copSSH is an ssh server and client implementation for windows systems. It is a yet another packaging of portable openssh, cygwin, some popular utilites, plus implementation of some best practices regarding security. You can use COPSSH for remote administration of your systems or gathering remote information in a secure way.
Ophcrack is a free Windows password cracker based on rainbow tables. It is a very efficient implementation of rainbow tables done by the inventors of the method. It comes with a Graphical User Interface and runs on multiple platforms.
WiKID is a two-factor authentication system. It consists of: a PIN, stored in the user's head; a small, lightweight client that encapsulates the private/public keys; and a server that stores the public keys of the client's and the user's PIN. When the use
'NTLM Authorization Proxy Server' (APS) is a proxy software that allows you to authenticate via an MS Proxy Server using the proprietary NTLM protocol. Since version 0.9.5 APS has an ability to behave as a standalone proxy server and authenticate http clients at web servers using NTLM method. It can change arbitrary values in your client's request header so that those requests will look like they were created by MS IE. It is written in Python v1.5.2 language.
Sussen is a tool that checks for vulnerabilities and configuration issues on computer systems. It is based on the Open Vulnerability and Assessment Language.
Kismet is an 802.11 layer2 wireless network detector, sniffer, and intrusion detection system. Kismet will work with any wireless card which supports raw monitoring (rfmon) mode, and can sniff 802.11b, 802.11a, and 802.11g traffic.
The following is an example iptables firewall that allows incoming ssh connections from an individual IP address (192.168.1.100), allows all outbound traffic, and uses stateful inspection.