Cov TAPs (Cov Chaw Nkag Mus Kuaj), kuj hu ua kuj hu uaKev Siv Cov Khoom Siv Rov Qab, Kev Sib Sau Ua Ke, Cov kais dej nquag, Cov kais dej tooj liab, Ethernet kais, Cov kais dej kho qhov muag, Lub cev kov, thiab lwm yam. Cov Taps yog ib txoj kev nrov rau kev tau txais cov ntaub ntawv hauv network. Lawv muab kev pom dav dav rau hauv cov ntaub ntawv hauv network thiab saib xyuas cov kev sib tham ob txoj kev sib txuas lus ntawm kab ceev tag nrho, tsis muaj pob ntawv poob lossis latency. Kev tshwm sim ntawm TAPs tau hloov pauv txoj hauv kev saib xyuas thiab kev soj ntsuam hauv network, hloov pauv txoj hauv kev nkag mus rau kev saib xyuas thiab kev tshuaj xyuas cov txheej txheem thiab muab cov kev daws teeb meem tiav thiab hloov pauv tau rau tag nrho cov txheej txheem saib xyuas.
Cov kev txhim kho thev naus laus zis tam sim no tau tsim ntau hom kais dej: kais dej uas sib sau ua ke ntau qhov txuas, kais dej rov tsim dua uas faib cov tsheb khiav ntawm qhov txuas ua ntau ntu, kais dej hla mus, thiab cov kais dej matrix.
Tam sim no, cov hom Tap nrov dua hauv kev lag luam suav nrog NetTAP thiab Mylinking, ntawm cov uas Mylinking tau lees paub tias yog lub npe Tap thiab NPB zoo heev hauv kev lag luam Suav, nrog rau feem lag luam siab, ruaj khov thiab ua tau zoo.
Cov txiaj ntsig ntawm TAP
1. Ntxig tau 100% ntawm cov ntaub ntawv pob ntawv yam tsis muaj kev poob pob ntawv.
2. Cov ntaub ntawv tsis tu ncua tuaj yeem saib xyuas tau, pab daws teeb meem.
3. Cov sijhawm tseeb, tsis muaj kev ncua thiab rov ua dua.
4. Kev teeb tsa ib zaug ua rau nws yooj yim txuas thiab txav lub tshuab ntsuas.
Qhov tsis zoo ntawm TAP
1. Koj yuav tsum siv nyiaj ntxiv los yuav lub splitter TAP, uas kim heev thiab siv qhov chaw khib.
2. Tsuas yog ib qhov txuas xwb thiaj li saib tau ib zaug.
Cov Kev Siv TAP Ib Txwm Muaj
1. Cov kev sib txuas ua lag luam: Cov kev sib txuas no xav tau lub sijhawm daws teeb meem luv luv heev. Los ntawm kev teeb tsa TAPs hauv cov kev sib txuas no, cov kws ua haujlwm hauv network tuaj yeem nrhiav thiab daws cov teeb meem sai sai.
2. Cov kev sib txuas tseem ceeb lossis cov pob txha nraub qaum. Cov no muaj kev siv bandwidth siab thiab tsis tuaj yeem cuam tshuam thaum txuas lossis txav lub tshuab ntsuas. TAP ua kom ntseeg tau 100% kev ntes cov ntaub ntawv yam tsis muaj pob ntawv poob, muab kev lees paub kev ua tau zoo rau kev tshuaj xyuas qhov tseeb ntawm cov kev sib txuas no.
3. VoIP thiab QoS: Kev ntsuam xyuas qhov zoo ntawm kev pabcuam VoIP xav tau kev ntsuas jitter thiab pob poob tseeb. TAPs lav tag nrho cov kev ntsuam xyuas no, tab sis cov chaw nres nkoj mirrored tuaj yeem hloov pauv cov nqi jitter thiab muab cov nqi poob pob tsis tseeb.
4. Kev daws teeb meem: Xyuas kom tseeb tias cov ntaub ntawv tsis xwm yeem thiab tsis raug tau pom. Cov chaw nres nkoj mirrored yuav lim cov ntaub ntawv no, tiv thaiv cov engineers los ntawm kev muab cov ntaub ntawv tseem ceeb thiab tiav rau kev daws teeb meem.
5. Daim ntawv thov IDS: IDS vam khom cov ntaub ntawv tiav los txheeb xyuas cov qauv kev nkag mus, thiab TAP tuaj yeem muab cov ntaub ntawv txhim khu kev qha thiab tiav rau lub kaw lus nrhiav kev nkag mus.
6. Pawg neeg rau zaub mov: Lub multi-port splitter tuaj yeem txuas 8/12 txuas tib lub sijhawm, ua kom muaj kev hloov pauv chaw taws teeb thiab dawb, uas yooj yim rau kev saib xyuas thiab kev tshuaj xyuas txhua lub sijhawm.
SPAN (Kev Tshawb Fawb Txog Chaw Nres Nkoj Hloov)kuj tseem hu ua Mirrored Port lossis Port Mirror. Cov switches siab heev tuaj yeem theej cov ntaub ntawv los ntawm ib lossis ntau qhov chaw nres nkoj mus rau qhov chaw nres nkoj uas tau teev tseg, hu ua "mirror port" lossis "destination port." Lub analyzer tuaj yeem txuas rau qhov chaw nres nkoj mirrored kom tau txais cov ntaub ntawv. Txawm li cas los xij, qhov feature no tuaj yeem cuam tshuam rau kev ua haujlwm ntawm switch thiab ua rau pob ntawv poob thaum cov ntaub ntawv raug overloaded.
Cov txiaj ntsig ntawm SPAN
1. Pheej yig, tsis tas yuav siv cov khoom siv ntxiv.
2. Txhua txoj kev khiav tsheb ntawm VLAN ntawm lub qhov hloov pauv tuaj yeem saib xyuas tau tib lub sijhawm.
3. Ib lub tshuab ntsuas tuaj yeem saib xyuas ntau qhov txuas.
Qhov tsis zoo ntawm SPAN
1. Kev ua kom cov ntaub ntawv khiav los ntawm ntau qhov chaw nres nkoj mus rau ib qho chaw nres nkoj tuaj yeem ua rau muaj kev thauj khoom ntau dhau thiab ua rau pob ntawv poob.
2. Cov pob ntawv raug rov ua dua thaum lawv dhau los ntawm lub cache, ua rau nws tsis yooj yim sua kom paub meej txog lub sijhawm xws li jitter, kev tshuaj xyuas lub sijhawm pob ntawv, thiab latency.
3. Tsis tuaj yeem saib xyuas cov pob ntawv yuam kev OSI txheej 1.2. Feem ntau cov chaw nres nkoj mirroring lim tawm cov pob ntawv tsis xwm yeem, uas tsis tuaj yeem muab cov ntaub ntawv ntxaws ntxaws thiab muaj txiaj ntsig rau kev daws teeb meem.
4. Vim tias qhov kev khiav tsheb ntawm qhov chaw nres nkoj mirrored ua rau CPU load ntawm qhov hloov pauv ntau ntxiv, nws yuav ua rau qhov kev ua haujlwm ntawm qhov hloov pauv poob qis.
Cov Kev Siv Ib Txwm ntawm SPAN
1. Rau cov kev sib txuas nrog bandwidth qis thiab muaj peev xwm mirroring zoo, ntau-port mirroring tuaj yeem siv rau kev tshuaj xyuas thiab kev saib xyuas yooj yim.
2. Kev soj ntsuam qhov sib txawv: Thaum tsis tas yuav tsum tau soj ntsuam kom meej, tsuas yog cov ntaub ntawv tsis tu ncua xwb txaus.
3. Kev tshuaj xyuas cov txheej txheem thiab daim ntawv thov: cov ntaub ntawv tseem ceeb tuaj yeem muab tau yooj yim thiab pheej yig los ntawm qhov chaw nres nkoj iav
4. Kev saib xyuas tag nrho VLAN: Kev siv tshuab multi-port mirroring siv tau yooj yim los saib xyuas tag nrho VLAN ntawm qhov hloov.
Kev Taw Qhia Txog VLAN:
Ua ntej, cia peb qhia txog lub tswv yim yooj yim ntawm thaj chaw tshaj tawm. Qhov no hais txog qhov ntau uas cov thav ntawv tshaj tawm (qhov chaw nyob MAC yog 1) tuaj yeem xa mus, thiab hauv lwm lo lus, qhov ntau uas kev sib txuas lus ncaj qha tuaj yeem ua tau. Hais lus nruj me ntsis, tsis yog tsuas yog cov thav ntawv tshaj tawm xwb, tab sis kuj tseem muaj ntau cov thav ntawv thiab cov thav ntawv unicast tsis paub tuaj yeem mus ncig tau yooj yim hauv tib thaj chaw tshaj tawm.
Chiv thawj, ib lub Layer 2 switch tsuas yog tsim tau ib qho broadcast domain xwb. Ntawm ib lub Layer 2 switch uas tsis muaj VLANs teeb tsa, txhua lub broadcast frame yuav raug xa mus rau txhua qhov chaw nres nkoj tshwj tsis yog qhov chaw nres nkoj txais (flooding). Txawm li cas los xij, kev siv VLANs tso cai rau lub network kom raug faib ua ntau lub broadcast domains. VLANs yog cov thev naus laus zis siv los faib cov broadcast domains ntawm Layer 2 switches. Los ntawm kev siv VLANs, peb tuaj yeem tsim cov qauv ntawm cov broadcast domains, ua rau muaj kev ywj pheej ntawm kev tsim network.
Lub sijhawm tshaj tawm: Cuaj hlis-04-2025
