1 # Don't resolve hostnames (cleaner output?)
   2 tcpdump -n
   3 
   4 # ICMP (ping) packets only
   5 tcpdump icmp
   6 
   7 # IPv6 traffic
   8 tcpdump ip6

• host <IP>: only to/from a certain host or port

• src <IP>: only from a certain host or port

• dst <IP>: only to a certain host or port

• port <n>: only from a port number

CategoryCheatSheet