Yuav ua li cas yog lub active network khoom?

Tej niaj hnub tuam txhab (enterprise chaw ua hauj lwm lub tsev, Hoobkas, khw hauv internet it.d.) siv rau txoj haujlwm computer network. Qhov no yog vim lub fact tias thaum muaj ob los yog ntau tshaj computers li ntawd nws yog yooj yim mus rau kis tsim nyog cov ntaub ntawv ntawm pab kiag li lawm. Qhov no, ntawm chav kawm, assumes tswj ntawm lub system. Xws li ib tug lub luag hauj lwm muaj nuj nqi yuav siv sij hawm nyob rau hauv network khoom.

Yuav ua li cas hom ntawm cov khoom? Nws yog ib tug txheej ntawm pab kiag li lawm uas tsim nyog rau lub hauj lwm ntawm ib lub koom haum network. Qhov no muaj xws li routers, keyboards, hubs, thaj panels, thiab hais txog. Nyob rau hauv lem, cov pab kiag li lawm yog muab faib ua kom nquag plias thiab passive network khoom. Hnub no kuv xav qhia rau koj me ntsis txog thawj daim ntawv no.

Yog li, active network khoom - ib tug tshwj xeeb hluav taws xob uas muaj tej yam "ntse" zog. Feem ntau no muaj xws li routers (marshtutizatory) nrog keyboards.

Ib tug mus yog ib tug ntaus ntawv rau tes hauj lwm uas computers pauv cov ntaub ntawv nrog rau ib leeg. Lawv yog siv mus txuas rau sau network collisions, tab sis kuj yuav tiv thaiv kom txhob poob ntawm cov ntaub ntawv kis. Qhov no active network khoom yog ob qho tib si muaj kev tswj thiab unmanaged.

Unmanaged hauj lwm rau lub hauv paus ntsiab lus, uas tseem hu ua algorithm chaw nyob obsolescence. Qhov no ntaus ntawv muaj cov disadvantage uas tshwm sim los ntawm qhov tseeb hais tias lub tau txais qhov chaw nyob tuaj rau lawv, uas yog tsis muaj nyob rau hauv lub tsim nyog rooj, tus tes hloov qhov yog tsim los ntawm ib tug tshaj tawm hauv xov thov, ua rau ib tug restart ntawm ib tug kev sib txuas lus channel thiab raws li ib tug yuav tau txais ib tug nco nyob rau hauv network kev ua tau zoo. Thiab xws li ib tug network yog kiag li nti thaum lub sij hawm nrog tawm tsam.

Nrog hais txog kev tswj keyboards, lub network khoom yog nquag siv los ua rau kom cov kev ceev ntawm xa ntaub ntawv, raws li tau zoo raws li rau kev txhim kho network kev ua tau zoo. Nyob rau hauv lawv tswj network muaj ib theem siab ntawm kev tiv thaiv. Ntau ntau lub chaw ua hauj lwm siv cov thib ob theem ntawm lub network OSI qauv.

Routing keyboards twb ua hauj lwm nyob rau hauv lub thib peb theem axis. Qhov no ua rau nws tau siv rau lawv raws li cov tub ntxhais ntawm lub network. Nyob rau hauv tej lub sijhawm, cov pab kiag li lawm ib yam dab tsi yuav hloov tau routers.

Tam sim no wb tham txog dab tsi yog ib tug router. Nws yog ib qho active network ntaus ntawv uas ua hauj lwm nyob rau hauv lub thib peb OSI theem. Nws yog tsim los muab kev nkag tau rau lub ntiaj teb no network hauv zos thiab tsa ib lub muab faib enterprise network, uas muab kev nkag mus rau txhua tus neeg ua haujlwm cov ntaub ntawv uas lawv xav tau. Tsis tas li ntawd nws yuav siv tau los tsim kom muaj firewalls uas thaiv cov sab nraud network intrusion.

Tsis tau muaj kev kho vajtse cov ntxaij vab tshaus yog siv ntawm lub tes hauj lwm. Lawv hu ua firewall. Yog saab servers uas tus software yog ntsia (Operating System, Virtual Private Network thiab firewall). Lawv kuj muab network kev ruaj ntseg thiab txwv tsis pub nkag tau mus rau hauv Internet kev pab nrog ntshai heev txawm.