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SedirOS is a minimal, hardened Linux distribution for servers. SedirOS 1 is based on Debian 13 (trixie): the same packages, the same security updates, the same apt.
On top of Debian it adds security defaults (kernel and network hardening, AppArmor, a firewall that denies incoming traffic, key-only SSH), an installer with full disk encryption, Secure Boot and optional disk unlock over SSH, and sediros-audit, which tells you whether the hardening is still in place and which file changed it if not.
The files here mirror the releases on GitHub: https://github.com/sediros/sediros/releases
Source code, documentation and issues: https://github.com/sediros/sediros
Features
- Hardened by default: sysctl, AppArmor, firewall, key-only SSH
- Full disk encryption (LUKS2) with Secure Boot
- Unlock the disk over SSH at boot
- sediros-audit checks that the hardening is still in place
- Plain Debian underneath: apt, Debian packages and docs
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