Problems with ipfw2 ?
stefan at snowfall.se
Thu Mar 24 08:36:49 PST 2005
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
add permit ip from any to any 53
add permit icmp from any to any
add permit ip from any to any 80
add permit ip from any to any 443
add permit ip from any to any 22
# Deny everything else
add deny ip from any to any
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