I am using Firefox to browse. and it seems to lose its connection with every other link that I click. Each lost connection shows the following in my firewall logs: Protocol: UDP Out IP 192.168.0.8:137 > 192.168.0.255:137 It looks like my local IP is sending packets to the router's broadcast address using Netbios. I have always had netbios port disabled in my firewall My questions are: 1. Why would UDP port 137/Netbios suddenly need to send to the router broadcast IP? 2. The packets appear to be dropped, so should I allow IP 192.168.0.8:137 > 192.168.0.255:137 to fix my browsing issues, or could there be something sinister going on? With netbios disabled in WINS, and UDP port 137 blocked, I have not had issues with lost connections until yesterday. I am looking for help, because I haven't been able to figure this problem out.