Yog tsis muaj DNS servers, peb yuav tsis muaj peev xwm nthwv dej hauv internet zoo li peb ua txhua hnub, cov thev naus laus zis no tseem ceeb rau ntau dua 30 xyoo, tab sis tam sim no nws tau rov ua dua tshiab. Yog lawm, peb tab tom tham txog qhov tuaj txog ntawm EDNS tshiab txuas ntxiv uas "rejuvenates" lub tswv yim ntawm DNS.
Thaum peb ntaus lub vev xaib chaw nyob rau hauv qhov browser qhov URL bar, nws tsuas yog xa ib daim ntawv thov mus rau Is Taws Nem tus neeg teb xov tooj DNS (Domain Name System) server los daws qhov IP chaw nyob, uas tau muab rau lub npe sau npe.
EDNS thiab yuav ua li cas nws txhim kho DNS kom nrawm dua thiab nyab xeeb dua
Thaum tau txais IP (Internet Protocol) chaw nyob, lwm qhov kev thov raug xa mus rau IP (Internet Protocol) tsuas yog kom tau txais cov ntaub ntawv xav tau los xa cov nplooj ntawv web.
Txawm li cas los xij, kom kawm paub ntau ntxiv txog EDNS, peb yuav qhia koj tias EDNS yog dab tsi thiab nws yuav txhim kho DNS li cas, ua kom sai thiab nyab xeeb dua. Silent Revolution yuav txhim kho peb qhov kev tshawb nrhiav hauv internet niaj hnub yam tsis muaj peb txawm pom.
Internet Engineering Task Force (IETF) tau pom zoo ntev los txog ntawm RFC 6891 specification, lossis Extension Mechanisms for DNS (EDNS). Cov qauv no tau pib siv thaum Lub Ob Hlis 1, 2019. Thiab tsis tas li ntawd xwb, tab sis nws kuj tau qhia txog kev txhim kho ntau yam rau DNS lossis DNS uas twb muaj lawm.
EDNS yog dab tsi, thiab yuav ua li cas txhim kho DNS kom sai thiab nyab xeeb dua?
Lub DNS system yog lub luag haujlwm rau kev hloov chaw nyob lossis URLs uas peb nkag mus rau hauv qhov browser ntawm tus IP chaw nyob los tsim kev sib txuas. Txog thaum xyoo 1983, HOST tau siv, cov ntaub ntawv khaws tag nrho cov npe hauv Is Taws Nem, tab sis qhov no ua tsis tau vim muaj kev loj hlob ntawm Is Taws Nem.
Niaj hnub no, DNS extension systems tau los rau lub zog, ib qho kev tsim uas yuav ua rau DNS servers sai dua thiab ua tau zoo dua li yav dhau los. Tsis tsuas yog qhov no tuaj yeem hloov pauv tau yooj yim dua lossis txhim kho qhov nrawm uas lawv tau txhais, tab sis kev ntsuas kev nyab xeeb tuaj yeem suav nrog los tiv thaiv DDoS tawm tsam.
Nws tsis yog thawj zaug luam tawm DNS Extension System (EDNS), raws li thawj zaug tau luam tawm xyoo 1999 los ntawm Internet Engineering Task Force li RFC 2671. Txawm li cas los xij, qhov no twb tau tshaj tawm tias tsis siv lawm los ntawm RFC 6891 specification tshiab. Hmoov zoo, raws li cov neeg siv, koj tsis tas yuav txhawj xeeb txog dab tsi vim tias txhua qhov kev hloov pauv thiab kev txhim kho nyob ntawm cov tuam txhab muaj lub luag haujlwm rau DNS.
Txawm li cas los xij, peb yuav txuas ntxiv mus rau ib txwm thiab coj kom zoo dua ntawm kev txhim kho, uas qee zaum muab zais. Ua ke nrog cov tuam txhab, lawv yuav tsum tau xyuas seb lawv qhov system puas haum rau nws, thiab yog tias tsis yog, lawv yuav tau hloov kho rau cov qauv tshiab.
Ntxiv mus, cov lag luam loj hauv internet xws li Google, Cisco, CleanBrowsing, Cloudflare, Facebook, Internet Systems Consortium, PowerDNS thiab Quad9 twb tau hloov kho lawm. Zoo, koj xav li cas txog qhov no? Qhia tag nrho koj cov kev xav thiab kev xav hauv nqe lus hauv qab no. Thiab yog tias koj nyiam tsab xov xwm no, tsis txhob hnov qab qhia cov kab lus no rau koj cov phooj ywg thiab tsev neeg.
