Date: Thu, 24 Mar 2005 17:36:39 +0100 From: Stefan Cars <stefan@snowfall.se> To: questions@freebsd.org Subject: Problems with ipfw2 ? Message-ID: <4242EC97.8070505@snowfall.se>
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Hi! I have a very strange problem with our firewall using ipfw2. Below is my configuration file. The firewall is a briding firewall (em2,em3). After a few seconds (7-12 seconds) of ICMP pings to a machine behind the firewall suddenly starts blocking all traffic to that specific host. This is also true for networks that I have permitted at the top of the config. It rejects everything regardless of any rules I have made. Any ideas anyone ? # Trusted networks add permit ip from XXXX/28 to any add permit ip from XXXX/26 to any add permit ip from XXXX/25 to any add permit ip from any to any established # DNS add permit ip from any to any 53 # ICMP add permit icmp from any to any # HTTP add permit ip from any to any 80 add permit ip from any to any 443 # SSH add permit ip from any to any 22 # Deny everything else add deny ip from any to any
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