Packet sniffers lossis raws tu qauv ntsuas yog cov cuab yeej siv los ntawm cov kws tshaj lij hauv lub network los kuaj xyuas cov teeb meem ntsig txog network. Hackers siv pob ntawv sniffers rau lub hom phiaj tsis muaj hwj chim, xws li kev soj ntsuam ntawm cov neeg siv network thiab khaws cov passwords.
Packet sniffers tuaj ntau hom. Qee pob ntawv sniffers siv los ntawm cov kws tshaj lij hauv lub network yog ib lub hom phiaj kho vajtse daws teeb meem. Hauv qhov sib piv, lwm cov pob ntawv sniffers yog cov ntawv thov software uas khiav ntawm cov qauv siv cov khoos phis tawj, siv cov khoom siv network uas muab rau ntawm tus tswv tsev ntaus ntawv los ua cov ntawv ntim thiab txhaj tshuaj.
How Packet Sniffers Work
Packet sniffers ua haujlwm los ntawm kev cuam tshuam thiab nkag mus rau hauv lub network tsheb los ntawm kev xaim lossis wireless network interface ntawm nws lub computer host.
Ntawm ib lub network, cov ntaub ntawv uas tuaj yeem ntes tau nyob ntawm tus qauv ntawm lub network. Ib pob ntawv sniffer tuaj yeem pom cov tsheb khiav ntawm tag nrho lub network lossis tsuas yog qee ntu; nws nyob ntawm seb lub network keyboards tau teeb tsa li cas. Ntawm cov tes hauj lwm wireless, pob ntawv sniffers feem ntau yog ntes ib channel ntawm ib lub sij hawm, tshwj tsis yog lub khoos phis tawj tswj hwm muaj ntau lub wireless interfaces uas tso cai rau kev ntes ntau channel.
Txawm hais tias feem ntau pob ntawv sniffers siv niaj hnub no yog software, hardware packet sniffers tseem ua lub luag haujlwm hauv kev daws teeb meem hauv network. Hardware packet sniffers ntsaws ncaj qha rau hauv lub network thiab khaws lossis xa cov ntaub ntawv uas lawv khaws.
Thaum cov ntaub ntawv pob ntawv nyoos raug ntes, pob ntawv sniffing software tshuaj xyuas nws thiab nthuav tawm hauv daim ntawv nyeem tau kom tus neeg siv software tuaj yeem nkag siab nws. Tus neeg soj ntsuam cov ntaub ntawv tuaj yeem saib cov ntsiab lus ntawm kev sib cuam tshuam ntawm ob lossis ntau qhov ntawm lub network.
Network cov kws tshaj lij siv cov ntaub ntawv no los txiav txim siab qhov twg muaj qhov yuam kev, xws li txiav txim siab lub cuab yeej twg ua tsis tau raws li kev thov network.
Hackers siv sniffers los eavesdrop ntawm unencrypted cov ntaub ntawv nyob rau hauv cov pob ntawv kom pom dab tsi cov ntaub ntawv yog pauv ntawm ob tog. Lawv tuaj yeem ntes cov ntaub ntawv xws li passwords thiab authentication tokens yog tias lawv raug xa mus rau qhov tseeb. Hackers tseem paub tias yuav ntes cov pob ntawv rau tom qab ua si hauv replay, txiv neej-hauv-tus-nruab nrab, thiab pob ntawv txhaj tshuaj tiv thaiv uas qee lub cev muaj kev cuam tshuam rau.
kab hauv qab
Zoo li cov neeg feem coob, network engineers thiab hackers nyiam cov khoom dawb, uas yog vim li cas qhib qhov chaw thiab freeware sniffer daim ntawv thov feem ntau lawv cov cuab yeej xaiv. Ib qho nrov qhib qhov chaw muab yog Wireshark, yav tas los hu ua Ethereal. Siv nws los hnia koj cov pob ntawv hauv thaj teb, khaws cia rau hauv CAP cov ntaub ntawv, thiab tshuaj xyuas lawv tom qab.
Tiv thaiv lub Network thiab nws cov ntaub ntawv los ntawm Hackers siv Sniffers
Yog tias koj yog tus kws tshaj lij network lossis tus thawj coj thiab koj xav pom tias leej twg hauv koj lub network siv lub cuab yeej sniffer, kos tawm lub cuab yeej hu ua Antisniff. Nws pom yog tias lub network interface ntawm koj lub network tau muab tso rau hauv hom promiscuous. Tsis txhob luag; uas yog lub npe tiag tiag rau nws, thiab nws yog hom xav tau rau pob ntawv ntes cov haujlwm.
Lwm txoj hauv kev los tiv thaiv koj lub network tsheb los ntawm kev sniffed yog nrog encryption, xws li Secure Sockets Layer (SSL) lossis Transport Layer Security (TLS). Encryption yuav tsis tiv thaiv pob ntawv sniffers los ntawm pom cov ntaub ntawv qhov chaw thiab qhov chaw, tab sis nws muaj peev xwm encrypt cov ntaub ntawv pob ntawv them nyiaj kom tag nrho cov sniffer pom yog gibberish.
Txhua qhov kev sim hloov lossis txhaj cov ntaub ntawv rau hauv cov pob ntawv ua tsis tiav vim tias messing nrog cov ntaub ntawv encrypted ua rau muaj qhov yuam kev uas pom tseeb thaum cov ntaub ntawv encrypted yog decrypted ntawm lwm qhov kawg.
Sniffers yog cov cuab yeej zoo rau kev kuaj xyuas cov teeb meem hauv cov nroj tsuag. Txawm li cas los xij, lawv kuj tseem muaj txiaj ntsig zoo rau hacking lub hom phiaj. Nws yog ib qho tseem ceeb rau cov kws tshaj lij kev ruaj ntseg kom paub lawv tus kheej nrog cov cuab yeej no kom lawv pom tau tias tus neeg nyiag khoom siv lawv li cas hauv lawv lub network.
Type of Information Packet Sniffers sau
Txawm hais tias pob ntawv sniffers yog cov cuab yeej ntawm kev lag luam rau network engineers, lawv kuj muaj nyob rau hauv qee lub npe nrov antivirus software thiab raws li malware hauv nefarious email attachments.
Packet sniffers tuaj yeem sau yuav luag txhua hom ntaub ntawv. Lawv tuaj yeem sau cov passwords thiab cov ntaub ntawv nkag mus, nrog rau cov vev xaib uas tau mus xyuas los ntawm tus neeg siv lub computer thiab cov neeg siv tau saib thaum nyob hauv qhov chaw. Lawv tuaj yeem siv los ntawm cov tuam txhab kom taug qab cov neeg ua haujlwm network siv thiab luam theej tawm cov tsheb khiav mus rau qhov tsis zoo. Qee zaum, ib pob ntawv sniffer tuaj yeem sau tag nrho cov tsheb khiav hauv lub network.
Packet sniffers yog qhov muaj txiaj ntsig vim tias lawv txwv cov malware thiab muaj txiaj ntsig rau kev daws teeb meem hauv network, tab sis lawv yuav tsum tau siv nrog software ruaj ntseg zoo los tiv thaiv lawv txoj kev siv tsis raug.
