Cov ntawv sib" foob pob hluav taws" hais txog ib txoj kev ntawm kev cais cov kev koom tes sab hauv thiab cov kev nkag rau pej xeem (xws li Is Taws Nem). Nws yog qhov tseeb siv thov kev nyab xeeb thev naus laus zis thiab thev naus laus zis technology raws li kev sib txuas lus niaj hnub sib txuas lus thev naus laus zis thiab cov ntaub ntawv kev nyab xeeb technology. Nws yog ntau dua thiab ntau siv nyob rau hauv kev sib txuas lus ntawm ib puag ncig ntawm ntiag tug network thiab pej xeem network, tshwj xeeb tshaj yog nkag mus siv Is Taws Nem.
Lub foob pob hluav taws feem ntau siv kho vajtse thiab software los tsim cov kev tiv thaiv ib puag ncig ntawm ib puag ncig ntawm sab hauv thiab sab nraud, kom thiaj li thaiv cov teeb meem kev nyab xeeb hauv lub network. Tsuas yog thaum lub foob pob hluav taws pom zoo, cov neeg siv tuaj yeem nkag rau hauv lub khoos phis tawm. Yog tias lawv tsis pom zoo, lawv yuav muab thaiv. Lub tswb muaj nuj nqi ntawm lub tshuab hluav taws xob zoo heev. Thaum ib tus neeg siv sab nraud xav nkag rau hauv lub khoos phis tawm, lub foob pob hluav taws yuav nrawm tawm qhov sib txuam Nws kuj ceeb toom rau cov neeg siv lawv tus cwj pwm, thiab txiav txim siab rau tus kheej los txiav txim siab seb puas yuav cia cov neeg siv sab nraud nkag rau sab hauv. Tsuav lawv yog cov neeg siv nyob rau hauv lub network ib puag ncig, lub foob pob hluav taws tuaj yeem ua qhov kev nug zoo thiab ncaj qha rau cov neeg siv cov ntaub ntawv qhia nws, thiab tom qab ntawd tus neeg siv yuav tsum tau siv cov chaw sib haum ntawm cov firewall raws li nws tus kheej xav tau los thaiv cov neeg siv kev coj cwj pwm uas yog tsis pub. Los ntawm lub foob pob hluav taws, cov ntaub ntawv ntws thiab cov ntaub ntawv tuaj yeem saib tau zoo, thiab qhov upload thiab download ceev ntawm cov ntaub ntawv xov xwm tseem tuaj yeem tau txais, uas yooj yim rau cov neeg siv kom muaj kev tswj tau zoo rau kev siv lub koos pij tawj. Qhov teeb meem sab hauv ntawm lub koos pis tawj kuj tuaj yeem hla ntawm lub foob pob hluav taws no Rau kev saib, nws tseem muaj cov haujlwm ntawm pib thiab kaw cov kev pabcuam, thiab lub luag haujlwm hauv lub koos pij tawj yog qhov kev qhia thiab txheeb ntawm qhov teeb meem ntawm lub sijhawm tiag tiag thiab kev ua haujlwm txhua hnub qhov xwm txheej ntawm lub koos pij tawj' s sab hauv cov hluav taws xob los ntawm firewall. [2]
Lub foob pob hluav taws yog ib qho kev nkag mus tswj kev ntsuas tau ua thaum ob lub network sib txuas lus, uas tuaj yeem tiv thaiv cov hackers hauv lub network los nkag rau koj lub network kom loj tshaj plaws. Hais txog qhov sib xyaw ua ke ntawm cov kev sib txuam uas tau teeb tsa hauv cov tes hauj lwm sib txawv (xws li lub vev xaib sab nraud ntseeg thiab tsis muaj kev ntseeg siab) lossis network kev ruaj ntseg. Nws yog tib txoj kev nkag thiab tawm ntawm cov ntaub ntawv ntawm cov sib txawv ntawm cov network lossis network kev ruaj ntseg ua ke. Nws tuaj yeem tswj (tso cai, tsis lees, saib xyuas) cov ntaub ntawv ntws rau hauv thiab tawm ntawm lub network raws li txoj cai kev ruaj ntseg ntawm lub lag luam, thiab nws muaj zog los tiv thaiv kev muaj peev xwm. Nws yog cov khoom siv hluav taws xob uas muab cov kev pabcuam kev nyab xeeb thiab paub txog kev ua haujlwm hauv network thiab ntaub ntawv kev nyab xeeb. Kev tawm ntawm kev tawm mus, cov ntsa nyiaj yog lub tshuab hluav taws xob sib cais, qhov ciaj ciam thiab tus txheeb xyuas ntsuas. Nws ua tau zoo soj qab ib qho kev ua haujlwm ntawm lub intranet thiab Internet thiab ua kom muaj kev ruaj ntseg ntawm lub network sab hauv.