WWWOFFLE – World Wide Web Offline Explorer is a free simple easy to configure Webproxy with good security and privacy features. WWWOFFLE is designed to work for Unix and Linux based systems and a partially functional port is available for Windows.
WWWOFFLE can be used for a network with multiple PCs or can be used just on your local PC to improve performance and offline availability of pages.
RANCID is Really Awesome New Cisco Config Differ. AS its name implies, RANCID monitors network device configuration, including software and hardware and uses CVS (Concurrent Version System) or Subversion to maintain history of changes. RANCID is simple and is easy to use.
The same very functionality of RANCID can be used as a backup system for Network device config backup system or even a config change alert system as it can email changes from previous saved configurations. All this RANCID does by logging on to a network device using Telnet or SSH and runs various show commands to grab config changes (hardware & Software), send alert emails of any changes, format the info and commit to the CVS system.
Packet Fence is an OpenSource NAC (Network Access Control) Solution available under GPL license and is completely free. Packet Fence is a Network Access Control solution with world class features and many features beating those provided by expensive commercial alternatives. Mostly installed in acamedic institutions, please visit here to find a list of organisations and institutions that use Packet Fence as a Network Access Control system.
ICMP Redirects Send and Accept are by default enabled on most of the linux flavours including Debian, Ubuntu, Redhat Enterprise Linux, Suse Linux.
Firewall Builder is an Opensource multi-vendor Firewall Configuration and Management GUI tool. It uses a set of policy compilers for the different firewalls supported. If you are a Network administrator supporting multiple sites and multiple firewall devices then you would know what difference a central Firewall Manager can make to the day to day task. A Netscreen Security Manager for Junipers or the admin tool for checkpoints is an example, despite these being expensive commercial options from the very own vendors. Firewall Builder on the other hand a hetrogenous, vendor neutral configuration and management tool with support to more than one single platform and an easy design allowing expanding support more platforms.
Firewall Builder uses object-oriented approach, it helps administrator maintain a database of network objects and allows policy editing using simple drag-and-drop operations. Firewall Builder can generate configuration file for any supported target firewall platform from the same policy created in its GUI. This provides for both consistent policy management solution for heterogeneous environments and possible migration path.
ClarkConnect is an all-in-one Opensource networking suite from Point Clark Networks. It is a full blown security suite on one front with Stateful firewall protection, Intrusion Detection and prevention, Maile Gateway with Antivirus, Anti-spam and Anti-phishing support, proxy & web content filtering, peer to peer connection filtering for web protection while is also a networking suite with IPSec and PPTP support, bandwdith and system monitoring and a server with web-server, Database server support, file & print sharing, mail server, system and mail backup. All built on a cut down redhat linux with a good web interface.
redWall Firewall is a free opensource firewall based on Gentoo linux distribution with Linux Kernel 2.6. redWall firewall runs from a bootable CD-ROM while the configs are saved on a USB Memory stick, Floppy drive or on the Hard Drive. Newer version has support to install the firewall on the Hard Disk. The redWall firewall has a good web interface.
Reporting on the firewall is based on a MySQL database (except for squid) and so presents the advantage of using the firewall also as a Management console or a logging console so multiple firewalls in the network can report back to the management station or do the logging onto the redWall firewall for better presentation and broader visibility of the whole network security.