Txhua yam koj yuav tsum paub txog network network servers
Ib tug neeg ua hauj lwm hauv DNS yog lub computer qhov chaw zov me nyuam uas muaj ib qho chaw ntawm IP chaw tus xov tooj thiab lawv cov hostnames , thiab feem ntau, ua hauj lwm pab daws, los yog txhais, cov npe nquag rau IP chaw nyob raws li tau thov.
DNS servers khiav tshwj xeeb software thiab sib txuas lus nrog sib siv tshwj xeeb cov kev cai.
Nyob rau hauv ntau yooj yim rau to taub cov ntsiab lus: ib tug DNS neeg rau zaub mov hauv internet yog lub cuab yeej uas translates tias www. koj ntaus hauv koj tus browser rau 151.101.129.121 IP chaw nyob uas nws yeej yog.
Lus Cim: Lwm lub npe rau DNS servers xws li npe neeg rau zaub mov, nameserver, thiab sau lub npe system neeg rau zaub mov.
Vim li cas peb puas muaj DNS servers?
Lo lus nug no tuaj yeem muab coj los teb nrog lwm lo lus nug: Puas yog yooj yim dua los nco ntsoov 151.101.129.121 lossis www. ? Peb feem coob yuav hais nws yooj yim dua kom nco tau ib lo lus zoo li es tsis txhob siv txoj hlua ntawm cov zauv.
Thaum koj nkag rau hauv www. rau hauv ib lub web browser, txhua yam koj yuav tsum to taub thiab nco qab yog qhov URL https: // www. . Tib yam muaj tseeb rau lwm lub website xws li Google.com , Amazon.com , thiab lwm yam.
Cov lus rov muaj tseeb, dhau li ntawd, thaum peb yog tib neeg nkag siab cov lus nyob hauv qhov URL yooj yim dua tus IP chaw nyob, lwm cov computers thiab network pab nkag siab txog qhov chaw tus IP.
Yog li no, peb muaj DNS servers vim peb tsis tsuas xav siv cov npe neeg nyeem ntawv mus nkag cov websites, tab sis cov computers yuav tsum siv tus IP chaw nkag mus rau cov websites. Cov DNS neeg rau zaub mov yog tias lub tshuab txhais lus ntawm hostname thiab IP chaw nyob.
Malware & amp; DNS Servers
Nws yog ib qho tseem ceeb uas yuav tsum tau khiav dej num antivirus . Vim li cas yog tias malware tuaj yeem tua koj lub computer rau hauv txoj kev uas pauv DNS cov chaw rau zaub mov, uas yog ib qho uas koj tsis xav kom tshwm sim.
Hais tias yog ib qho piv txwv tias koj lub kaspiv siv Google tus DNS servers 8.8.8.8 thiab 8.8.4.4 . Raws li cov DNS servers, nkag mus rau koj lub vev xaib lub txhab nyiaj nrog koj lub tsev txhab nyiaj URL yuav xa qhov website kom yog thiab qhia koj nkag mus rau koj tus account.
Txawm li cas los, yog tias tus malware hloov koj cov DNS neeg rau zaub mov nqis (uas yuav tshwm sim tom qhov scenes tsis muaj koj txoj kev paub), nkag mus rau tib lub URL yuav coj koj mus rau ib lub website txawv kiag li, los yog ntau qhov tseem ceeb, rau lub website uas zoo li koj lub txhab nyiaj hauv lub vev xaib tab sis tsis yog. Qhov chaw fake qhov chaw no yuav zoo ib yam nkaus li qhov tseeb, tiam sis tsis tso cai rau koj nkag mus rau hauv koj tus as khauj, nws tsuas sau koj tus username thiab password, muab cov lus qhia txhua yam uas lawv xav tau rau koj tus account hauv npav.
Feem ntau, txawm li cas los xij, malware uas yuav tua koj cov DNS servers feem ntau tsuas yog redirects nrov cov websites rau tag nrho cov kev tshaj tawm los yog fake kab mob cov websites uas ua rau koj xav hais tias koj yuav tsum yuav ib qho kev pab cuam los ntxuav ib lub computer muaj mob.
Muaj ob yam uas koj yuav tsum tau ua kom tsis txhob ua neeg tsim txom li no. Thawj yog mus nruab ib qhov kev pabcuam antivirus kom cov kev ua phem raug ntes ua ntej lawv tuaj yeem ua kev puas tsuaj. Qhov thib ob yog kom paub txog seb lub website zoo li cas. Yog hais tias nws yog me ntsis tawm ntawm qhov nws feem ntau zoo li los yog koj tau txais ib qho "tsis tseeb daim ntawv pov thawj" cov lus nyob rau hauv koj tus browser, nws yuav yog ib qho kos npe uas koj nyob rau hauv ib qho chaw imitation.
Xav paub ntxiv txog DNS Servers
Feem ntau, ob tug DNS servers, ib tug thawj thiab ib tug neeg ua hauj lwm theem siab, raug kho ntawm koj lub router thiab lub computer thaum txuas rau koj ISP ntawm DHCP . Koj tuaj yeem kho ob tug DNS servers nyob rau hauv cov ntaub ntawv ib tug ntawm lawv ua rau ploj, tom qab uas lub ntaus ntawv yuav siv los siv cov neeg rau zaub mov theem nrab.
Thaum muaj ntau tus DNS servers yog ua los ntawm ISPs thiab npaj siv tsuas yog los ntawm lawv cov neeg muas zaub, ob peb pej xeem-sawv daws yuav muaj. Pom peb Dawb & Nruab Nrab DNS Servers Sau rau ib daim ntawv teev tu-tshiab thiab Cas Kuv Hloov DNS Servers? yog tias koj xav tau kev pab ua qhov hloov.
Qee tus DNS servers yuav muab ceev sij hawm dua lwm leej lwm tus, tiam sis nws cia siab rau ib lub sijhawm ntev npaum li cas nws yuav siv koj lub tshuab kom mus txog rau DNS servers. Yog tias koj ISP tus DNS servers ze tshaj Google's, piv txwv li, ces koj yuav pom tau tias qhov chaw nyob yog kho sai siv cov pheej xaib ntawm koj ISP dua nrog ib tus neeg sab nraud neeg ua hauj lwm.
Yog tias koj tab tom ntsib teeb meem hauv network uas nws zoo li yog tias tsis muaj lub website yuav ntsaws, nws tau hais tias nws muaj ib qho teeb meem nrog cov DNS neeg rau zaub mov. Yog hais tias lub DNS neeg rau zaub mov tsis muaj peev xwm nrhiav qhov tseeb IP chaw uas yog txuam nrog hostname koj nkag, lub website yuav tsis thauj khoom. Ntxiv dua thiab, qhov no yog vim hais tias cov computers sib txuas lus ntawm IP chaw nyob thiab tsis hostnames-lub computer tsis paub tias koj tabtom sim mus txog tshwj tsis yog tias nws siv tau tus IP address.
Qhov DNS servers settings "ze tshaj" rau tus ntaus ntawv yog cov ua ntawv thov rau nws. Piv txwv, thaum koj ISP yuav siv ib txheej ntawm cov DNS servers uas siv rau tag nrho cov routers txuas nrog rau nws, koj lub router siv tau ntau txheej uas yuav siv cov DNS neeg rau zaub mov nqis rau txhua tus li txuas nrog lub router. Txawm li cas los xij, ib lub computer txuas nrog router siv tau nws tus kheej DNS cov chaw rau zaub mov rau kev tshaj tawm ntawm ob lub router thiab ISP; tib yam yuav hais tau rau ntsiav tshuaj , xov tooj, thiab lwm yam.
Peb piav saum toj no txog li cas kev pabcuam siab phem tuaj yeem tswj hwm koj cov neeg rau zaub mov hauv DNS thiab ua rau lawv nrog cov servers uas txuas koj lub website thov lwm qhov. Thaum no mas nws yeej yog ib qho uas ua rau cov neeg ua phem ua tau, nws tseem yog ib qho kev pom hauv qee cov kev pabcuam DNS xws li OpenDNS, tab sis nws siv rau txoj kev zoo. Piv txwv li, OpenDNS tuaj yeem txo cov laus neeg hauv tsev kawm ntawv, kev twv txiaj, cov websites sib txuas lus thiab ntau dua, mus rau nplooj ntawv "Blocked", tab sis koj tau ua tiav kev tswj xyuas cov redirects.
Nslookup hais kom ua yog siv los nug koj tus neeg siv DNS.
Pib los ntawm kev qhib qhov kev hais kom ua qhov cuab tam thiab tom qab ntawd:
nslookup... uas yuav tsum tau xa ib yam dab tsi zoo li no:
Lub Npe: Chaw Nyob: 151.101.193.121 151.101.65.121 151.101.1.121 151.101.129.121Hauv qhov ua piv txwv saum toj no, cov lus txib nslookup qhia koj tus IP address, los yog ntau tus IP chaw nyob rau hauv cov ntaub ntawv no, tias qhov chaw koj nkag mus rau hauv koj tus browser lub chaw tshawb nrhiav yuav txhais.
DNS Root Servers
Muaj ntau tus DNS servers nyob hauv kev twb kev txuas ntawm cov computers uas peb hu hauv internet. Tseem ceeb tshaj plaws yog 13 DNS root servers uas muab ib daim ntawv teev npe ntawm cov npe sau npe thiab lawv cov chaw tus IP chaw nyob.
Cov txheej txheem saum toj siab DNS yog hu ua A ntawm M rau thawj 13 cov tsiaj ntawv ntawm cov niam ntawv. Kaum ntawm cov servers yog nyob rau hauv Teb Chaws Asmeskas, ib qhov hauv London, ib qho nyob rau hauv Stockholm, thiab ib qho hauv Nyiv.
IANA ua cov npe ntawm cov npe DNS root servers yog koj xav tau.