Started as part of the Google Summer of Code 2005, this tool adjusts security settings on Linux systems, including firewall and SELinux policies. This tool aims to replace the system-config-securitylevel tool from Red Hat and Fedora Core systems.
Live Security/Forensics Linux Distribution, built from scratch and packed full of tools useful for vulnerability analysis, penetration tests, and forensic analysis.
Actim is an application written in python that allows sending/receiving files and calling command lines via email. (under GPL license)
For example, if your home PC does not have any access to your office workstation which is behind the company firewall.