pyctd is a XML-RPC service for monitoring and altering Netfilter connections for network admins. It features connections listing (with the byte rate of connections), entries removal, and modification of connmark and timeout. By using XML-RPC, frontends can be easily built. A PHP frontend is already available.
Cyan Secure Web Proxy Server is a carrier grade, high performance Internet filtering proxy server for Linux. It includes scalable (user/group/host) Web filter and virus scan utilities for blocking malicious applications at the gateway. It has an advanced URL database, authentication support (Active Directory, LDAP, NTLM), SSL Interception, easy deployment, and remote administration.
ConceptDraw NetDiagrammer has been developed for professional computer network diagramming, LAN scanning and visualization, preparation of network documentation, and office/building/home network planning. It is intended for network administrators, IT directors, network designers and engineers, and for everyone who finds detailed network documentation, diagramming, and schematics critical. It includes large collections of task-specific shapes of network objects, as well as templates, samples, and easy-to-use wizards. It also allows drawing all types of UML diagrams, floor plans and office layout drawings, flowcharts and dataflow diagrams, workflows, and more.
TraffStats is a monitoring and traffic analysis application that uses SNMP to collect data from any enabled device. It has the ability to generate graphs (using jpgraph) with the option to compare and sum up different devices. It has a multiuser-design with rights-management and support for multiple languages.
Firekeeper is an intrusion detection and prevention system for Firefox. It is able to detect, block and warn the user about malicious sites. Firekeeper uses flexible rules similar to Snort ones to describe browser-based attack attempts. Rules can also be used to effectively filter different kinds of unwanted content.
StreamMonitor is a plugin for GlowWorm FW that organizes and displays incoming and outgoing socket data in a tcpdump-like format. The interface shows the current offset, the data in both hex and ASCII, the direction of the data (incoming or outgoing), packet size, end point IP addresses and port numbers, and more.