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Old 01-29-2013, 09:23 AM   #1
Registered: Nov 2004
Location: Virginia, US
Distribution: Slackware 14.1 multilib
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iptables question

I have a machine that has 3 NICs serving as a GW (eth0, eth1, and eth2 I have one machine in each of and that I need to be able to access from the network. So my idea is to set up port forwarding so that all traffic sent to that port gets forwarded to the corresponding machine. For example if my GW is and I point a browser to it get forwarded to

How would I write the rule(s) to get this working. TIA.
Old 01-29-2013, 03:08 PM   #2
Registered: Nov 2007
Location: USA
Distribution: CentOS 5/6
Posts: 186

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If it were me I would create a forward rule like this:

If protocol is TCP and destination is and destination port is 80 and state of connection is NEW,RELATED,ESTABLISHED
Then a NAT rule like so:

If protocol is TCP and destination is and destination port is 80
If is your default gateway you might look at installing Endian Firewall:



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