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| | |-+  how firewall section and proxy section affect on each other
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Author Topic: how firewall section and proxy section affect on each other  (Read 29121 times)
kikilinux
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« on: Tuesday 15 October 2013, 03:04:07 am »

Hi
Maybe i have a miss understanding from firewall functionality with proxy
I want to enable proxy and for example block http traffic from green zone to DMZ zone, can i perform this ?
Do i say right, when i use proxy then i can't filter traffic by firewall ?

best
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kikilinux
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« Reply #1 on: Tuesday 29 October 2013, 05:23:49 am »

nobody can answer my question Huh
can we use http proxy and firewall together ?
when we use transparent http proxy then we can't use firewall in inter-zone or outgoing state ?

anybody knows ?
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jfinnigan
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« Reply #2 on: Tuesday 29 October 2013, 09:39:28 am »

Yes, you can. I think you are missunderstanding the purpose of a proxy/content filter and a firewall. They work at different layers in the OSI model. A firewall works at layer3 and stops or allows traffic bases on ACLs and their associated ip addresses and port numbers. It doesn't care or know what's inside those packets. A firewall would be what you use to stop or allow access to a particular network. The proxy content filter is what you'd use to block users from access certain internet websites.   

Hope that helps.
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