For pete’s sake block NetBIOS at the firewall

Yet another worm attacking Microsoft boxes is on the loose (see CERT). This is the second vulnerability in the past week or so targeting the NetBIOS ports. At the very least, block TCP/UDP ports 135,139 and 445 at the firewall. I sure do. Good thing, last time I checked the logs, I was blocking from 10 to 20 requests every second or two.