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Setting up Linux and Squid

Posted on 2010-08-23
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Last Modified: 2013-12-16
Hi

I am hoping someone could help me or point me in the right direction with this issue.
I basically have set up a Linux Server with 2 network cards (eth0 and eth1) both working - I also have installed Squid version 3 administered from Webmin.

I would like to know how I can set the system up so that I can route from 1 network card to the other so that my internet traffic uses NAT. My eth1 card is linked to my broadband modem.

I also need to know (if any) how to setup Squid to forward requests to eth1 once it is approved.

Thanks for the help!

Sagar

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Question by:sagarh
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Casey Herman earned 500 total points
ID: 33501890
Do you need the current installation that you have. If not here is an easy way to accomplish all the above with this distro.                 http://www.clarkconnect.com/

I have used it for a few years. Has a lot of features and the community edition is free.
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by:Pieter Jordaan
ID: 33501977

Use pfSense - http://www.pfsense.org

It is a router and firewall with bundled squid3.
The configuration is also web based.

You can try it without installing it, just boot up with the CD.

Download The live CD version - pfSense-1.2.3-RELEASE-LiveCD-Installer.iso.gz from http://www.pfsense.org/mirror.php?section=downloads 
Write it to a CD, and boot with it.

There is plenty help available online, and you can even buy the book on amazon.com
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by:petelettin
ID: 33502358
You can use;
echo 1 > /proc/sys/net/ipv4/ip_forward

to temporarily enable routing
But basically it depends what distribution you are using

You need to use either iptables or ipchains which will allow you to enable Masquarading (NAT) on anything entering the server on a specific NIC

see http://tldp.org/HOWTO/IP-Masquerade-HOWTO/firewall-examples.html#RC.FIREWALL-IPTABLES

Once this is setup squid will block or allow traffic through the server based on your squid ACLs


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