PaulOS is a reference implementation of an embedded operating system which supports a subset of POSIX geared for embedded realtime single process applications. It is written to allow applications to be developed under GNU/Linux or FreeBSD and then recompiled without changes for the target architecture. It features POSIX file descriptors, a TCP stack (LwIP) with a BSD socket API, an ANSI C library, a DNS resolver library, and a minimal pthread library. A number of GNU/Linux network applications have been ported to it.
The Viper IDS is an IDS sensor that can be used stand-alone or as an add-on to the Wolverine Firewall and VPN server. It can log all alert information to a remote MySQL database that can be analyzed by applications such as ACID, or can be used with Wolverine to provide real-time responses to potential threats by dynamically adjusting perimeter firewall rule sets. It uses Snort for attack signature detection.
openMosixLOAF (openMosix Linux-On-A-Floppy) is a single floppy openMosix Linux mini-distro designed for harddiskless systems or HPC clusters where only CPU and memory is needed. It has drivers for all PCI Ethernet NICs that the Linux kernel has support for (10/100/1000) and comes on only one bootable 1.6MB 3½" floppy diskette, ready to be a node in your HPC cluster.
S-terminal lets you create a secure X terminal. Regular X terminals pass unencrypted data between you the remote machine. S-terminal creates an encrypted tunnel through which all X traffic passes. It replaces the remote xdm login screen with a local application that collects username and password, then sets up an ssh tunnel to the remote host and starts a session. It is highly configurable both in appearance and behavior, and deployed S-terminals can be remotely administered. Best of all, it can be added to a KNOPPIX CD to create an instant, bootable, secure X terminal CD.
SoL-diag is a diskless Linux distribution that was designed for the rescue and analysis of i686 computers. The 36MB image contains over 300 programs, including DVD and MP3 players and CD-RW buring tools. It is also useful for improving your Linux skills and benchmarking computers without having to install programs to the hard drive.