netstat -aThis will give you everything. To see what's servers you are running do:
netstat -a | grep LISTENTo see just the TCP/IP activity do:
netstat -a --tcpSee also: http://www.davekb.com/search.php?target=wireshark http://www.davekb.com/search.php?target=lsof http://www.davekb.com/search.php?target=ifconfig