Firewalls
BBIagent.Net, Firestarter, FloppyGate, Guarddog, IPCop Firewall, Linux-based Floppy-Boot Firewall, NetBoz Firewall, Sentry Firewall CD-Rom, SmoothWall, Wolverine Firewall and VPN Server
Groupware
Domino for Linux, e-Bills - billing application for Linux, groupware PHProjekt, Lotus Domino for Linux, Neo Japan International GmbH - iOfficeV4, phpGroupware, twig
PPP
Connecting to AT&T Worldnet via ppp, How to Hook up PPP in Linux, Linux PPP HOWTO, Linux setup scripts for access to Algonet, SLIP/PPP Emulator HOWTO, The Diald Home Page, X-ISP
Big Brother System and Network Monitor
ig Brother is a combination of monitoring methods. Unlike SNMP where information is just collected and devices polled, Big Brother is designed in such a way that each local system broadcasts its own information to a central location. Simultaneously, Big Brother also polls all networked systems from a central location. This creates a highly efficient and redundant method for proactive network monitoring.
Cheops Network User Interface
Cheops is an Open Source Network User Interface. It is designed to be the network equivalent of a swiss-army knife, unifying your network utilities. Cheops does for the network what a file manager does for your filesystem.
Chklogs
Chklogs in a set of perl programs for the administration of Unix and other system log files.
Configuring Routing Protocols Under Linux
Understanding RIP, SPF, OSPF, and EGP.
Ethereal Network Analyzer
Ethereal is a network protocol analyzer for Unix and Windows. It has an extensive list of features.
GAP: GNU Administration Project
Goal: build a new environment for distributed OS administration, to let networks of heterogeneous machines administer themselves.
Intelligent Systems Monitoring for Linux, Unix and
Monitor your network of Linux, Unix and Windows 2000/NT from a single console and see the state of all your systems from one convenient place. You can quickly and easily develop your own site-specific knowledge bases to meet your local requirements.
Jedi-Sector One
Some useful and funny projects made by Frank DENIS aka Jedi/Sector One. Here are proFTP and security monitors.
LANdb
Provides network managers with a means of cataloging network connections.
libcw: C++ client/server application library
A C++ library for heavy duty networking applications. For Objects Management, Events, Signals, Timing, and Asynchrone Stream Devices.
Linux NIS(YP) Server and Tools
The Network Information Service (NIS) provides a simple network lookup service consisting of databases and processes. It was formerly known as Sun Yellow Pages (YP).
Linux Scalability
Aims to improve the scalability and robustness of Linux to support greater network server workloads more reliably.
NetLeds applet
A gnome applet that displays lights (RX, TX and COL) from a network device.
NetSaint Network Monitor
An active network monitor designed to run under Linux. NetSaint includes plugins to monitor several types of services (ftp, http, tcp port, and disk space). Contacts can be notified by email or pager when a problem occurs and is resolved.
NOCOL SNIPS Home Page
NOCOL is system and network monitoring software.
Performance Monitoring for Linux
A June 1999 Slashdot discussion about Performance Monitoring .
Secure Shell
Secure shell is a way of logging into another machine, using an encrypted connection, so that no-one can snoop on the connection as it passes over the network.
StreamModule homepage
Homepage of the StreamModule project. A library designed to simplify putting together programs that communicate over a network. Eschews threading and RPC style request response design.
Sysmon Home Page
Sysmon is a network monitoring tool designed to provide high performance and accurate network monitoring. Currently supported protocols include SMTP, IMAP, HTTP, TCP, UDP, Radius, NNTP, and PING tests
Zabbix
A software that monitors your servers and applications. Zabbix can be used for logging, monitoring, capacity planning, availability and performance measurement, and providing the latest information to a helpdesk.
[the cellar] Linux
Some www and network projects for Linux.