Enforcer is a Linux security module designed to help improve integrity of a computer running Linux. The Enforcer provides a subset of Tripwire-like functionality. It runs continuously and as each protected file is opened its SHA1 is calculated and compared to a previously stored value. The Enforcer is designed to integrate with TCPA hardware to provide a secure boot when booted with a TCPA enabled boot loader. TCPA hardware can protect secrets and other sensitive data (for example, the secrets for an encrypted loopback file system) and bind those secrets to specific software.
Agnix is a small, educational operating system kernel for i386, supporting 32-bit protected memory mode, paging, hardware switched tasks, memory tests, PCI bus, devices, PCI IRQ routing, RT timers, network protocols. It is available with all the source code and is fully compatible with the Linux kernel API.
pxe-boot is a PXE boot configuration of a Red Hat kickstart environment and another PXE boot environment of a recovery console. The Red Hat kickstart is just the standard Red Hat install boot disk (ES3.0), but it does not come with the installation files, just the install environment. The recovery console is an edited Gentoo environment with raidtools, parted, partimage, lilo, grub, and a slew of other handy recovery tools.