Download of ngrep-1.43.tar.bz2 (ngrep-1.43.tar.bz2 ( external link: SF.net): 447,819 bytes) will begin shortly. If not so, click link on the left.
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 expressions to match against data payloads of packets.