I have seen a lot of threads about the best firewall but haven't heard that much about actual filtering rules. If there is already a thread you can point me there. I was wanting to hear from some of the security folks about the advanced rules that you have on your home PC. For example blocking ports 135-139 both incoming and outgoing traffic an all ports and protocols. I have a decent knowledge on what ports different protocols typically use but not quite sure what to block and what not to block. Right now on Sygate I am blocking all ICMP traffic, 135-139, 21 when not using FTP. Is it safe to block port 445? Whenever I do block 445 my internet does not work. If you could post some rules for me to help lock down my computer I would really appreciate it. Thanks