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CryptoServer is the daemon for handling Sign-Verify, Encryption-Dencryption, Envelop-Openenvelop based on OpenSSL including the SEED symmetric algorithm (Korean Standard Symmetric Algorithm).
It's interface is just tcp/ip socket and very easy to handle
iDVR (formerly Devolution Security System) is a video surveillance system which can handle up to 16 cameras with motion detection, notification and record on motion to mp4. Stream over the LAN (Multicast) or Over the Net (Unicast).
Antispyd is an HTTP/HTTPS threats filtering proxy server written in pure C under Linux. The main goal of the project is to develop a free, secure, fast and extensible solution to fight against current Web threats, anonymize and control web traffic.
Apache security module. Makes Apache configurable to work as diffrent user, group and diffrent chroot() environment for each VirtualServer and for ~user request. Designed mostly for ISP to make Apache secure.
LKL is a userspace keylogger that runs under Linux on the x86 arch. LKL logs everything that passes through the hardware keyboard port (0x60). It translates keycodes to ASCII with a keymap file.
KINEC Is Not Encrypted Chat is a client/server chat program designed to keep you secure. It uses strong algorithms for encryption and authentication and will not compromise security.
pamtester is a tiny utility program to test the pluggable authentication modules (PAM) facility, specifically designed to help PAM module authors to intensively test their own modules.
This project aims to pool together as many kernel projects as possible, ironing out conflicts where possible, so that experimental kernel projects can get greater exposure, safely, and so that those projects can be tested under much more varied conditions
Gate Guardian is a library of C/C++ functions that can be used to avoid common security problems when a process forks or is forked from a parent process, or runs / is run by an external program. The code is meant to be portable across many UNIX variants.
nf-HiPAC is a high performance packet filter for Linux. It provides the same rich feature set as iptables but uses an advanced algorithm to minimize the number of memory lookups per packet.
loginote is a program to immediately display a note on screen (using xosd) when a user logs into the system or logs out again. Just imagine someone knows your password and you might be interested when he/she logs into your system.. ;). loginote will tell
pwsafe is a password database command-line utility. Passwords are kept in an encrypted database. Compatible with Counterpane's Win32 PasswordSafe ( https://sourceforge.net/projects/passwordsafe ).
Sussen is a tool that checks for vulnerabilities and configuration issues on computer systems. It is based on the Open Vulnerability and Assessment Language.
The goal of WallFire is to build a very general and modular firewalling application based on netfilter or any kind of low-level framework. It will provide a multi-language API, command line and interactive tools as well as X11 or HTML front-ends.
OpenInfreno is an open source root wars toolkit & engine designed to score attackers accessing a network of victims. This project consists of a score server and several tools, as well as documentation and implementation information.
The doorman guards the door of a server, manipulating firewall rules to admit only recognized parties.
Allows Silent Running - a server with all ports CLOSED.
Linux-BSD-OSX server & client; C source & docs + Windows client binary. GPL.
The Network Security Response Framework (NSRF) allows for testing different computer security response engines and methodologies. It supports simulated and real: Intrusion Detection Systems (sensors), Attacks, and Responses.
siggen is a cool email signature generator for encrypted ansi c (confused), brainf*ck, ... signatures. Use it in combination with vi(m), emacs, mutt, pine, or what ever. (tested on Solaris, Linux and Windoze). Optimized only for geeks :-)
The TeleAuth Client Tools are a set of Unix tools for the TeleAuth two-factor / two-channel authentication system (http://www.teleauth.com). This includes a commandline client and a set of PAM modules. Written in Perl and C for Linux, OSX and Solaris.