hello! I've recently reentered this mailinglist and thus i don't know if this question has been asked before.. i hope i'm not alone with this problem! Last week I bought a new harddrive for my box, and installed slackware 9.1 (had 8.0 earlier) and compiled kernel 2.6.4 (had 2.4.22 earlier). At first, everything seems to be fine, iptables runs. But after half an hour or so, iptables just stops working. It's only iptables that does this (i suppose), the server/router still has connection to the internet and the computers behind it. (I.e i have a ventrilo server running on the router, and i can still talk to users connecting to it from the internet, while i'm connected to it from inside the lan). After about 5 minutes of downtime iptables suddenly starts working again, and the computers on the NAT has internet access again. These are my rules: IPTABLES=/usr/sbin/iptables EXTIF="eth0" INTIF="eth1" $IPTABLES -P INPUT ACCEPT $IPTABLES -F INPUT $IPTABLES -P OUTPUT ACCEPT $IPTABLES -F OUTPUT $IPTABLES -P FORWARD DROP $IPTABLES -F FORWARD $IPTABLES -t nat -F $IPTABLES -A FORWARD -i $EXTIF -o $INTIF -j ACCEPT $IPTABLES -A FORWARD -i $INTIF -o $EXTIF -j ACCEPT $IPTABLES -t nat -A POSTROUTING -o $EXTIF -j MASQUERADE Nothing here has changes since i was running kernel 2.4.22. What could be the problem? Anyone else who has experienced this? I'm using iptables v1.2.9 Regards Erik Ahlner