To filter eth1 interface
tcpdump -i eth1
To filter eth1 interface without resolv DNS
tcpdump -i eth1 -nn
To filter one IP
tcpdump -i eth1 -nn host 192.168.0.7
To filter eth1 and destination port
tcpdump -i eth1 -nn dst port 2967
To filter more that one destination port
tcpdump -i eth1 -nn dst port 2967 or 80
To filter one source IP
tcpdump -i eth1 -nn src 10.20.181.55
To filter a destination IP
tcpdump -i eth1 -nn dst 207.46.26.23
To filter one IP and port
tcpdump -i eth1 -nn host 192.168.0.7 and port 80
To filter one source IP and port
tcpdump -i eth1 -nn src 10.20.181.55 and port 1863
