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OpenVPN 2 is a robust and highly flexible tunneling application that uses all of the encryption, authentication, and certification features of the OpenSSL library to securely tunnel IP networks over a single TCP/UDP port.
Discussion forums and project wiki can be found here:
https://forums.openvpn.net/
https://community.openvpn.net/
Small Content Filtering And Web Acceleration Appliance
NetProxy, aka Debian NetInstall is an ISO based on the Artica Appliance Software. It provides a Proxy + Web-Filtering
It is optimized for small hardware in order to be installed on small VPS, virtual machines and microboxes.
Hardened Linux is a secured and minimalized distribution based on Slackware. It is designed to run as firewall, IDS host, authentication system and VPN gateway. PaX and SSP is included.
You can make a simple MSN control (which users can login), web authentication gateway (Horatio based), load balance (iproute2), traffic shape (QoS), simple packet filter and NAT redirects (DNAT), loadbalance and VPN gateway or roadwarrior and ...
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OpenVoucher is an open source voucher management / hotspot system for authenticating guests in your wifi or cable network. It is designed to be easy to use for anyone who wants to issue vouchers.
For further information and installation how to's, see the project's homepage.
The source code is maintained on Github.
Campagnol is a decentralized VPN over UDP tunneling. It uses UDP hole punching to open connections through NAT/firewall and OpenSSL's DTLSv1 implementation for mutual authentication and encryption.
Sphirewall is a user centric analytical network firewall/router, its the only open source product that provides user/group and role based firewall rules with extensive reporting services
Application proxy toolkit which inherits the ideology of TIS fwtk and maintains API backwards compatibility. The design goal is to make it simple yet powerful; no performance hacks allowed in the code and library dependencies are reduced to minimum.
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SOCKS Server and Library for Java. Support for versions 4 and 5 of SOCKS protocol. Designed to be easily expandable to support different encryption/authentication/authorization methods. Sample server and client are available.
This is a squid external authentication helper to facilitate SSO, single sign on, with Novell's eDirectory. It's written in mono and uses LDAP to access the information stored in eDirectory.
Web reverse proxy for Single Sign On (SSO). It can apply a security policy (profiles stored in a LDAP directory) to an existing set of applications, consolidate websites, encrypt all communications, rewrite simple URLs...
A web based, user oriented, easy use linux router box, support basic nat, user authentication, port management, traffic control, connnection limit, and proxy selection.
The Knock Project is a collection of security tools providing increased client/server authentication. The server and its functionality is provided by the netfilter kernel interface. Included are the daemon, a GNU/Linux client and a Windows client.
Packet Auth. Sniffer (or Sequence) Allows you to set on your server this little daemon (pasmal) monitoring tcp/ip & icmp, and on the exact good sequence (the one you only know) run processes (a firewall) - such as access list update, iptables,ipchains.
Authenticated network access: a lightweight network firewall authentication tool. Horatio is built around a custom Perl webserver and the Linux firewall tools.
This project aims to provide an easy to use interface to Samba, openLDAP, and Printing (via cups, iptables, emerge and apt-get. It currently is command-line based, and has the beginnings of a graphical interface via kommander (see quanta).
A small linux distribution aimed at servers, where the single point of administration and authentication is an OpenLDAP database. It includes modified versions of the most important services: Web Server, Mail Server, File Server, DHCP Server, authenticat
Nubric (Near-real-time user behaviour and resource interaction control) is a framework for security and authentication-related modules written in Java. Its origin focus lies on network monitoring, dynamic, transparent firewalling and traffic control.