GnuSniff is a network packet sniffer. It aims to be the best looking, easiest to use, and most powerful packet sniffer existing under linux. This is currently at a alpha stage. It sniffs packets, and the interface is vaguely in place. Help would be very much appreciated with development and design issues. GnuSniff understands Ethernet frames, IPX, IPv4, ICMPv4,TCP, UDP and DNS.
You can download it from the following link: https://packetstormsecurity.com/files/download/14435/gnusniff-0.0.5.tar.bz2
Source: https://packetstormsecurity.com/files/14435/gnusniff-0.0.5.tar.bz2.html