Menene Tacewar zaɓi kuma menene nau'ikan sa?
A cikin wannan labarin, zamu koya tare game da menene Firewall kuma menene nau'ikan firewall daki -daki.
Na farko, menene Firewall?
Tacewar wuta wata na’urar tsaro ce ta cibiyar sadarwa da ke lura da kwararar bayanai zuwa da daga kwamfutarka a duk cibiyoyin sadarwar da aka haɗa ta, ta ba da izini ko toshe zirga -zirgar shiga da fita bisa la’akari da wasu ƙa’idojin tsaro da aka riga aka ayyana.
Manufarta, ba shakka, ita ce ƙirƙirar shinge tsakanin kwamfutarka ko cibiyar sadarwar cikin gida da cibiyar sadarwa ta waje wacce aka haɗa ta, a ƙoƙarin hana motsi na bayanai masu cutarwa kamar ƙwayoyin cuta ko hare -haren hacking.
Ta yaya Tacewar zaɓi yake aiki?
Inda firewalls ke nazarin bayanai masu shigowa da masu fita bisa ƙa'idojin da aka riga aka tsara, tace bayanai da ke fitowa daga wuraren da ba su da haɗari ko kuma waɗanda ake tuhuma, hana yiwuwar kai hari kan kwamfutarka ko kwamfutocin da ke da alaƙa da cibiyar sadarwarka ta ciki, wato, suna aiki a matsayin masu tsaro a wuraren haɗin kwamfuta, waɗannan wuraren da aka sanya wa suna tashoshin jiragen ruwa, inda ake musayar bayanai tare da na'urorin waje.
Wadanne nau'ikan Tacewar zaɓi?
Firewalls na iya zama ko dai software ko hardware, kuma a zahiri, yana da kyau a sami nau'ikan iri biyu.
Shirye -shirye ne waɗanda aka girka a kan kowace kwamfuta don yin aikinsu wajen daidaita zirga -zirgar bayanai ta tashoshin jiragen ruwa da aikace -aikace.
Ganin cewa, firewalls na kayan aiki kayan aiki ne na zahiri da aka sanya tsakanin cibiyar sadarwa ta waje da kwamfutarka da aka haɗa ku, wato, suna wakiltar mahaɗin tsakanin kwamfutarka da cibiyar sadarwar waje.
Firewalls na nau'in Packet_Filtering.
Mafi yawan nau'ikan firewalls,
Yana bincika fakiti na bayanai kuma yana toshe hanyar wucewarsu idan ba su dace da ƙa'idodin tsaro da aka lissafa a baya ba. Wannan nau'in yana bincika tushen fakitin bayanai da adiresoshin IP na na'urorin da suka bayar, don tsarin daidaitawa da aka ce.
Gidan wuta na ƙarni na biyu
((Firewalls na ƙarni na gaba (NGFW))
Ya haɗa a cikin ƙirarsa fasahar fasahar kashe wuta ta gargajiya, ban da wasu ayyuka kamar ɓoyayyen ɓoyayyen ɓoyayyiyar ɓarna, tsarin rigakafin kutse, tsarin rigakafin ƙwayoyin cuta, kuma yana da fasalin duba fakitin DPI mai zurfi. Na biyu (NGFW) yana da DPI don bincika daidai da bincika bayanan da ke cikin fakiti, yana bawa mai amfani damar ganowa da gano fakitoci masu haɗari.
Firewalls na wakili
(Wurin kashe wuta na wakili)
Wannan nau'in Tacewar zaɓi yana aiki a matakin aikace -aikacen, sabanin sauran firewalls, yana aiki azaman mai shiga tsakani tsakanin ƙarshen tsarin guda biyu, inda abokin cinikin da ke goyan bayansa dole ne ya aika da buƙatuwa zuwa firewall na wannan nau'in don a kimanta shi akan saiti na dokokin tsaro don ba da izini ko hana bayanan da aka aika don kimantawa. Abin da ya bambanta wannan nau'in shine cewa yana kula da zirga-zirgar ababen hawa gwargwadon abin da ake kira ladabi na XNUMX kamar HTTP da FTP, kuma yana da fasalin duba fakiti mai zurfi na DPI da fasahohi na hukuma ko na jihohi.
Translation Fassarar adireshin cibiyar sadarwa (NAT)
Waɗannan firewalls suna ba da damar na'urori da yawa tare da adiresoshin IP daban -daban don haɗawa tare zuwa cibiyoyin sadarwa na waje tare da adireshin IP guda ɗaya, don haka masu kai hari, waɗanda ke dogaro da binciken cibiyar sadarwa akan adiresoshin IP, ba za su iya samun takamaiman bayanai game da na'urorin da ke kare wannan nau'in firewall ɗin ba. Irin wannan Tacewar Tacewar tana kama da Tacewar filayen wakili ta yadda suke aiki azaman tsaka -tsaki tsakanin jimlar na'urorin da suke tallafawa da cibiyar sadarwa ta waje.
Binciken filayen wasa da yawa (SMLI)
Yana tace fakiti bayanai a wurin haɗin kai da matakin aikace -aikace, ta hanyar kwatanta su zuwa fakitin bayanai da aka sani da amintattu, kuma kamar a cikin firewalls na NGFW, SMLI tana bincika fakitin bayanai gabaɗaya kuma tana ba shi damar wucewa idan ta zarce duk yadudduka da matakan dubawa, yana kuma tantance nau'in haɗin gwiwa da matsayinsa don tabbatar da cewa duk hanyoyin sadarwar da aka fara ana yin su ne kawai tare da amintattun tushe.
Kuma kuna cikin ingantacciyar lafiya da amincin mabiyan mu masoya
