I-irony ihlukumezekile ekuvikelekeni kolwazi ukuthi eziningi zezici ezenza amakhompiyutha alula noma asebenze kahle futhi amathuluzi asetshenziselwa ukuvikela nokuvikela inethiwekhi angasetshenziswa futhi ukusebenzisa nokunciphisa amakhompyutha namanethiwekhi afanayo. Yilokho okwenziwe nge-packet sniffing.
I- packet sniffer , ngezinye izikhathi ebizwa ngokuthi i- network monitor noma i-analyzer yenethiwekhi, ingasetshenziswa ngokusemthethweni yi-network noma umlawuli wesistimu ukuqapha nokuxazulula ukuhamba kwenethiwekhi. Ukusebenzisa ulwazi oluthunjwe yi-packet sniffer umlawuli angakwazi ukubona amaphakethe angalungile futhi asebenzise idatha ukukhomba amaphutha futhi asize ekugcineni ukudluliswa kwedatha yenethiwekhi.
Ngendlela yalo elula i-packet sniffer imane ithatha wonke amaphakethe yedatha adlulisa isikhombikubona senethiwekhi esinikeziwe. Ngokuvamile, i-packet sniffer yayizobamba amaphakethe kuphela ayehloselwe umshini obhekene nawo. Kodwa-ke, uma ifakwe kwimodi ephathekayo, i-packet sniffer nayo ikwazi ukubamba wonke amaphakethe adlula inethiwekhi kungakhathaliseki ukuthi iyaphi.
Ngokubeka i-packet sniffer kunethiwekhi enemodeni yokuziphatha okubi , umgibeli ononya angathatha futhi ahlaziye yonke inethiwekhi yethrafikhi. Ngaphakathi kwenethiwekhi enikeziwe, ulwazi lomsebenzisi nolwazi lwephasiwedi ngokuvamile ludluliselwa embhalweni ocacile okusho ukuthi ulwazi luzobukwa ngokuhlaziya amapakethe adluliselwa.
I-packet sniffer ingathatha kuphela ulwazi lwepakethe ngaphakathi kwe-subnet enikeziwe. Ngakho-ke, akunakwenzeka ukuthi umhlaseli ononya enze i-packer sniffer kunethiwekhi yabo ye- ISP futhi athathe ithrekhi yenethiwekhi kusuka ngaphakathi kwenethiwekhi yakho yezinkampani (nakuba kunezindlela ezikhona ezinsizakalweni eziningi noma ezingaphansi "ze-hijack" ezisetshenziswa kwinethiwekhi yakho yangaphakathi ukuze ziphumelele yenza iphakethe yokufuduza endaweni ekude). Ukuze wenze kanjalo, i-packet sniffer idinga ukuba isebenze kukhompuyutha engaphakathi kwenethiwekhi yenkampani. Kodwa-ke, uma umshini owodwa kunethiwekhi yangaphakathi ehlaselwa iThrojani noma enye ukuphulwa kwezokuphepha, lo muntu angasebenzisa i-packet sniffer kusuka kulowo mshini futhi asebenzise ulwazi lomsebenzisi nephasiwedi ethunjiwe ekunciphiseni eminye imishini kwinethiwekhi.
Ukuthola ama-packet ama-phonetti amahle kunethiwekhi yakho akuyona umsebenzi olula. Ngokwemvelo yayo i-packet sniffer ayiyona into. Ivele ibamba amaphakethe ahambela esibonakalayo senethiwekhi esibhekwayo. Lokhu kusho ukuthi ngokuvamile akukho siginesha noma umgwaqo ongalungile ukubuka lokho okuzobona umshini oqhuba i-packet sniffer. Kunezindlela zokubona ukuxhumeka kwenethiwekhi kwinethiwekhi yakho ehamba ngemodi yokuziphatha kabi kodwa lokhu kungase kusetshenziswe njengendlela yokuthola ama-pipetri ama-packet amahle.
Uma ungomunye wabafana abalungile futhi udinga ukugcina nokuqapha inethiwekhi, ngincoma ukuthi ujwayelane nabaqaphi benethiwekhi noma abathintekayo bepakethi njenge-Elethereal. Funda ukuthi yiluphi uhlobo lwengqondo olungaqondwa kwedatha ethunjiwe nokuthi ungayisebenzisa kanjani ukugcina inethiwekhi yakho isebenza kahle. Kodwa, futhi qaphela ukuthi abasebenzisi kwinethiwekhi yakho bangase basebenzise ama-packet ama-packet amahle, noma bazama ukufuna ukwazi noma ngenhloso enonya, nokuthi kufanele wenze konke ongakwenza ukuqinisekisa ukuthi lokhu akukwenzeki.