Linux Firewall

Dear Experts,
In our environment we have juniper firewall ssg 140 whose ethernet port 0/1-0/3 are damaged and we have to send this device to Juniper so they can repair and send us back. In this meanwhile I want to configure linux firewall which can do all function as juniper ssg 140 does like port forwarding, virtual ip, url filtering,etc. Is there any fireall software for linux which is easily available on internet and easy to find help when something goes wrong.
Regards.
LVL 12
ibu1System AdministratorAsked:
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arnoldConnect With a Mentor Commented:
To do an I place setup, you need a box with the same number of interfaces.
Linux has iptables and it is a matter of configuring the iptables rules to match what you need.
Fwbuilder is a tool that can help you with the configuration.
Check with Juniper whether they can provide you a loaner onto which you can pre-load your config.
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Vijay Pratap SinghConnect With a Mentor Commented:
Use CSF http://configserver.com/cp/csf.html free and effective
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Zephyr ICTConnect With a Mentor Cloud ArchitectCommented:
Either pfsense or vyatta can be a nice replacement for the time being.

http://www.pfsense.org/ (free)
http://www.vyatta.com/ (free and enterprise version)
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madunixConnect With a Mentor Commented:
If you want a full featured free firewall:
http://www.pfsense.org/ (tons of features, rock solid stable, BSD based)
http://m0n0.ch/wall/ (Stable and simple, BSD based)
http://www.ipcop.org/ (Good support, Linux based, good addons)

See others:
http//www.shorewall.net
http://www.fwbuilder.org/
http://www.smoothwall.org/
http://www.untangle.com
http://www.clearfoundation.com
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