Bastille Linux
This distribution, which is based on Red Hat Linux and designed with the goal of increasing security, has a Web site that hasn't been updated since June but distribution files that are more up to date. The main target for the distribution is universities and educational institutions.

khaOS Linux
This Linux distribution is designed for the paranoid in the Linux user base, incorporating state-of-the art cryptographic tools (CFS--Cryptographic File System--Kerberos, IPsec, IPv6 and VPN technologies) and the integration of network security tools (Tripwire, Abacus, Sentry/Logcheck, SATAN, SAINT and more).

Slinux
Slinux is a secure, specialized, server distribution. Development is still in very early stages, and can only be downloaded from the Internet.

Spiro Linux
Spiro Linux includes a host of tools and separate installations designed for a wide range of Linux-based server installations, including an advanced Web Server System based on Apache (complete with php3 and mod_perl installed, as well as FrontPage 2000 extensions), support for 16 languages (including English, Spanish, French, German, Italian and 11 others), kernel 2.2.x, RAID support, the K Desktop Environment and the Zope application server.

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