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| Subject: | IPFW and ICMP |
|---|---|
| Date: | Wed, 29 Mar 2006 10:33:36 -0800 (PST) |
I am using an IPFW firewall and only allowing ICMP in one direction. Example: ipfw -q add 00501 allow icmp from 192.168.1.1 to any out via fxp1 keep-state The problem that I have is when I send icmp packets from 192.168.1.1 to 192.168.5.2, the icmp packet works, but the system on the other end can now ping 192.168.1.1. What is happening is that the firewall is not able to tell the differrence between an icmp-echo request and an icmp echo reply. Is there any way to make force the firewall to keep a stateful connection while only allowing the initiation of the icmp packet come from the host requesting it? Thanks __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
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