Analyze information traveling across a network with these programs.
Sniffer Intercepts and analyzes packets transmitted over a network. Network Sniffer can take plug-ins for different protocols, including IP, TCP, and UDP. Shareware. (http://www.ufasoft.com/)
TraceWolf Packet Sniffer Opens all packets passing through your modem or Ethernet card and displays header and data fields. Demoware.