I-nslookup ithi iseva ayaziwa: kumane kuyilebula
Igama le-reverse likasombululi ngokwakhe kanye nokubheka phambili okuhlulekile kuyimiphumela ehlukene. Funda ingxenye yempendulo ngaphambi kokushintsha noma yisiphi isethingi se-DNS se-VPN.
Xhuma i-VPN, sebenzisa nslookup, futhi isihloko sikhombisa ikheli likasombululi nensimu yegama egcwele i-Unknown. Lelo gama lihleli phezu kwempendulo, futhi abantu abaningi bayeka ukufunda ngaphambi kwengxenye ebalulekile. Ilebula lichaza ukuthi usombululi unegama lesihlanu lakhe yini; alikasho lutho mayelana nokuthi igama lomsingathi olibuzile lixazululiwe yini. Ukuvala lelo windi kusenesikhathi yikhona konke ubuciko lapha.
Imibuzo emibili ehlukene ingaveza leso sibonisi, futhi eyodwa kuphela yayo ephathelene nenkinga yakho. Ukwehlukanisa kubo kudinga umyalo owengeziwe futhi kugcina intambama yokuhlela izethingi ze-DNS ezazingakaze zibe nephutha.
Ithuluzi lenzeni ngaphambi kokukuphendula
I-nslookup ingase izame ukuthola igama lekheli leseva ezosebenzisa, okuwukubheka kwesihlanu esizindeni se-in-addr.arpa noma i-ip6.arpa. Uma leyo rekhodi ye-PTR ingekho, ihlungiwe ngumgomo noma ingakashicilelwa, ithuluzi liphrinta i-Unknown bese liqhubeka. Ukuxazululwa phambili akuthinteki yilokho kwehluleka, ngoba umbuzo omunye lo othunyelwe kuleyo seva.
Yingakho usombululi wangasese engaphendula ngokulungile kuwo wonke amagama ebhizinisi futhi abonakale engaziwa esihlokweni sethuluzi. Ikheli liyaziwa; igama elingemuva kwalo alaziwa, futhi ithuluzi lithembekile ngalokho nakuba lihlala licishe lenze umdlalo ngegama elikhethayo.
Sebenzisa imibuzo yomibili ngamabomu
Buza ngomsingathi okhathalelayo, bese ubuza ngekheli likasombululi ngokwakhe. Isicelo sokuqala sithwala igama olidingayo; esesibili sibuza iseva ukuthi ingase ikwazi ukuzibiza. Uma sekubhalwe, zibukeka kanje: kumsingathi nslookup app.corp.example 10.77.0.53, futhi egameni le-reverse likasombululi nslookup 10.77.0.53 10.77.0.53.
Yomibili imizekelo ingeyokubonisa nje, ngakho faka amagama namakheli akho. Iphuzu akulona ukuhleleka kwemisho okuqondile kodwa ukwehlukanisa: imiyalo emibili ibuza imibuzo ehlukene futhi inganikeza imiphumela ehlukene ngaphandle kokuthi noma yimuphi ube yiphutha.
Imiphumela emithathu ebukeka ifana futhi engafani
Ukuphela kwesikhathi kusho ukuthi akukho mpendulo eyafika nhlobo, lokho okukhomba ekufinyelelekeni, ekuhlungweni noma ekhelini leseva elingalungile. Impendulo engemihle isho ukuthi iseva iphendule yathi igama alikho, lokho okukhomba esizindeni noma kusijobelelo. Igama le-reverse elingekho lisho ukuthi iseva yaphendula umbuzo wesibili ngaphandle kwento ewusizo, futhi impendulo yaphambili kungenzeka yayiphelele. Imiphumela emithathu, abanikazi abathathu, futhi munye kuphela kubo ophathelene negama lomsingathi obulidinga.
Yimibili yokuqala kuphela echaza indlela ye-DNS ehlulekayo kuhlelo lwakho lokusebenza. Eyesithathu ichaza irekhodi engakaze ishicilelwe, futhi ukuyithatha njengephutha kuholela ekushintsheni okungeke kuyilungise, njengokubhala kabusha isijobelelo sokusesha kuze kubukeke isihloko simnene.
Funda izigaba, hhayi isihloko
Ngaphansi kwesihloko, ithuluzi liphrinta impendulo, igunya nanoma yirekhodi eyengeziwe. Ikheli elilungile esigabeni sempendulo yiwo umphumela obuwufuna, ngisho nalapho igama esihlokweni lingu-Unknown. Impendulo engenalutho nokwenqatshwa okunegunya kungomunye umphumela futhi kufanele uphenywe ngokwayo.
Gcina izinto zombili zicacile kukho konke okuthumela kosekelo: yiliphi igama elibuziwe, futhi iyiphi iseva ebuziwe. Imibiko esho kuphela ukuthi i-DNS yephukile nge-VPN iphoqa umuntu olandelayo ukuthi akhe kabusha isivivinyo osuke wasenza.
Lapho igama le-reverse libaluleke ngempela
Ezinye izinsizakalo zikhathazeka ngempela ngamarekhodi e-PTR: ukuloga okuxazulula amakheli amaklayenti, ukuhlola isithunzi se-imeyili noma amathuluzi okuphatha akhombisa amagama. Uma okukodwa kwalokho kuhluleka, shicilela irekhodi noma lungisa isizinda okufanele sibe naso. Lowo msebenzi usemthethweni futhi wehlukile embuzweni wokuthi i-VPN idlulisa imibuzo ngendlela efanele yini.
Iphuzu elincanyana lihlala likhona: ilebula elilodwa likasombululi elingekho alikhombisi ukuthi ukuxazululwa phambili emhubheni kuphukile, futhi ukubheka phambili okukodwa okusebenzayo akukhombisi ukuthi wonke amagama esizindeni ayaxazululwa. Hlola igama olidinga ngempela, bese unquma ukuthi igama lesihloko lilingana nani.