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Can I Forward Packets to a Linux Firewall?

Unanswered Question
Jun 24th, 2002
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Is there a way to forward packets out the Ethernet port<br>

on a Cisco 2600 Series Router through a switch and to a firewall<br>

(Linux box) without physically or logically segmenting the network <br>

so that all traffic has to go through the firewall?


<pre>The router, .1, is on a 24 bit subnet. The Linux firewall has

.2 and .3 for its inside and outside Ethernet ports.

I tried setting a static route to the firewall, but it was

superseded by the directly connected route x.x.x.0/24.

C x.x.x.0 is directly connected to Ethernet0/0.</pre>


<pre>When it forwards the packets out Ethernet0/0, the switch

does its job and forwards the packets to the hosts within

the subnet, skipping the firewall. Is it necessary to

physically segment the network by directly connecting

e0 on the 2600 through a hub to .2 on the firewall?</pre>



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Anonymous (not verified) Mon, 06/24/2002 - 14:37
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It is not possible to have the interfaces of the firewall 

on the same subnet.





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