Kev nqos pob ntseg muaj suab nrov zoo li qhov tseeb txoj kev siv yeeb tshuaj, tab sis nws nyob deb ntawm nws. Cov phom dlej dlawb los sis cov lug thaam kws yog cov cuab yeej kws siv cov kws khib nyuj kws siv cov lug ntawm kev txheebze kws khu. Cov neeg tuaj yeem siv pob ntseg kuj tuaj yeem siv los ntawm nyiag nkas rau tsawg tshaj li kev ua haujlwm xws li kev nyiag ntawm cov neeg siv kev sib tham network thiab sau cov passwords.
Cia wb mus saib ntawm dab lub pob khoom sniffer yog dab tsi thiab nws ua li cas:
Cov neeg tuaj yeem nqa khoom tuaj rau hauv ob peb hom ntawv. Muaj qee cov pob khoom siv los ntawm cov kws kho mob network yog ib lub hom phiaj kho cov khoom ntiag tug thaum lwm lub hnab ntim khoom siv yog cov software siv los ntawm cov neeg siv khoom siv hauv tsev kawm ntawv, siv cov khoom siv hauv lub computer los ua cov ntawv ntes thiab kev txhaj tshuaj.
Cov Haujlwm Npaj Cov Haujlwm Npaum Cas Ua Tau Licas?
Cov neeg ntiav neeg ua haujlwm ua hauj lwm los ntawm kev cuam tshuam thiab kos cov kev sib tshuam network uas lawv pom 'pom' ntawm lub wired lossis wireless network interface uas lub pob ntawv sniffing software tau nkag mus rau nws lub computer host.
Nyob ntawm ib lub network, dab tsi yuav ua tau yog nyob ntawm tus qauv ntawm lub network. Ib pob ntawv sniffer tej zaum yuav pom cov tsheb khiav ntawm tag nrho cov network lossis tsuas muaj qee ntu ntawm nws, nyob ntawm seb lub koos pij hluav taws xob sib kho, muab tso rau, thiab lwm yam. Rau cov wireless networks, packet sniffers feem ntau tsuas yog ntes ib channel ntawm ib lub sij hawm lub computer hauv chaw ua hauj lwm muaj ntau lub wireless interfaces uas pub rau ntau tus neeg ntes.
Thaum cov ntaub ntawv ntim cov ntaub ntawv khaws cia tas lawm, cov ntaub ntawv yuav tsum txheeb xyuas thiab nthuav tawm rau hauv tib neeg daim ntawv tuaj kom tus neeg siv lub pob ntawv software ua kom paub meej txog nws. Tus neeg txheeb xyuas cov ntaub ntawv tuaj yeem saib cov ntsiab lus ntawm 'kev sib tham' tshwm sim ntawm ob lossis ntau dua ntawm lub network. Network technicians tuaj yeem siv cov ntaub ntawv no los txiav txim seb qhov twg yog qhov txhaum, xws li txiav txim siab uas ntaus ntawv tsis ua raws li kev thov rau lub network.
Hackers siv tau sniffers rau eavesdrop ntawm unencrypted cov ntaub ntawv hauv cov pob ntawv seb cov ntaub ntawv yog muab sib hloov ntawm ob tog. Lawv tuaj yeem ntes cov ntaub ntawv xws li passwords thiab authentication tokens (yog lawv xa tuaj rau hauv qhov tseeb). Hackers tseem tuaj yeem ntes cov pob khoom rau yav tom ntej hauv kev ua si, kev sib tw hauv tib neeg, thiab pob ntawv tiv thaiv kabmob uas qee lub tshuab yuav ua rau.
Cov Cuab Yeej Duab Yeeb Yam Muaj Feem Xyuam Siv Hauv Cov Ntawv Sau Dawb?
Ib yam li txhua tus neeg, ob lub network engineers thiab hackers nyiam dawb khoom, uas yog vim li cas qhib qhov chaw thiab siv cov software freeware sniffer feem ntau yog cov cuab yeej ntawm kev xaiv rau pob ntawv ntim cov dej num. Ib qho ntawm ntau qhov qhib qhov khoom pub yog Wireshark (yav tas los hu ua Ethereal).
Kuv Yuav Tiv Thaiv Kuv Lub Network Thiab Cov Ntaub Ntawv Ntawm Cov Neeg Uas Siv Cov Sniffers?
Yog tias koj yog tus kws paub hauj lwm network lossis tus neeg khiav dej num thiab koj xav pom seb puas muaj leej twg nyob hauv koj lub network siv cov cuab yeej ywj pheej, kos tawm lub cuab yeej hu ua Antisniff. Antisniff tuaj yeem ntes tau yog tias lub network ntawm koj lub network tau raug muab tso rau hauv 'hom suab paj nruag' (tsis txhob ntshai tias nws yog lub npe tiag tiag rau nws), uas yog hom kev xav tau rau pob ntawv ntes.
Lwm txoj kev los tiv thaiv koj cov tsheb khiav hauv kev tawm los ntawm kev hnav yog siv encryption xws li Secure Sockets Layer (SSL) los yog Thauj Neeg Txhav Txhab Cai (TLS) . Encryption tsis tiv thaiv pob ntawv sniffers los ntawm kev pom qhov chaw thiab cov lus qhia chaw, tab sis nws encrypt cov ntaub ntawv pob ntawv lub payload kom tag nrho cov sniffer pom yog encrypted gibberish. Kev sim hloov los sis txhaj cov ntaub ntawv rau hauv cov pob ntawv puas yuav ploj vim messing nrog cov ntaub ntawv encrypted yuav ua rau cov uas tsis tau tshwm sim thaum cov ntaub ntawv encrypted tau decrypted ntawm lwm kawg.
Sniffers yog cov cuab yeej zoo rau kev kuaj teebmeem hauv cov teeb meem network. Hmoov tsis, lawv kuj pab tau rau txoj kev siv nyiaj nyiag thiab. Nws yog ib qho tseem ceeb rau kev ruaj ntseg cov tub txawg los qhia lawv tus kheej nrog cov cuab yeej no kom lawv pom tau tias yuav ua li cas ib tug hacker yuav siv lawv nyob rau lawv lub network.