Ntop 5.0.1 Description:
ntop (short from network top) is an open source and completely free command-line software that gives users detailed information about their network traffic, using the rrdtool and libpcap packages, under GNU/Linux and UNIX-like operating systems. The program is capable of sorting network traffic based on protocols. It displays network traffic and traffic statistics, stores traffic statistics in RRD (Round-Robin Database) format, and identifies computer users and host operating systems. In addition, the software can be used to display IP traffic distribution, analyze IP traffic, display IP traffic subnet matrix, report IP protocol usage, as well as to output RMON-like network traffic statistics.