tcpdump
Record all traffic from a given host/port:
tcpdump -s 65535 -w tcp.dump host 10.6.6.1 and port 10114
Record all traffic involving a given host:
tcpdump -s 65535 -w tcp.dump src 10.6.6.1 or dst 10.6.6.1
Record all traffic from a given host/port:
tcpdump -s 65535 -w tcp.dump host 10.6.6.1 and port 10114
Record all traffic involving a given host:
tcpdump -s 65535 -w tcp.dump src 10.6.6.1 or dst 10.6.6.1