| Astaro Internet Security: Appliance-based special-purpose hardened Linux distribution with firewall, VPN, anti-virus functionality. Some functionality is available for free for home use, the rest is commercial. |
| Castle: Server distribution from ALT Linux Team. Improved security is achieved with the use of RSBAC, general privilege separation approaches, and certain pieces and ideas from Owl. A beta is available for testing and use. |
| Devil-Linux: Small CD-based distribution used for firewalls, routers. System configuration settings are stored on separate floppy disk. Descriptions, news, documents, downloads, links. |
| EnGarde: Server distribution, goal: provide level of security needed to create corporate web presence or conduct business on Web. Security achieved via included software and using principle of least privilege; available for use. |
| HP Secure OS Software for Linux: Server platform using compartmentalization to contain processes to known part of filesystem and network; has system level auditing, supports remote configuration. Mostly closed source. Was commercial product, now discontinued, unsupported. |
| Immunix: Server platform, Red Hat based, hardened against several classes of attacks via using Immunix tool family which includes StackGuard compiler, FormatGuard, SubDomain. Available for use. |
| Migrating to Astaro Security Linux: Fed up with costly, complex firewalls, e-gaming firm eBet Ltd., picks open source security; senior systems administrator knew he needed to upgrade from Check Point 4.0 perimeter firewall. [Linux Journal] |
| Owl: Openwall GNU/*/Linux is a server distribution; main means to security: proactive source code review, privilege separation; several other means also used. Available for use. English, French, German, Russian. |
| Project Plan-B: Bootable linux live CD-ROM for system and network security testing. |
| Security Enhanced Linux: NSA research prototype made public, has modified kernel, several utilities; has enhanced security-related functions designed to show value of mandatory access controls and how such can be added to Linux; not a full OS distribution. |
| Sentry Firewall CD: Linux-based bootable CD suitable for use as low cost, easy to maintain firewall or IDS node. |
| Trustix: Server distribution; packages chosen based on their security record, safe defaults used. Available for use. |
Classical
