I-VPN noma i-proxy: yini ngayinye ekumbozayo nengayikumbozi
I-VPN imboza ithrafikhi yezinhlelo ehambiswa ngomzila; i-proxy imboza kuphela uhlelo olulungiselelayo. Hlola ukumboza, ukubethela, i-DNS nokuziphatha lapho kwehluleka ngaphambi kokukhetha.
Kokubili i-VPN ne-proxy eya phambili kushintsha ikheli iwebhusayithi elibonayo, futhi yilapho ukuqhathanisa okuningi kuphela khona. Umehluko onquma ukusethwa kwakho ukumboza: i-proxy eya phambili ingumlamuli uhlelo lwakho oluzikhethela ukulusebenzisa, ngokungafani ne-proxy ehlanekezelwe emi phambi kwewebhusayithi, kuyilapho i-VPN ihambisa konke okuhambiswa uhlelo lokusebenza kungene emhubheni. Ukubethela, ukuphathwa kwe-DNS nokuziphatha lapho kwehluleka konke kuvela kulokho kwahlukanisa. Yenza lezi zivivinyo ezinhlanu ngokulandelana, futhi eyokuqala ehlulekayo izokutshela ukuthi iyiphi ithuluzi oyidingayo ngempela.
Umlamuli umboza izinhlelo eziyiphi?
Isengezo se-proxy kusiphequluli sisebenza kuphela kuleyophrofayili yesiphequluli. Amaklayenti e-imeyili, abaphathi bamaphakethe nesiphequluli sesibili baqhubeka nokusebenzisa izilungiselelo zabo, futhi ezinye izinhlelo ziyiziba ngokuphelele izinto eziguqukayo ze-proxy zohlelo. I-VPN imboza lokho okuthunyelwa ithebula lomzila emhubheni, futhi lokho kungaba yizinhlelo zonke noma ingxenye encane emhubheni ohlukanisiwe kuye ngemizila nenqubomgomo yeklayenti.
Hlola izinhlelo ezibalulekile esikhundleni sokwenza umbono jikelele kusukela ekulayisheni kwekhasi elilodwa. curl https://ifconfig.me ilandela izinto eziguqukayo ze-proxy zendawo; uhlelo lwediski kungenzeka lungazilandi. Ku-Windows, netsh winhttp show proxy iphrinta i-proxy ye-WinHTTP esetshenziswa izinsiza, futhi lokho kuyisilungiselelo esihlukile kwesase-siphequluli.
Ingabe ukugxuma kubethelwe, futhi i-TLS iphela kuphi?
Iphrothokholi ye-proxy iyindawo yokuhlangana, hhayi isiqinisekiso. I-SOCKS5 idlulisa i-TCP ngaphandle kokuyibethela, futhi i-proxy ye-HTTP elula ithwala umugqa wesicelo nezihloko ngombhalo osobala. I-HTTPS nge-proxy isebenzisa CONNECT, ngakho iseshini yakho ye-TLS isaphela endaweni ekuyiwa kuyo, hhayi ku-proxy. Umhlahlandlela we-MDN mayelana namaseva e-proxy nokuhamba emhubheni uchaza lowo mehluko ngasohlangothini lwephrothokholi.
I-VPN ibethela ingxenye ephakathi kwedivayisi yakho nendawo yayo yokugcina. Ngale kwendawo yokugcina kusebenza imithetho efanayo nakuya kunoma iyiphi enye inethiwekhi, yingakho umhubhe uwodwa ungeviki uhlelo oluthumela ubufakazi nge-HTTP elula. Akukho kokubili kwalezi zakhiwo okufihla i-akhawunti engene, ikhukhi noma uphawu lweminwe lwesiphequluli.
curl -v -x http://127.0.0.1:3128 https://example.com/ -o /dev/null
curl -v -x socks5h://127.0.0.1:1080 https://example.com/ -o /dev/nullUmphumela onemininingwane ukhombisa ukuthi i-curl ithumele CONNECT kuphothi 443 noma GET elula nge-URL ephelele. Nge-socks5h:// igama lomsingathi linikezwa i-proxy ngaphakathi kwesicelo se-SOCKS5 bese idlulisa i-TLS engakwazi ukuyifunda, ngakho ibona igama nenani lamabhayithi. Nge-proxy ye-http://, i-URL ye-https:// iyi-CONNECT, ngakho naleyo proxy ibona igama nomthamo wendawo ekuyiwa kuyo, hhayi isicelo noma umzimba wempendulo.
Iyiphi isixazululi esibona igama?
Ukuxazululwa kwamagama kungenzeka endaweni ngaphambi kokuba isicelo siphume, noma kude ku-proxy. Nge-curl, i-socks5h:// ithumela igama lomsingathi ku-proxy kuyilapho i-socks5:// ilixazulula endaweni kuqala. Izilungiselelo ze-proxy zesiphequluli zinikeza inketho ye-DNS efanayo, futhi amafayela e-PAC angahambisa imisingathi ehlukene ngezindlela ezihlukene.
Amaphrothokholi amabili angadlula i-proxy ngaphandle kwanoma yikuphi ukulungiswa okungalungile. I-WebRTC iqoqa abazongenela nge-STUN, futhi i-QUIC isebenzisa i-HTTP/3 ku-UDP, okungeke kuyithwale i-proxy ye-TCP. Isiphequluli sizobuyela ku-TCP uma i-UDP 443 ivaliwe, ngakho ukuvala i-UDP 443 kufayela lomlilo lomsingathi (noma kurutha yonke inethiwekhi), hhayi ifulegi lesiphequluli, iyona ndlela ethembekile yokugcina i-HTTP/3 emzileni we-proxy.
Hlola isixazululi ngombono wendawo ekuyiwa kuyo, hhayi wekhompyutha yakho ephathwayo. Isicelo esifika nekheli lokuphuma le-proxy kodwa igama elixazululwe endaweni sisatshela isixazululi sasendaweni ukuthi yimaphi amasayithi owavakashelayo.
Kwenzekani lapho umlamuli wehluleka?
I-proxy ecacile yehluleka ivaliwe: misa inqubo ye-proxy futhi isiphequluli noma uhlelo lubuyisela iphutha lokuxhumeka esikhundleni sokuya ngqo. Izilungiselelo ze-PAC ne-WPAD yizo ezehluleka zivulekile - uma iskripthi singatholakali, iklayenti libuyela ku-DIRECT futhi isayithi libona ikheli lakho langempela futhi. I-VPN ingehluleka ivulekile noma ivaliwe kuye ngeklayenti nokuthi iswishi yokucisha noma umthetho womlilo uyasebenza yini.
Hlola icala lokwehluleka ngamabomu: misa insiza ye-proxy bese ulayisha kabusha; uma uthola ikhasi lephutha esikhundleni sokulayishwa ngqo, khomba i-URL ye-PAC kumsingathi ongafinyeleleki ukuze ubone ukubuyela emuva. Uma ikhasi lisalayishwa ngomzila wakho ojwayelekile, i-proxy ayinikezi isivikelo kunoma yikuphi ukuphazamiseka kwayo, futhi lokho kuyisici okufanele ukwazi ngaphambi kokuyethemba.
Ukulandelana kunquma lokho isayithi elikubonayo. I-proxy okuhamba ngayo okokuphuma kudlula ku-VPN ishiya isayithi sibona ikheli lendawo yokugcina ye-VPN; beka i-proxy ngaphandle komhubhe (i-VPN eya ku-proxy kumsingathi okude) futhi isayithi sizobona ikheli lokuphuma laleyo proxy esikhundleni salokho. Noma kukuphi, ukugxuma okubili kungabhala izinto ezihlukene.
Izivivinyo ezinhlanu, ngokulandelana
Uhlu lokuhlola olungezansi yisona sinqumo sonke endaweni eyodwa. Ukumboza kuza kuqala ngoba kususa ukungafani okuningi: uma uhlelo okufanele lumbozwe lungayihloniphi isilungiselelo, akukho okunye ohlwini okungalusindisa.
| Check | Forward proxy | VPN |
|---|---|---|
| What is covered | The app or browser you configure | Traffic the OS routes into the tunnel, all or split |
| Encryption scope | Protocol-dependent; SOCKS5 alone encrypts nothing | Device to VPN endpoint |
| DNS path | Local or remote, depending on the setting | Normally inside the tunnel |
| Failure mode | Explicit config: connection error; PAC/WPAD: DIRECT fallback | Client policy: fail-open or kill switch |
| What the site sees | The proxy's exit address | The VPN endpoint's exit address |
Bese uqinisekisa umphumela ngohlelo oludale ushintsho. Layisha ikhasi kusiphequluli esilungisiwe, thola lelo khasi nge-curl, futhi uqhathanise ikheli elibikwa yilowo nalowo. Uma zingavumelani, isengezo, umthetho we-PAC noma ukushintshwa kwezinga lohlelo kusasebenza, futhi akukho kulungiswa komhubhe okuzokulungisa.
Bhala phansi okulungise, okungukuthi yiziphi izinhlelo ezisebenzisa i-proxy, i-DNS ingeyasekhaya noma eyakude, i-UDP ivaliwe yini, futhi kuyini ukuziphatha lapho kwehluleka. Lolo hlu oluncane luyenza kwenzeke ukuqhathanisa okulandelayo, ngoba “i-IP ishintshile” akukaze kukutshele ukuthi iyiphi yalezi zivivinyo ezinhlanu ephumelele.