VPNs, lossis virtual private networks, yog siv los muab cov kev sib txuas ruaj khov rau cov koom haum koom tes lossis muab kev nkag mus rau Is Taws Nem. Cov tes hauj lwm no muaj kev nyab xeeb heev, vim txhua qhov kev nkag mus sab hauv lawv yog encrypted.
Hauv Lus Askiv, VPN sawv rau Virtual Private Network. Lo lus no tau muab txhais ua lus Lavxias ua "virtual private network".
VPN yog dab tsi
VPN yog lub thev naus laus zis uas tso cai rau ib qho cuab yeej sib txuas tau txuas rau saum lwm. VPN tuaj yeem ua haujlwm nyob rau ntau hom - "site-to-site", "site-to-site" lossis "site-to-site". Feem ntau, VPNs tau siv ntawm cov txheej txheej network, tso cai siv raws li UDP lossis TCP siv. Cov ntaub ntawv sib pauv nruab nrab ntawm cov khoos phis tawj txuas nrog lub VPN yog qhov hloov tawm.
Feem ntau, VPN siv ob ntu khoom - nws tus kheej lub network sab hauv thiab sab nraud network, uas yog siv hauv Is Taws Nem. Txhawm rau txuas cov neeg siv rau tej thaj chaw deb mus rau lub network virtual, ib tus neeg nkag mus siv tau, uas yog tib lub sijhawm txuas ob lub network sab nraud thiab lub network sab hauv. Tus txheej txheem heev ntawm kev txuas mus rau VPN tau ua tiav siv cov cim kev paub thiab cov neeg siv tom qab lees paub.
Cov hom ntawm virtual sib txuas
Virtual ntiag tug sib koom tes tau cais ua ob peb hom: los ntawm lub hom phiaj, los ntawm cov txheej txheem ntawm kev siv, los ntawm qhov kev nyab xeeb, los ntawm cov txheej txheem siv thiab los ntawm theem kev ua haujlwm hauv kev sib raug zoo nrog cov qauv ISO / OSI.
Nyob ntawm seb qib kev nyab xeeb, VPNs tuaj yeem ntseeg tau lossis ruaj ntseg. OpenVPN, PPTP lossis IPSec thev naus laus zis tau siv los tswj kom muaj kev nyab xeeb ntiag tug virtual network. Lawv tso cai rau koj los muab cov kev sib txuas zoo txawm tias qhov tsis muaj kev ntseeg siab (piv txwv li, Is Taws Nem). Ntseeg VPNs tau siv thaum lub network nws tus kheej twb muaj kev ruaj ntseg txaus.
Ua raws li cov txheej txheem siv, VPNs tuaj yeem teeb tsa siv cov software tshwj xeeb, siv cov khoom siv software-software lossis cov kev daws teeb meem.
Virtual ntiav ntiag tug tuaj yeem ua haujlwm sib txawv. Intranet VPNs tau siv thaum nws tsim nyog los txuas ob peb lub khoos phis tawm ntawm tib lub koom haum rau hauv kev ruaj ntseg network. Tes hauj lwm zoo li Cov Chaw Nkag Chaw Nkag Nkag tau siv VPN los tsim cov kev sib txuas lus ruaj ntseg ntawm ib tus neeg siv thiab ntu ntawm kev koom tes network. Cov koom tes ntiag tug ntawm chav kawm Extranet VPN tau siv los muab kev sib txuas rau "sab nraud" cov neeg siv (cov koom haum cov neeg siv khoom, cov neeg siv khoom, thiab lwm yam). Txhawm rau txuas cov neeg siv nrog ADSL modems rau hauv Is Taws Nem, cov muab kev pabcuam siv cov koom tes xws li Internet VPN. Cov neeg siv khoom / Cov neeg rau zaub mov VPN chav kawm sib txuas tau siv thaum nws tsim nyog los npaj cov kev sib txuas lus ruaj ntseg ntawm ob qho ntawm kev sib koom tes.
