WinDump - TCP-Dump for Windows WinDump is the official Windows version of tcpdump, the command line network analyzer for UNIX. WinDump is fully compatible with tcpdump and can be used to watch, diagnose and save to disk network traffic according to various complex rules. It can run under Windows 95, 98, ME, NT, 2000, XP, 2003 and Vista. BEFORE running WinDump 3.9.3 you have to download and install WinPcap 3.1. http://www.winpcap.org/windump/install/default.htm