Introduction to Business Computer Networks

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Introduction to Business Computer Networks
Introduction to Business Computer Networks
Anonim

Ib yam li ntau tsev neeg nyob hauv tsev siv lub khoos phis tawj hauv tsev, cov tuam txhab thiab cov lag luam ntawm txhua qhov ntau thiab tsawg tau tso siab rau cov tes hauj lwm los txhawb nqa lawv cov haujlwm niaj hnub. Cov chaw nyob thiab kev lag luam sib txuas siv ntau yam ntawm tib lub hauv paus technologies. Txawm li cas los xij, kev lag luam tes hauj lwm (tshwj xeeb yog cov uas pom hauv cov tuam txhab loj) suav nrog cov yam ntxwv ntxiv, kev ruaj ntseg tsis zoo, thiab cov kev cai siv.

Kev Lag Luam Network Tsim

chaw ua haujlwm me me thiab chaw ua haujlwm hauv tsev (SOHO) tes hauj lwm ib txwm ua haujlwm nrog ib lossis ob lub network hauv zos (LANs), txhua tus tswj los ntawm nws lub network router. Cov no phim cov qauv tsim hauv tsev.

Raws li kev lag luam loj hlob, lawv cov kev teeb tsa hauv network nthuav dav mus rau ntau dua ntawm LANs. Cov tuam txhab lag luam nyob hauv ntau dua ib qho chaw teeb tsa kev sib txuas sab hauv nruab nrab ntawm lawv cov tsev ua haujlwm. Qhov kev sib txuas no yog hu ua lub network hauv tsev kawm ntawv thaum cov tsev nyob ze, lossis thaj chaw dav dav (WAN) thaum hla lub nroog lossis lub tebchaws.

Lub tuam txhab ua kom lawv cov kev sib txuas hauv zos rau Wi-Fi lossis wireless nkag. Txawm li cas los xij, cov lag luam loj dua feem ntau xaim lawv lub tsev ua haujlwm nrog kev kub ceev Ethernet cabling kom muaj peev xwm ntau dua thiab ua haujlwm tau zoo.

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Kev Lag Luam Network Nta

Kev lag luam tes hauj lwm yuav ntiav ntau yam kev ruaj ntseg thiab kev siv cov yam ntxwv los tswj xyuas seb cov neeg siv nkag mus rau hauv lub network li cas.

Network Lim

Feem ntau cov tuam txhab tso cai rau lawv cov neeg ua haujlwm nkag mus rau hauv internet los ntawm sab hauv lub lag luam network. Qee qhov teeb tsa hauv internet cov ntsiab lus filtering thev naus laus zis los thaiv kev nkag mus rau qee lub vev xaib lossis thaj chaw. Cov tshuab lim dej no siv cov ntaub ntawv tsim nyog ntawm cov npe hauv internet (xws li cov neeg laus lossis cov vev xaib twv txiaj), chaw nyob, thiab cov ntsiab lus tseem ceeb uas ua txhaum lub tuam txhab txoj cai siv tau.

Qee lub tsev network routers kuj txhawb cov ntsiab lus hauv internet lim cov yam ntxwv los ntawm kev tshuaj ntsuam xyuas. Cov tuam txhab lag luam nyiam siv cov kev daws teeb meem uas muaj zog thiab kim dua.

Virtual Private Networks

Kev lag luam qee zaum tso cai rau cov neeg ua haujlwm nkag rau hauv lub tuam txhab network ntawm lawv lub tsev lossis lwm qhov chaw sab nraud, lub peev xwm hu ua kev nkag mus rau thaj chaw deb. Ib lub lag luam tuaj yeem teeb tsa virtual private network (VPN) servers los txhawb kev nkag mus rau tej thaj chaw deb, nrog cov neeg ua haujlwm cov khoos phis tawj tau teeb tsa kom siv cov software sib xws VPN tus neeg siv khoom thiab chaw ruaj ntseg.

Upload nqi

Piv rau hauv tsev network, kev lag luam network xa tawm (upload) ntau dua cov ntaub ntawv thoob plaws hauv internet. Cov ntim no yog los ntawm kev lag luam hauv tuam txhab lub vev xaib, email, thiab lwm yam ntaub ntawv luam tawm sab nraud. Cov kev pabcuam hauv internet nyob hauv cov phiaj xwm muab cov neeg siv khoom nrog cov ntaub ntawv ntau dua rau kev rub tawm rov qab rau tus nqi qis dua ntawm uploads. Cov phiaj xwm kev lag luam hauv internet tso cai rau upload ntau dua vim li no.

Intranets thiab Extranets

Lub tuam txhab teeb tsa lub vev xaib sab hauv los qhia cov ntaub ntawv lag luam ntiag tug rau cov neeg ua haujlwm. Lawv kuj tseem tuaj yeem xa email sab hauv, xa xov sai, thiab lwm yam kev sib txuas lus ntiag tug. Ua ke cov tshuab no ua rau kev lag luam intranet. Tsis zoo li internet email, IM, thiab cov kev pabcuam hauv web uas muaj rau pej xeem, cov kev pabcuam intranet tuaj yeem nkag tau los ntawm cov neeg ua haujlwm uas nkag mus rau hauv lub network.

Cov kev lag luam qib siab tseem tso cai rau qee cov ntaub ntawv tswj tau sib koom ntawm cov tuam txhab. Qee lub sij hawm hu ua extranets lossis kev lag luam-rau-kev lag luam tes hauj lwm, cov kev sib txuas lus no koom nrog kev nkag mus rau tej thaj chaw deb lossis cov vev xaib tiv thaiv kev nkag mus.

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Kev Lag Luam Network Security

Lub tuam txhab muaj cov ntaub ntawv ntiag tug tseem ceeb, ua rau kev ruaj ntseg network yog qhov tseem ceeb. Cov lag luam uas paub txog kev ruaj ntseg feem ntau siv cov kev ntsuas ntxiv los tiv thaiv lawv cov tes hauj lwm tshaj li qhov tib neeg ua rau lawv lub tsev network.

Centralized Security

Txhawm rau tiv thaiv cov cuab yeej tsis raug tso cai los ntawm kev koom nrog kev lag luam, cov tuam txhab lag luam ntiav cov kev ruaj ntseg hauv nruab nrab. Cov cuab yeej no xav kom cov neeg siv ua pov thawj los ntawm kev nkag mus rau cov passwords uas raug kuaj tawm tsam lub network directory. Cov cuab yeej no kuj tshawb xyuas lub cuab yeej kho vajtse thiab software teeb tsa kom paub tseeb tias nws tau tso cai koom nrog lub network.

Password Management

Cov neeg ua haujlwm hauv tuam txhab tuaj yeem xaiv qhov tsis zoo hauv lawv txoj kev siv tus password. Piv txwv li, lawv yuav siv tau yooj yim hacked npe xws li password1 thiab txais tos. Txhawm rau tiv thaiv kev lag luam network, cov tuam txhab IT cov thawj coj teeb tsa cov cai password uas txhua lub cuab yeej koom nrog nws yuav tsum ua raws. Lawv kuj tseem tuaj yeem teeb tsa lub network passwords ntawm cov neeg ua haujlwm kom tas sij hawm, yuam kom lawv hloov, uas yog tsim los txhim kho kev ruaj ntseg.

Guest Networks

Cov thawj coj qee zaum teeb tsa cov qhua tuaj noj mov rau cov qhua siv. Guest networks muab cov qhua nkag mus rau hauv is taws nem thiab qee cov ntaub ntawv tseem ceeb hauv tuam txhab yam tsis pub kev sib txuas rau cov tuam txhab tseem ceeb lossis lwm cov ntaub ntawv tiv thaiv.

Backup Systems thiab VPNs

Cov lag luam tsim cov tshuab ntxiv los txhim kho lawv cov ntaub ntawv kev ruaj ntseg. Network backup systems tsis tu ncua ntes thiab khaws cov ntaub ntawv tseem ceeb ntawm kev lag luam los ntawm tuam txhab khoom siv thiab servers. Qee lub tuam txhab xav kom cov neeg ua haujlwm teeb tsa kev sib txuas VPN thaum siv cov kev sib txuas hauv Wi-Fi, tiv thaiv cov ntaub ntawv raug snooped saum huab cua.

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