# tcpdump > Dump traffic on a network. - List available network interfaces: `tcpdump -D` - Capture the traffic of a specific interface: `tcpdump -i {{eth0}}` - Capture all TCP traffic showing contents (ASCII) in console: `tcpdump -A tcp` - Capture the traffic from or to a host: `tcpdump host {{www.example.com}}` - Capture the traffic from a specific interface, source, destination and destination port: `tcpdump -i {{eth0}} src {{192.168.1.1}} and dst {{192.168.1.2}} and dst port {{80}}` - Capture the traffic of a network: `tcpdump net {{192.168.1.0/24}}` - Capture all traffic except traffic over port 22 and save to a dump file: `tcpdump -w {{dumpfile.pcap}} not port {{22}}` - Read from a given dump file: `tcpdump -r {{dumpfile.pcap}}`