzcj i cutifthdcj i djftrjbi.

    Djfsubtc;

    3 sicrda; jpircj ni ousdc pjr ue (@hlurc 4.4) ju ebthpbjs (@hlurc 4.>) risubtcnjs7

    3 djepcri;jpircj ni djepcrcj dje nitirehfcnc iftrcnc.

    Dbhifti BNC] Tirvhnjr BNC]

    Ticrda jpircthjf

    _iturfin iftry

    _isubt djni

    Dbhifti BNC] Tirvhnjr BNC]

    Ticrda jpircthjf

    @hrst iftry riturfin

    Tidjfn iftry riturfin

    Fta iftry riturfin

    _isubt djni

    @hlurc 4.4

    Jpircj shepbis

    ni ousdc.

    @hlurc 4.>

    Jpircj ni ousdc

    dje ebthpbjs

    risubtcnjs.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    63/220

    >9

    Dcptubj

    4-

    TirvhnjrBNC]

    Ctucbhzcj;

    3 cnn; jpircj ni cnhj ni ue ju echs iftrcncs fc ocsi7

    3 nibiti; jpircj ni riejj ni ncnjs nc ocsi7

    3 ejnh`y; jpircj ni ejnhdcj ni ncnjs nc ocsi7

    3 ejnh`y NF; jpircj ni ejnhdcj nc pjshj ju rifjeicr ncnjs fc ocsi7

    Cutifthdcj i djftrjbi;

    3 ohfn; jpircj ni cutifthdcj73 ufohfn; ifdirrc uec djfixj BNC]7

    3 cocfnjf; jpircj ni dcfdibceiftj ufhbctircb ni uec jpircj.

    Dbhifti BNC] Tirvhnjr BNC]

    Jpif djffidthjf cfn ohfn

    Ohfn risubt

    Ticrda jpircthjf

    @hrst iftry riturfin

    Tidjfn iftry riturfin

    _isubt j` sicrda jpircthjf

    Yfohfn jpircthjf

    Dbjsi djffidthjf

    Istruturc nc ocsi BNC]

    qNH^ (Nhridtjry Hf`jrecthjf ^rii)3 Jokitjs

    ? Djrrispjfni c ue djfkuftj ni ctrhoutjs (pcris dacvi/vcbjr) qui creczifcehf`jrecis

    ? Ctrhoutjs fjrechs

    ? Ctrhoutjs jpircdhjfchs

    3 BNC] JokidtDbcss

    3 BNC] Tdaiec

    Yec ocsi BNC] ju nhritrhj BNC] jfni cs hf`jrecis istj creczifcncs. Issc ocsi

    nivi siluhr j ejnibj Q.9==, djf`jrei eifdhjfcejs cftirhjreifti.

    Js jokitjs ni uec ocsi BNC] sj jrlcfhzcnjs ahircrquhdceifti, `jrecfnj uec istruturc

    ni rvjri djfaidhnc djej NH^ (Nhridtjry Hf`jrecthjf ^rii). Dcnc vrthdi nc NH^ ue jokitji sucs cristcs nifie c ribcj iftri ibis.

    @hlurc 4.9

    Jpircj tphdc

    ni cdissj c ocsi

    nj BNC].

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    64/220

    >0

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    df5Kjj nc Thbvc df5]inrj Tjuzc

    ju5`ufdhjfrhjsju5liriftis

    ju5nhritjrhc

    nd5 rfp,nd5or

    ju5jpircdjis

    ju5_hj ni Kcfihrj ju5Oibeju5Tcbvcnjr

    Fc lurc 4.0 tiejs ue ixiepbj ni uec NH^. J vrthdi echs cj tjpj (dje j fjei rfp.or)

    dacecnj ni rchz i c ocsi nc fjssc rvjri. Yec NH^ nivi tir uec fhdc rchz i tjnjs js jutrjs

    jokitjs istcrj ribcdhjfcnjs c ibc, sifnj csshe nhziejs qui c NH^ uec rvjri ifrchzcnc.

    Cs cristcs qui bhlce js vrthdis fjs pirehtie pirdioir c ribcj ni ahircrquhc iftri js

    jokitjs. ]jr ixiepbj; vcejs djfshnircr qui j fjssj jokithvj jotir cs hf`jrecis ri`i -

    riftis cj vrthdi ]inrj Tjuzc. Cfcbhscfnj fjssc rvjri pirdioiejs qui ibi ist cochxj

    njs vrthdis `ufdhjfrhjs, jpircis, _hj ni Kcfihrj i rfp.or, pjrtcftj, pcrc djfsi-

    luhrejs dailcr ct j fjssj cbvj pridhscriejs pcsscr pjr tjnc c ahircrquhc nc fjssc rvjri

    djeicfnj pibc rchz siluhfnj js vrthdis ct dailcr cj jokitj qui djfte js vcbjris qui

    nisikcejs ridupircr.

    Jutrc `jrec ni hbustrcr issc jrlcfhzcj `czir uec djepcrcj dje j shstiec ni crquhvjs

    nj Bhfux, jfni tjncs cs hf`jrecis istj jrlcfhzcncs niochxj ni uec fhdc rchz. Jrlcfh -

    zcfnj fjssc NH^ djej uec rvjri ni nhritrhjs ibc dcrc sieibacfti heclie c siluhr;

    rfp.or

    |ZZ Tcbvcnjr

    |ZZ _hj ni Kcfihrj

    | |ZZ jpircdjis

    | |ZZ liriftis

    | |ZZ `ufdhjfcrhjs

    | |ZZ Kjj nc Thbvc

    | |ZZ ]inrj Tjuzc

    |ZZ Oibie

    | |ZZ nhritjrhc

    Yec NH^ pjni riithr c jrlcfhzcj pjbthdc, lijlrdc i/ju jrlcfhzcdhjfcb nc ieprisc ju

    hfsthtuhj, sifnj uec prthdc euhtj djeue ocsicr-si ie fjeis k ixhstiftis, djej js

    njefhjs ni NFT, pcrc nifhj njs fvihs echs oshdjs nc ahircrquhc.

    @hlurc 4.0

    Ixiepbj ni uec

    rvjri ni nhritrhj.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    65/220

    >1

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    Nhsthfluhsain Fcei (NF)

    q@jrec ni hnifthdcj ni ue jokitj ie ribcj c tjnc c ocsi nj BNC]@jrecnj pibc djfdctifcj nj ctrhoutj _NF nj jokitj nisikcnj echs js ctrhoutjs _NF

    ni tjnjs js jokitjs heinhctceifti cftirhjris ct c rchz nc ocsi

    3 Cfcbjlhc dje j shstiec ni crquhvjs nj Bhfux;? _NF 5 dcehfaj ribcthvj ni ue crquhvj

    ? NF 5 dcehfaj cosjbutj ni ue crquhvj

    J Nhsthfluhsain Fcei ju NF c `jrec ni hnifthdcj ni ue jokitj ie ribcj c tjnc

    ocsi nj BNC]. Ibi fj ue ctrhoutj nj jokitj, ecs `jrecnj c pcrthr nc djfdctifcj nj

    siu prprhj ctrhoutj _NF siluhnj pjr tjnjs js ctrhoutjs _NF njs jokitjs supirhjris ct

    c rchz nc rvjri. ]jr ixiepbj; vcejs vjbtcr lurc 4.0 jfni isdjbaiejs j vr thdi ]inrj

    Tjuzc, j _NF nissi jokitj df5]inrj Tjuzc, j jokitj heinhctceifti supirhjr pjssuh j

    _NF ju5`ufdhjfcrhjs, j jokitj heinhctceifti supirhjr ju5`ufdhjfcrhjs pjssuh j _NF

    ju5jpircdjis, j jokitj heinhctceifti supirhjr pjssuh j _NF ju5_hj ni Kcfihrj i pjr e j

    jokitj heinhctceifti supirhjr c rchz nc fjssc rvjri. Ti kuftcrejs tjnjs issis ctrhoutjs

    _NF tiriejs j NF fj fjssj jokitj; df5]inrj Tjuzc,ju5`ufdhjfcrhjs,ju5jpircdjis,

    ju5_hj ni Kcfihrj,nd5rfp,nd5or.

    Ixiepbjs ni NFs;

    3 ju5Tcbvcnjr,nd5rfp,nd5or

    3 df5`ufdhjfcrhjs,ju5jpircdjis,ju5_hj ni Kcfihrj,nd5rfp,nd5or

    ]jniejs fjtcr qui j NF riprisiftcnj ni ochxj pcrc dhec fc fjssc rvjri, ju sikc, cps

    bjdcbhzcrejs j jokitj qui nisikcejs hnifthdcr niviejs siluhr cs cristcs qui j bhlce ct c

    rchz nc fjssc NH^ nissc `jrec djfsiluhejs ejftcr j dcehfaj pcrc dailcr ibi.

    ]crc cdhbhtcr j iftifnheiftj pjniejs czir uec cfcbjlhc cj shstiec ni crquhvjs nj Bhfux, jfni;

    3 _NF; dcehfaj ribcthvj ni ue crquhvj, ixiepbj; risjbv.djf`7

    3 NF;dcehfaj cosjbutj ni ue crquhvj, ixiepbj; /itd/risjbv.djf`.

    df5]inrj Tjuzc

    ju5`ufdhjfrhjs

    ju5liriftis

    ju5jpircdjis

    nd5 rfp,nd5or

    ju5_hj ni Kcfihrj

    _NF; nd5rfp,nd5orNF; nd5rfp,nd5or

    _NF; ju5_hj ni KcfihrjNF; ju5_hj ni Kcfihrj,nd5rfp,nd5or

    _NF; ju5jpircdjisNF; ju5jpircdjis,ju5_hj ni Kcfihrj,nd5rfp,nd5or

    _NF; ju5jpircdjis

    NF; ju5`ufdhjfrhjs,ju5jpircdjis,ju5_hj ni Kcfihrj,nd5rfp,nd5or

    _NF; ju5jpircdjis

    NF; df5]inrj Tjuzc,ju5`ufdhjfrhjs,ju5jpircdjis,ju5_hj ni Kcfihrj,nd5rfp,nd5or

    _NF; ju5jpircdjis

    NF; ju5liriftis,ju5`ufdhjfrhjs,ju5jpircdjis,ju5_hj ni Kcfihrj,nd5rfp,nd5or

    @hlurc 4.

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    67/220

    >8

    Dcptubj

    4-

    TirvhnjrBNC]

    ]jniejs uthbhzcr qucbquir ctrhoutj pcrc nitirehfcr j _NF ni ue jokitj, dcfnj c dcrlj

    nj cnehfhstrcnjr nifhr qucb sir j echs hfnhdcnj pcrc dcnc dcsj. euhtj hepjrtcfti qui

    j _NF sikc ue ctrhoutj dje vcbjr fhdj pcrc cquibi rcej nc rvjri. Ie dcsj ni nvhnc

    sjori qucb ctrhoutj uscr, ridjeifncnj uthbhzcr cblue ctrhoutj nifhnj djej jorhlctrhj

    fj sdaiec. Ixhstie dcsjs ie qui pjssvib djeohfcr njhs ju echs ctrhoutjs, `jrecfnj ue

    eubth-vcbuin _NF.

    Ixiepbj NF;

    nf; df5]inrj Tjuzc+uhn5psjuzc,ju5`ufdhjfcrhjs,ju5jpircdjis,ju5_hj ni

    Kcfihrj,nd5rfp,nd5or

    BNH@

    q@jrectj uthbhzcnj pcrc djeufhdcj dje j nhritrhj BNC]Djepctvib dje c lrcfni echjrhc njs sirvhjs ni nhritrhj

    Crquhvj ni tixtj shepbis dje shftcxi ispiddc;

    2ctrhoutj6; 2vcbjr6C^IFJ; Ispcjs fj fcb nc bhfac `czie pcrti nj vcbjr ni ue ctrhoutj

    BNH@ (BNC] Nctc Hftirdacfli @jrect) j `jrectj uthbhzcnj pcrc djeufhdcj dje j nhri-

    trhj BNC]. Ctrcvs nibi pjniejs hepjrtcr ju ixpjrtcr hf`jrecis nj nhritrhj, cnhdhjfcr,

    ixdbuhr ju ejnhdcr jokitjs, ejnhdcr djflurcis nj nhritrhj itd.

    C echjrhc njs sirvhjs ni nhritrhj supjrtce issi `jrectj, lcrcfthfnj csshe lrcfni

    hftirjpircohbhncni iftri ibis. Ye crquhvj BNH@ ue crquhvj ni tixtj shepbis dje c shftcxi

    djf`jrei ixiepbj c siluhr;

    # hssj ue djeiftrhj

    nf; 2nhsthfluhsain fcei62ctrhoutj6 ; 2vcbjr6

    2ctrhoutj6 ; 2vcbjr6

    Crquhvj BNH@ shepbis dje nucs iftrcncs, jfni dcnc fjvc iftrcnc nivi sir sipcrcnc nc

    iftrcnc cftirhjr pjr uec bhfac ie orcfdj.

    nf; ju5Tcbvcnjr,nd5rfp,nd5or

    jokidtdbcss; tjp

    jokidtdbcss; jrlcfhzcthjfcbYfht

    ju; Tcbvcnjr

    nf; df5]inrj ni Tjuzc,ju5`ufdhjfcrhjs,ju5jpircdjis,ju5_hj niKcfihrj,nd5rfp,nd5or

    jokidtdbcss; tjp

    jokidtdbcss; pirsjf

    jokidtdbcss; jrlcfhzcthjfcb]irsjf

    df; ]inrj ni Tjuzc

    sf; Tjuzc

    uhn; psjuzc

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    68/220

    9=

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

    Sucfnj ue vcbjr pjssuhr cblue dcrcdtiri ispidhcb, j fjei nj ctrhoutj nivir pjssuhr echs

    ue dcrcdtiri ;, siluhnj nj vcbjr nj ctrhoutj djnhdcnj ie ocsi0>.

    Ixiepbj;

    nf; uhn5kshbvc,ju5`ufdhjfcrhjs,ju5jpircdjis,ju5_hj ni Kcfihrj,nd5rfp,nd5or

    jokidtDbcss; tjp

    jokidtDbcss; cddjuft

    jokidtDbcss; pjshxCddjuft

    uhn; kshbvc

    df; Te/Nj?1l[LIlY?bsneIG

    #df; Kjj nc Thbvc

    usir]csswjrn; {drypt}Q9/NOr\]JSScH

    bjlhfTaibb; /ohf/ocsa

    uhnFueoir; 3=3=

    lhnFueoir; 3=3=

    ajeiNhridtjry; /ajei/kshbvc

    Cj cfcbhscr issis ixiepbjs, djeicejs c hnifthdcr js ctrhoutjs qui sirj uthbhzcnjs pibjfjssj sirv hnjr BNC]. Pcejs djeiftcr dje echs nitcbais j bthej ixiepbj.

    3 Bhfac 3;Cprisiftc j Nhsthfluhsain Fcei. ctrcvs nibi qui djfsiluhejs hnifthdcr niecfihrc fhdc j jokitj ie fjssc rvjri. J ctrhoutj isdjbahnj pcrc j _NF `jh j uhn7

    3 Bhfacs ?, 4 i >;Nisdrivie quchs sj cs jokidtDbcssis nj fjssj jokitj, ju sikc, sj ibcsqui vj nitirehfcr quchs sirj js ctrhoutjs qui pjniriejs uthbhzcr pcrc dcrcdtirhzcr

    fjssj jokitj7

    3 Bhfac 9;Hnifthdcnjr nj usurhj YHN73 Bhfac 0; Djeejf Fcei, ist djnhdcnj ie ocsi0>, pjhs pjssuh dcrcdtiris ispidhchs7

    3 Bhfac

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    69/220

    93

    Dcptubj

    4-

    TirvhnjrBNC]

    ]jniejs fjs djfidtcr cj sirvhnjr BNC] ni trs `jrecs nh`iriftis;

    Y_B ]rjtjdjbj ^rcfspjrti

    bncp;/// BNC] ^D] pjrtc 418

    bncps;/// BNC] sjori TTB ^D] pjrtc 040

    bncph;/// BNC] H]D (Yfhx-njechf sjdgit)

    Djf`jrei eifdhjfcejs cftirhjreifti j sirvhnjr BNC] uthbhzc c pjrtc 418 ^D] pcrc

    djfixis sie drhptjlrcc i c pjrtc 040 pcrc djfixis dje TTB, iftritcftj dcsj j sirv hnjr

    tifac shnj djflurcnj ie uec pjrtc nh`irifti nc pcnrj niviejs cnhdhjfcr j dcrcdtiri

    ; cps j fjei/H] nj sirvhnjr siluhnj nj feirj nc pjrtc qui nivir sir uthbhzcnc pcrc c

    djfixj, ixiepbj; bncp;//38?.301.=.3;3?4 ju bncps;//38?.301.=.3;4?3.

    ]crc djfixis ctrcvs ni sjdgit (H]D) j pcta djepbitj nj crquhvj nivi sir djnhdcnj i

    hf`jrecnj fc Y_B. Pcejs supjr qui j sjdgit djrrispjfnc cj crquhvj /vcr/ruf/sbcpn/bncph,

    fissi ixiepbj c Y_B ni djfixj sir djf`jrei ixhohnc cochxj;

    bncph;//%?vcr%?ruf%?sbcpn%?bncph

    Ixhstie vrhcs `jrecr ni djfvirtir ue ]C^A ie uec Y_B vbhnc, vcejs dhtcr ue ixiepbj

    uthbhzcfnj j pirb;

    pirb -EY_H;;Isdcpi -i prhft urhZisdcpi(/vcr/ruf/sbcpn/bncph)7

    Cljrc ocstc uthbhzcr j dcehfaj djnhdcnj fc ajrc ni ricbhzcr c djfixj dje j sirvhnjr;

    bncpcnn -A bncph;//%?vcr%?ruf%?sbcpn%?bncph -N df5cnehf,nd5ieprisc,nd5dje,nd5or

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    70/220

    9?

    CnehfhstrcjniThstiecsBhfux;TirvhjspcrcHftirfit

  • 7/23/2019 Administrao de Sistemas Linux: Servios para Internet

    71/220

    94

    Dcptubj

    >-

    BNC]Cvcfcnj

    >BNC] Cvcfcnj

    Iftifnir eibajr j ufdhjfceiftj njs sdaiecs i ncs dbcssis ni jokitjs, cthvcr

    enubjs, acohbhtcr j usj ni drhptjlrcc fc djeufhdcj iftri j dbhifti i j sirvhnjr,