tportknockd is lightweight but complete and fast port knocking daemon for Linux. It uses no extra libraries and is need about 30kByte space. Therefore it is most eligible for embedded networking devices like SOHO routers.
An alternative Identification system that is a replacement for Microsoft's Passport and the Liberty Alliance. Its a simple architecture that is setup so anyone can run a server and thereby have control over their online identification.
This is a internet security scanner which scans a specified machine or a range of IPs for all possible information like NetBIOS enumeration, gathering sharelist, domain, os, lan manager, remote connection, SNMP walking, ...
GWCC allows users to execute network utilities (ping, nslookup, traceroute) and workstation commands (netstat, df, process grep) from a single tabbed window. Command flags are highly configurable, results windows are savable and printable, plus more!