Gary, I don't know how to do the exact rules in McAffee Firewall. But you need to open port 5200 as a TCP/IP and ports 5198 and 5199 as UDP ports. Unfortunately, when I tried to do this with my hardware router, it still wouldn't work, so I had to put this PC in the demilitarized zone. Fortunately, I have Norton Personal Firewall which works on Echolink and still protects this PC when it is in the DMZ zone. Someone who thinks logically provides a nice contrast to the real world! Steve Lansing, Michigan [log in to unmask]