I don't use sygate. I use no sofware firewall. They take too much resorces when you don't restart your computer often. I also feel it make P2P a lot slower, and it is an aplication more to close when playing games, but I don't feel confortable closing it.
I do use router with NAT. Now, about that, I think it is possible to filter IPs from the router, right?? and I coud update that list as necesary, right??
I like that idea better.