Kev saib xyuas ntawm txhua lub computer network, kev ruaj ntseg yog qhov tshwj xeeb tshaj yog rau Wi-Fi wireless networks. Hackers tau yooj yim cuam tshuam wireless network tsheb hla qhib cua txuas thiab rho cov ntaub ntawv xws li passwords thiab credit card numbers. Ob peb Wi-nkaus network ruaj ntseg technologies tau tsim los tiv thaiv hackers, ntawm chav kawm, tab sis ib txhia ntawm cov technologies yuav ua tau yooj yim kuj yooj yim.
Network Data Encryption
Kev ruaj ntseg hauv kev network feem ntau siv encryption tshuab. Encryption cov ntaub ntawv xa tawm cov kev sib txuas sib txuas lus sib tham los zais cov ntaub ntawv los ntawm tib neeg thaum tseem tso cai rau computer kom kho cov lus. Muaj ntau hom kev siv tshuab encryption nyob hauv kev lag luam.
Network Authentication
Cov cuab yeej tshawb xyuas kev siv computer rau kev siv computer pom tseeb tias yog leej twg ntawm cov khoom siv thiab cov neeg. Network operating systems zoo li Microsoft Windows thiab Kua OS-X muaj xws li built-in authentication yug raws li tus neeg siv cov npe thiab passwords. Cov neeg teb xov tooj hauv tsev tseem xyuas cov thawj coj los ntawm kev yuam kom lawv nkag mus rau lwm tus ntawv peev xwm.
Ad Hoc Wi-nkaus Network Security
Tsoos Wi-nkaus network txuas sib txuas los ntawm lub router lossis lwm qhov chaw nkag. Xwb, WI-Fi txhawb ib hom hu ua ad hoc wireless uas tso cai rau siv sib txuas ncaj qha rau txhua tus neeg nyob rau hauv ib tug neeg ua hauj lwm los ua phooj ywg. Tsis muaj taw tes rau qhov chaw nruab nrab, kev ruaj ntseg ntawm ad hoc Wi-Fi sib txuas nyhav heev. Qee cov kws tshaj lij kev quab yuam kev siv cov lus qhia ntawm Wi-Fi vim li no.
Cov Qauv Kev Ruaj Ntseg Ntawm WI-Fi
Feem ntau cov cuab yeej siv Wi-Fi xws li khoos phis tawj, routers, thiab cov xov tooj txhawb nqa ntau yam kev ruaj ntseg. Cov hom kev ruaj ntseg thiab txawm tias lawv cov npe sib txawv li ntawm cov cuab yeej ua haujlwm.
WEP sawv cev rau Txoj Cai Sib Tw Sib Npaug. Nws yog thawj wireless ruaj ntseg qauv rau Wi-nkaus thiab tseem niaj hnub siv hauv tsev computer hauv tsev. Qee cov cuab yeej txhawb ntau hom versions ntawm WEP kev ruaj ntseg
- WEP-64-ntsis tseem ceeb (qee zaus hu ua WEP-40)
- WEP 128-ntsis yuam sij (qee zaus hu ua WEP-104)
- WEP 256-ntsis qhov tseem ceeb
thiab cia tus thawj coj xaiv ib qho, thaum lwm cov khoom siv tsuas yog ib qho kev xaiv WEP nkaus xwb. WEP yuav tsum tsis txhob siv tsuas yog thaum lub caij nyoog kawg nkaus, raws li nws muaj kev tiv thaiv tsis zoo.
WPA sawv cev rau Wi-nkaus Tivthaiv Saib Xyuas. Tus qauv no yog tsim los hloov WEP. Wi-nkaus cuab yeej pab txhawb ntau hom kev hloov ntawm WPA. Traditional WPA, tseem hu ua WPA-Personal thiab qee zaum kuj hu ua WPA-PSK (rau qhov tseem ceeb sib koom ua ke), yog tsim los rau kev sib koom tes hauv tsev thaum lwm qhov version, WPA-Enterprise, yog tsim rau cov tuam txhab haujlwm. WPA2 yog ib qho kev txhim kho ntawm Wi-nkaus Protected Access uas tau txais los ntawm txhua yam khoom siv tshiab Wi-Fi. Zoo li WPA, WPA2 kuj muaj nyob hauv Cov Ntaub Ntawv Qee tus / PSK thiab Enterprise.
802.1X muab network authentication rau Wi-nkaus thiab lwm hom tes hauj lwm. Nws nyhav siv los ntawm cov lag luam loj vim tias qhov technology no yuav tsum muaj kev tshaj lij ntxiv rau kev teeb tsa thiab tswj. 802.1X ua haujlwm nrog Wi-nkaus thiab lwm hom tes hauj lwm. Hauv kev sib tham ntawm Wi-nkaus, cov neeg khiav dej num feem ntau sib txuas nrog 802.1X authentication ua haujlwm nrog WPA / WPA2-Enterprise encryption.
802.1X kuj raug hu ua RADIUS .
Network Security Sij Hawm thiab Passphrases
WEP thiab WPA / WPA2 siv cov ntaub thaiv wireless encryption , ntev sequences ntawm cov zauv hexadecimal . Sib piv cov ntsiab lus tseem ceeb yuav tsum nkag mus rau hauv Wi-nkaus router (los yog cov chaw nkag mus) thiab tag nrho cov neeg siv khoom uas xav koom nrog lub network. Nyob hauv kev ruaj ntseg hauv network, lub sij hawm passphrase tuaj yeem xa mus rau daim ntawv yooj yim ntawm qhov kev yuam kev encryption uas tsuas yog siv cov cim alphanumeric es tsis txhob hexadecimal qhov tseem ceeb. Txawm li cas los xij, cov nqe lus tseem ceeb thiab qhov tseem ceeb feem ntau siv sib pauv.
Configuring Wi-nkaus Security nyob rau hauv Tsev tes hauj lwm
Tag nrho cov khoom siv nyob rau ntawm qhov muab Wi-nkaus network yuav tsum siv sib piv kev ruaj ntseg. Nyob rau hauv Windows 7 PCs, cov nram qab no qhov tseem ceeb yuav tsum tau sau rau ntawm Security tab ntawm Wireless Network Khoom rau ib qho kev sib txuas network:
- Kev ruaj ntseg hom yog hais txog kev xaiv authentication nrog Qhib, Sib koom, WPA-Personal thiab -Cov neeg, WPA2-Personal thiab -Enterprise, thiab 802.1X. Qhov qhib xaiv siv tsis tau authentication, thaum sib koom siv WEP rau authentication.
- Kev xaiv Encryption muaj nyob ntawm seb Hom Kev Xaiv Xaiv. Dhau li Tsis yog, uas tsuas siv tau nrog cov tes hauj lwm qhib , WEP kev xaiv yuav siv nrog WEP los yog 802.1X authentication. Ob qho kev xaiv, hu ua TKIP thiab AES, xa mus rau cov technology tshwj xeeb encryption usable nrog WPA tsev neeg ntawm Wi-Fi kev ruaj ntseg qauv.
- Ib qho tseem ceeb encryption los yog passphrase tau teev nyob rau hauv Network Security qhov tseem ceeb teb thaum yuav tsum tau ua.
- Qhov tseem ceeb ntawm qhov tseem ceeb , tus nqi ntawm 1 thiab 4, yog hais txog txoj hauj lwm ntawm qhov tseem ceeb muab khaws cia rau hauv lub wireless router (nkag kis). Muaj ntau tus neeg siv lub tsev tso cai rau plaub tus passwords sib txawv ntawm tus lej 1 txog 4 kom tau teeb tsa kom tau cov neeg pab legitimate tsis yuam lawv rau txhua tus siv qhov tseem ceeb.