sectool is a security tool for RPM based distributions. It can be used for security auditing and intrusion detection. Its goal is to catch mistakes caused by admins or point out things that they were not aware of. It checks system configuration and suspicious settings. It's easily extensible with language independent tests. License: GNU General Public License v2 Changes:
Both the TUI and GUI were reworked. Messages are printed in real time, not after the test is finished. Three new tests were added and many bugs were fixed.

More...