Summary: Network Traffic sniffer, with pattern matching like grep

Description:
ngrep strives to provide most of GNU grep's common features,
applying them to the network layer. ngrep is a pcap-aware tool
that will allow you to specify extended regular or hexadecimal
expressions to match against data payloads of packets. It
currently recognizes TCP, UDP and ICMP across Ethernet, PPP, SLIP,
FDDI, Token Ring and null interfaces, and understands bpf filter
logic in the same fashion as more common packet sniffing tools,
such as tcpdump and snoop.

URL: https://github.com/jpr5/ngrep
License: BSD

Maintainer: nobody