Hello everybody, Last week some of our client's PC's got infected by a virus and they started random IP scanning on a particular TCP port on the network. The PC's were generating more than 50 new TCP connections in a second. This took a heavy toll on the NAT'ing and very soon we ran out of ports for NAT. I had to block the port and inform the client to disconnect the machines out of the network & clean it before putting it back. But this was after the damage was done. It would have been great if there was some sort of alerting facility available in iptables. The disaster could have been prevented. Is there anyway to set alerts on iptables? Is there a P-o-M, some script or tool that would do this job? I am sure this must have happened to some of us. How does everyone else respond to such situations and prevent it from happening in the future? Specs: Fedora Core 2 Kernel 2.6.8.1 Iptables 1.2.11 Thank you, Deepak Seshadri