Mhando dzeVPNs, Protocol, uye More
Virtual private network teknolojia inobva pane pfungwa yekugadzirisa. VPN tunneling inosanganisira kusimbisa nekuchengetedza kunzwisiswa kwehutano hwekubatanidza (iyo inogona kunge iine mazamu akafanana). Pamusoro pekubatana, mapaketi akavakwa mune imwe nzira yeVPN protocol yakaiswa mune imwe imwe nheyo kana kuti prototi yekutakura, uye inoparadzirwa pakati peVPN muteresi uye sevhare, uye pakupedzisira-yakaiswa mukati mekugamuchira.
Pamusoro peVInternet-based VPNs, mapetete mune rimwe remaitiro akawanda eVPN akaiswa mukati meInternet Protocol (IP) packets. VPN zvinyorwa zvinotsigirawo kuvimbiswa uye kuvhara kuti kuchengetedza tunnel kuchengeteka.
Mitauro yeVPN Tunneling
VPN inotsigira miviri miviri yekugadzirisa - kuzvipira uye inomanikidzwa. Mhando dzose dzekugadzirisa zvinowanzoshandiswa.
Mukuzvidira, muteereri weVPN anoronga kuiswa kwekugadzirisa. Mutengi anotanga kuyananisira kune anotakura network network (an ISP pane Internet VPNs). Zvadaro, shanduro yevashandi veVPN inogadzira nzira kumushandi weVPN pamusoro pehutano huno hupenyu.
Mukumanikidzwa kunomanikidzwa, mutakuri wekutengesa mitambo anotarisira VPN kuiswa kwekugadzirisa. Apo mutengi anotanga kuyanana kwechiremba kune anotakura, mutakuri wacho pakarepo anotengesa VPN kuwirirana pakati peyo muteresi uye VPN seva. Kubva pakatarisana nekambani yekuona, kuwirirana kweVPN kunogadzirirwa mune imwe nhanho imwe chete kana ichienzaniswa nemitoo miviri inotarisirwa kuti zviwanikwe nemaoko.
Mhosva yeVPN tunneling inotsigira vatengi uye inovabatanidza nemaseva eVPN chaiwo achishandisa manyorerwo akavakwa mujecha rekwereti. Iro network network device dzimwe nguva inonzi VPN Front End Processor (FEP), Network Access Server (NAS) kana Point of Presence Server (POS). Kumanikidzirwa kwekutengesa kunovanza tsanangudzo yeVPN sekubatanidza kubva kune vashandi veVPN uye inobudirira kutumira kutungamirirwa kwekutarisira pamusoro pematanho kubva kune vatengi kuenda kuIP. Mukudzoka, vateresi vebasa vanofanira kutora mutoro unowedzera wekuisa nekuchengetedza FEP zvigadzirwa.
VPN Tunneling Protocols
Mamwe mapurogiramu emakombiyuta emagetsi akashandiswa zvakananga kuti ashandiswe nematanho eVPN. Iro mitatu yakakurumbira yeVPN tunneling protocols yakanyorwa pasi ino inoramba ichikwikwidzana kune umwe kune kubvumirana mumhizha. Izvi zvinowanzosiyana.
Point-to-Point Tunneling Protocol (PPTP)
Makambani akawanda akashanda pamwe chete kuti atange zvinyorwa zvePPTP . Vanhu kazhinji vanobatanidza PPTP neMicrosoft nokuti zvinenge zvose zvinofadza zveWindows zvinosangirirwa mukati mekutsigirwa kwevatengi kune iyi protocol. Kubudiswa kwePPTP kweWindows kweMicrosoft kwakatanga zvinhu zvakachengeteka izvo dzimwe nyanzvi dzakati dzaive dzisina simba pakushandisa zvakanyanya. Microsoft inoramba ichivandudza rubatsiro rwayo rwePPTP, kunyange zvakadaro.
Chingaviri Tunneling Protocol (L2TP)
Mupikisi wepakutanga kuPPTP yeVPN tunneling aiva L2F, protocol yakatevedzwa zvikurukuru mumiti yeKisco. Mukuedza kuvandudza paL2F, zvakanakisisa zvayo uye PPTP zvakabatanidzwa kuti zvigadzire mutemo mutsva unonzi L2TP. Kufanana nePPTP, L2TP iripo pane data link layer (Layer Two) mumutambo weOSI - saka yakabva zita racho.
Internet Protocol Security (IPsec)
IPsec inowanzova musangano we multiple multiple related protocols. Inogona kushandiswa sechinhu chakakwana cheVPN protocol solution kana kungofanana nechokuita muchidimbu mukati meL2TP kana PPTP. IPsec iripo pa network network (Layer Three) yemuenzaniso weOSI.