0. Bastille Linux
0. BSD /etc/security port
0. Center for Internet Security > Level-1 Benchmark and Scoring Too
0. chkrootkit
0. Extended attributes and ACLs for Linux
0. freeVSD: Welcome to freeVSD
0. freshmeat.net: Project details for ulim
0. grsecurity
0. imprison: imprisons processes to jail
0. IP Personality
0. Keychain
0. LIDS Project - Secure Linux System
0. Linux 2.x port/socket pseudo ACLs
0. Linux Trustees ACL project
0. Linux-PAM modules etc. page
0. LSAT
0. MandrakeSecure: Introduction to msec
0. Mhash
0. mod_security
0. nimh.org / KCHUID
0. NSA Security-Enhanced Linux
0. One Time Passwords in Everything (OPIE)
0. OpenAntiVirus Project
0. Openwall Project
0. pam_dotfile
0. rssh - restricted shell for scp/sftp
0. samhain labs - samhain
0. Sudoscript
0. Suexec style Locations
0. The Center for Internet Security