Paulo, >I have a problem where a router reboots every evening. I do not have >control of this router. For this, you might want to see if the janitors unplug the router to use the outlet in the evening. Seriously. As far as the issue with IPTABLES....this might be an issue with the ARP cache on the firewall. What kind of network card are you using? What kernel version? I've had problem like this on some 2.2 kernel implementations with old network cards. I'd have to "ifconfig eth* down/up" for the interface to work. ;-) -- Nigel Clarke Forever Networks Network Security Engineer www.forever-networks.com -----Original Message----- From: netfilter-admin@lists.netfilter.org [mailto:netfilter-admin@lists.netfilter.org]On Behalf Of Paulo Andre Sent: Wednesday, December 04, 2002 10:56 PM To: netfilter Subject: connection problem I have a problem where a router reboots every evening. I do not have control of this router. The problem is with iptables, as soons as the router reboots I lose the connection even when the router has come up afterwards. I then have to take the interface down, reload the firewall script, then reconfigure the interface and reapply the firewall script again so that I can see the router again. Can anyone tell me why this happens, the interface is a aliased interface, if that makes a difference. Thanks Paulo