ngrep: ngrep (network grep)
ngrep:
ngrep: ngrep strives to provide most of GNU grep's common features,
ngrep: applying them to the network layer. ngrep is a pcap-aware tool that
ngrep: will allow you to specify extended regular or hexadecimal expressions
ngrep: to match against data payloads of packets. It currently recognizes
ngrep: IPv4/6, TCP, UDP and ICMPv4/6, IGMP and Raw across Ethernet, PPP,
ngrep: SLIP, FDDI, Token Ring and null interfaces.
ngrep:
ngrep: Homepage: http://ngrep.sourceforge.net/
ngrep: