I am having trouble blocking the windows messenger popups. I know that I can disable the windows messenger service, but I want to set up firewall rules instead. I am using Sygate Personal Firewall. I have set up two advanced rules. The first rule blocks all incoming UDP traffic on local ports 135,137,138,139,445. The second rule blocks all incoming TCP traffic on local ports 135,137,138,139,445. When I test it by sending myself a message using the "net send" command, the message gets through. When I check my traffic log the message seems to sometimes get through on a port above 1000. Other times, the traffic log shows traffic on ports 137 and 138 was blocked, with no indication of incoming traffic coming in, but the test message still pops up. Any help would be appreciated. Thanks.