A firewall ndiyo mutsara wokudzivirira unodzivirira utanda hwako
Sezvaunodzidza zvakakosha zvemakombiyuta uye mumatare ekuchengeteka, iwe uchasangana nemashoko akawanda matsva: kuvhara , chikepe, Trojan , nevamwe. Firewall ishoko iro richaonekwa zvakare uye zvakare.
Chii Chinonzi Firewall?
A firewall ndiyo mutsara wekudzivirirwa kwewetaneti. Chinangwa chikuru chekudzivirira moto ndechekuchengeta vatenzi vasina kugamuchirwa kubva pakutsvaga network yako. Chiedza chekudzivirira moto chinogona kunge chiri chigadzirwa chemhare kana shanduro yepurogiramu iyo inowanzoiswa panzvimbo yakatarwa yekambani kuti iite semurindi wegedhi wevose inopinda uye inobuda.
Chiedza chekudzivirira moto chinokubvumira kuti uve nemimwe mitemo kuti uone mutengesi unofanirwa kubvumirwa mukati kana kunze kwehupfumi hwako. Zvichienderana nehuwandu hwechiedza chekudzidzira moto, unogona kudzivirira kukwanisa kune imwe chete IP mazita uye mazita emumunda kana iwe unogona kudzivisa dzimwe nzira dzomugwagwa nokuvhara TCP / IP ports dzavanoshandisa.
Ko Firewall Inoshanda Sei?
Pano pane nzira ina dzinoshandiswa nemapurogiramu ekudzivirira mitemo. Chimwe chigadziro kana kushandiswa kunogona kushandisa zvinopfuura imwe yeizvi kuti zvipe zvakadzivirirwa zvakadzika. Nzira idzi dzakakonzerwa nekuputika, gate-level gateway, proxy server, uye kushandiswa gateway.
Packet Filtering
Patikiti yepiritsi inobvumira zvose zvinotakura kusvika uye kubva kunhare uye dzinozviongorora zvichienderana nemitemo yaunopa. Kazhinji packet filter inogona kuongorora nzvimbo yeI IP kero, chiteshi chengarava, nzvimbo yekuenda yeIndaneti, uye nzvimbo yekuenda. Iyi ndiyo nzira iyo iwe unokwanisa kufuta kubvumira kana kubvisa chitima kubva kune dzimwe maIndaneti kana pane dzimwe nzvimbo.
Dhigirii-Nhamba Yedhizha
Gedhi-yepamusoro-gedhi rinopfigira zvose zvinopinda motokari kumunhu chero upi zvake asi iyo pachayo. Pakati pacho, iyo maklayini anoshandisa software inovabvumira kuti vatange kuwirirana neyedhi-gate gateway machine. Kunyika yekunze, zvinoita sekuti kutaurirana kwose kunobva mukati memukati menyu kunobva kuchipatara chemukova.
Proxy Server
A proxy server inowanzoiswa panzvimbo yekusimudzira kushanda kwenhare, asi inogona kuita sechigadzirwa chemoto. Proxy sevhisi vanovanza maateri enyu emukati kuitira kuti hutano wese huratidze hubva kune proxy server pachayo. A proxy server caches mapeji akambirwa. Kana Akashandisa A anoenda ku Yahoo.com, server yeproxy inotumira chikumbiro kuna Yahoo.com uye inowana peji yewebhu. Kana Kushandisa B ipapo inosanganisa ne Yahoo.com, server yeproxy inotumira zvese zvave zvadzorerwa zvakare kune User A saka zvinodzorerwa zvakanyanya kudarika kuitora kubva ku Yahoo.com zvakare. Iwe unokwanisa kugadzira proxy server kuti udzivise kuwana kune mamwe mawebhusayithi uye faira mamwe magwaro ekutakura kuti udzivirire mukati mako network.
Application Gateway
Chirongwa chekushandisa chinonyanya kuve chimwe chimiro cheproxy server. Mukati weklayiti anotanga kuumba kuwirirana nesango rekushandisa. Iko gedhi rekushandisa rinoratidza kana kuwirirana kunofanirwa kubvumidzwa kana kwete uye kusimbisa kuwirirana nekombiyuta inosvika. Zvose zvinotaurirana zvinowanikwa kuburikidza nehuviri hwekubatanidza-mutengi wekushandiswa kwesango uye kushandiswa kwesuwo kusvika kune imwe nzvimbo. Inoshandiswa gedhi rinotarisa zvose zvinotarisana nemitemo yacho isati yasarudza kana iri mberi. Sezvo kune imwe iyo proxy server marudzi, shandisi yesango ndiyo chete inotaridzirwa nekunze kwenyika kuitira kuti mukati memukati inodzivirirwa.
Cherechedza: Nyaya iyi yemhaka yakagadzirirwa naAndy O'Donnell