I have a firewall, i could never host before but this is what i had 2 do.
First, i clicked on the top button which says i have a firewall and will also highlight the bottom button which says ( old connection ). Or u can just click on the bottom one... Also u can change ur IP adress to AUTO in caps, if youhost and u are getting a (0) next to ur name...

Second, if youhave a problem and u can't block in 1on1's because of lag... then experiment around with differnt pings and see if youcan. ( I usually use 60 now )

Hope this helps u....
Edited By sf6689 on 1114418646