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The purpose of the Hi-Performance Protocol Identification Engine/HiPPIE is to analyze network traffic, and determine what protocol is in use within a given session based on packets sent to the engine. Linux kernel mod with support for iptables/netfilter
PEStudio is a network protocol analysis and security auditing tool for Windows which allows you to apply scripts to winsock calls in order to filter / edit the data that travels to and from your computer, giving you complete control over your network.
The library implements generic content inspection protocol API compatible with Sendmail Milter, thus allowing various applications and proxies to use Milter-compatible filters without running sendmail itself. It is here to replace Checkpoint\'s OPSEC/CV
Allows use of the same port for both a SSH server and SSL (https) server, without needing changes to clients. Incoming connections will be proxied to a SSH or SSL server depending on the protocol spoken by the client. Handy if your home box runs a secure
Enable Linux firewall to support connection tracking and NAT of H.323 protocol. It supports RAS, Fast Start, H.245 Tunnelling, Call Forwarding, Signal Proxy/Softswitch, RTP/RTCP and T.120 based audio, video, fax, chat, whiteboard, file transfer, etc.
l7f stands for "Layer7Firewall" which is a firewall-system, that protects your application on any protocol and fits its security needs flexibly. It can be used for example as web-application firewall.
Bash script that uses iproute2 and shapecfg (shaper.o) to limit incoming and outgoing traffic on a linux router. Also haves option for supporting more than 100 shapers via kernel patch.
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Open Firewall is a way to agregate some good technologies to make a complete, robust and fast application level firewall. It will provide an open framework for developpers who wish to implement protocol filters.
Sifter is a file and directory transfer program.
It stuffs important files that have recently changed onto a floppy
so that you can take them home from work. It can also use the
Internet instead of a floppy, if you don't have to go past a firewall
The Nemesis Project is designed to be a command line based, portable human
IP stack for UNIX-like and Windows systems. The suite is broken down by
protocol, and should allow for useful scripting of injected packets from
simple shell scripts.
TCP-Switch currently allows sharing one port for four protocols (SSH, HTTP, HTTPS, passive FTP).
Each protocol can be forwarded (tunnel) to a different <host:port>.
Future releases will allow much more controll, e.g. client IP/port, and other protocols
DGHMux-Java is a Java library for multiplexing several streams over one connection such as TCP and SSL. It allows a developer to create a protocol that can be encrypted with SSL and allows firewall admins to easily allow or reject your protocol.
The SWAP (Secure Wireless Access Point) project is intended for use in embedded appliances. These appliances will operate in the role of a WEP (wireless encryption protocol) and IPSEC enabled wireless access point, IPSEC VPN gateway, and firewall.
Remote Packet Filter Control Daemon allows remote control and monitoring of OpenBSD's packet filter. It communicates with clients using RPFC protocol running on top of SSL (Secure Socket Layer).
WebCheck is a simple device (computer, router, firewall) health status checking or monitoring over HTTP protocol. Very useful to keep track the status of of a multiple servers or workstation from remote location.
Hank is a scalable, extensible, modular, threaded user-space program to handle all your packet juggling needs. It'll analyze, report, and act on network traffic in any protocol, at any OSI layer, at any nesting depth. And it'll do it damned fast.
A Simple Middlebox Configuration Protocol (RFC 4540) implementation for Linux.
SIMCO is a signaling protocol that can be used by applications (such as SIP B2BUAs) to dynamically control firewalls and Network Address Translators (NATs).
IP Blocking Daemon based on nfblockd and moblock that merges the best of both with changes as well. The major change is to logging. ipblkd will log source and destination IP as well as ports and protocol.