He aha ka pale ahi a he aha kona ʻano?
Ma kēia ʻatikala, e aʻo pū mākou e pili ana i kahi pale ahi a me nā ʻano o ka pale ahi kikoʻī.
ʻO ka mea mua, he aha ia mea pale ahi?
ʻO kahi pale ahi kahi pūnaewele palekana pūnaewele e nānā i ke kahe o ka ʻikepili i a mai kāu kamepiula ma luna o nā pūnaewele e hoʻopili ʻia ana, e ʻae a pale ana paha i nā kaʻa mai a i ia e pili ana i nā lula palekana i hoʻonohonoho ʻia.
ʻO kāna kumu, ʻo ia nō, e hana i kahi pale ma waena o kāu kamepiula a i ʻole pūnaewele pūnaewele i pili iā ia, i ka hoʻāʻo ʻana e pale i ka neʻe ʻana o ka ʻikepili hōʻino e like me nā virus a me nā hoʻouka hacking.
Pehea e hana ai i ka pale ahi?
Ma kahi e nānā ai nā pale ahi i nā ʻikepili e hiki mai ana a me waho e pili ana i nā lula i hoʻonohonoho ʻia, ka kānana ʻana i nā ʻikepili mai nā kumu palekana a kānalua ʻole paha, e pale ana i ka hōʻeha ʻana i kāu kamepiula a i ʻole nā kamepiula e pili ana i kāu pūnaewele i loko, ʻo ia hoʻi, he mau kiaʻi lākou ma nā helu pili kamepiula, ua kapa ʻia kēia mau kiko. nā awa, kahi e hoʻololi ai i ka ʻikepili me nā hāmeʻa kūwaho.
He aha ke ʻano o ka pale ahi?
Hiki i nā Firewall ke lilo i polokalamu a lako pono paha, a ʻo ka ʻoiaʻiʻo, ʻoi aku ka maikaʻi o ka loaʻa o nā ʻano ʻelua.
ʻO lākou nā polokalamu i hoʻouka ʻia ma kēlā me kēia kamepiula e hana i kā lākou hana i ka mālama ʻana i ka holo o ka ʻikepili ma o nā awa a me nā noi.
ʻO nā firewall lako paʻa nā lako kino i hoʻonoho ʻia ma waena o ka pūnaewele waho a me kāu kamepiula āu e pili ai, ʻo ia hoʻi, hōʻike lākou i ka pilina ma waena o kāu kamepiula a me ka pūnaewele waho.
ʻO nā Firewall o ka ʻaoʻao Packet_Filtering.
ʻO nā ʻano maʻamau o nā firewall,
Nānā ia i nā pūʻolo ʻikepili a ālai i kā lākou ala ke hele ʻole lākou i kūlike i nā lula palekana i helu ʻia ma mua i nā ahiahi. Nānā kēia ʻano i ke kumu o nā ʻikepili ʻikepili a me nā helu IP o nā hāmeʻa i hoʻopuka ʻia e lākou, no ke kaʻina hana like.
● ʻO ka lua o nā hanauna ahi
((Nā hanauna ahi hou (NGFW)
Hoʻopili pū ia i kāna hoʻolālā i ka ʻenehana o nā firewall kuʻuna, me ka hoʻohui ʻana i nā hana ʻē aʻe e like me ka nānā ʻana i ka pass, ka ʻōnaehana pale komo komo, nā ʻōnaehana anti-virus, a he hiʻohiʻona nō ia o ka hohonu hohonu DPI packet inspection, ʻoiai nā firewall maʻamau e nānā i nā poʻo. o nā ʻeke ʻikepili, nā pale uila hanauna hou He DPI ka lua (NGFW) e ʻimi pono a nānā i ka ʻikepili i loko o ka pūʻolo, i hiki ai i ka mea hoʻohana ke ʻike pono a me ka ʻike ʻana i nā ʻeke ʻino.
● Pākuʻi ahi Proxy
(Pākuʻi ahi proxy)
Ke hana nei kēia ʻano firewall i ka pae noi, ʻokoʻa i nā pale ahi ʻē aʻe, hana ia ma ke ʻano he waena ma waena o ʻelua wēlau o ka ʻōnaehana, kahi e noi ai ka mea kūʻai aku iā ia e hoʻouna i kahi noi i ka pale ahi o kēia ʻano e loiloi ʻia e pili ana i kahi ʻano palekana. nā lula e ʻae a pale paha i nā ʻike i hoʻouna ʻia no ka loiloi. ʻO ka mea e hoʻokaʻawale ai i kēia ʻano e nānā ia i ke kaʻa e like me nā mea i kapa ʻia ʻo Layer XNUMX e like me HTTP a me FTP, a he hiʻohiʻona nō hoʻi o ka hohonu DPI packet inspection a me nā mana a i ʻole stateful firewall technique.
● ʻO nā pale uila ka unuhi ʻana i ka helu wahi pūnaewele (NAT)
ʻAe kēia mau pale uila i nā hāmeʻa he nui me nā helu IP ʻokoʻa e hoʻohui pū i nā pūnaewele kūwaho me kahi helu IP hoʻokahi, i hiki ʻole i nā mea hōʻeha, ka mea e hilinaʻi nei i ka nānā ʻana i ka pūnaewele i nā helu IP, ke loaʻa nā kikoʻī kikoʻī e pili ana i nā hāmeʻa i pale ʻia e kēia ʻano pale ahi. Ua like kēia ʻano firewall me nā pale ahi Proxy i kona hana ma ke ʻano he mea waena ma waena o ka piha o nā hāmeʻa e kākoʻo ai a me ka pūnaewele waho.
● ʻO nā pale uila multilayer stateful (SMLI)
Kānana ia i nā ʻikepili ma ka helu pili a me ka pae noi, ma ka hoʻohālikelike ʻana iā lākou i nā ʻikepili ʻikepili i ʻike ʻia a hilinaʻi ʻia, a e like me nā firewall NGFW, nānā ʻo SMLI i ka pūʻolo ʻikepili āpau a ʻae iā ia e hala inā ʻoi aku ia i nā papa a me nā pae o ka nānā ʻana, hoʻoholo ia i ke ʻano o ka pilina a me kona kūlana i mea e hōʻoia ai i nā kamaʻilio i hoʻomaka ʻia e hana wale ʻia me nā kumuwaiwai hilinaʻi.
A aia ʻoe i ke olakino a me ka palekana o kā mākou poʻe aloha
