SilentNight 2004 is a free network utility for network and security auditing. The idea behind this program was to make one tool that could do what you normally needed several programs to do.

Among the tools you will find Network Sniffers, Portscanner, FTP Client, VNC Client, DNS Lookup/Reverse Lookup, Advanced netstat, Network Traffic Monitor, Telnet Client, Whois, Lan Manager, Network Statistics and many other usefull tools.