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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
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.
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.
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This is a port of FreeBSD divert socket mechanism to linux. This works in conjunction with IPtables and sends packets to user space. Similar to ip_queue but allows any number of unique user space listeners, such as Snort.
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.
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.
Trustees is a recursive ACL scheme for the Linux 2.6 kernel's Linux Security Module(LSM) framework. If you have ever used netware, you will be familiar with the speed and convenience of the trustees' approach to ACLs.
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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.
Development of Linux kernel extensions which enable intrusion detection and prevention functionalities based on NSA's SELinux (http://www.nsa.gov/selinux/).
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.
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 :-)
PADS is a signature based detection engine used to passively detect network assets. It is designed to complement IDS technology by providing context to IDS alerts.
The purpose of the tool is to perform fingerprinting of remote TCP/IP stacks based on Ofir Arkin's ICMP fingerprinting research. This tool is a practical implementation of results discovered during 'project X' http://www.sys-security.com/index.php
LOMAC LSM is a Linux Security Module (LSM) based on the original LOMAC http://opensource.nailabs.com/lomac . LOMAC implements a simple form of Mandatory Access Control mechanism based on Bibas Low Water-Mark Access Control model.
A python binding for the iptables tools.
The binding allows direction manipulation of the iptables through an object oriented and transaction based manner.
The binding removes the need to call iptable on the command line in python applications.
PSeudo terminal Intrusion Detection System.
The kernel part plugs into terminal processing subsystem and logs hashed terminal lines.
The user part reads these, consults a list of allowed entries, and takes appropriate action upon unexpected lines.