tcpdump (examples)Here are some more tcpdump examples for some more advanced use cases. For simple usage examples, see the main tcpdump topic. Filter on protocol (ICMP) and protocol-specific fields (ICMP type)Capture all ICMP with some exceptions. For example, if a host runs lots of pings (SmokePing for example), it is useful to suppress ICMP echo requests and replies from dumped packets: : root@m