Networking

• Dante
  Dante is a free implementation of the proxy protocols socks version 4, socks version 5 (rfc1928), and msproxy. It can be used as a firewall between networks. ...
  
• LAN Management System
  LAN Management System is a set of PHP, C, and Perl applications for management of local area networks. ...
  
• EnderUNIX Hafiye
  Hafiye is a POSIX-compliant, customizable TCP/IP packet sniffer. ...
  
• Static IP configurator
  Network configurator for static IP address by using kommander. ...
  
• Exim
  Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet. It is freely available under the terms of the GNU General Public Lic...
  
• Novell Client for LInux
  Novell Client for Linux. GUI for ncpfs modul (http://freshmeat.net/projects/ncpfs/). ...
  
• TCPDB
  TCPDB is a Web application to keep track of your TCP/IP addresses and hosts. TCPDB is suited for both small and large networks with many locations and subnets. Up to one A Class or 16777216 addre...
  
• Poptop-PPTP Server
  PPTP stands for Point to Point Tunneling Protocol. It was developed by a consortium including Microsoft and is used for establishing VPN (Virtual Private Network) tunnels across the Internet. This a...
  
• SSL-Explorer
  SSL-Explorer is the world's first open-source SSL-based VPN solution of its kind. ...
  
• OpenVPN
  OpenVPN is an easy-to-use, robust, and highly configurable VPN (Virtual Private Network) daemon which can be used to securely link two or more private networks using an encrypted tunnel over the in...
  
• L2TP
  L2TP is a Layer 2 Tunneling Protocol VPN client/daemon for Linux and other POSIX-based OSs. It is derived from L2TPd 0.61. ...
  
• amrita VPN
  Amrita VPN is an easy-to-use open source VPN solution that runs on the GNU/Linux platform. The implementation is fully in userspace and requires no kernel patches or enhancements. It uses openssl l...
  
• VTun
  VTun is the easiest way to create Virtual Tunnels over TCP/IP networks with traffic shaping, compression, and encryption. ...
  
• VPNmonitor
  VPNmonitor is a free Java tool to observe network traffic. Network administrators can use it to monitor VPN (PPTP and IPSec) and SSL (HTTPS) connectivity of wireline/wireless networks. ...
  
• tinc
  tinc is a Virtual Private Network (VPN) daemon that uses tunneling and encryption to create a secure private network between multiple hosts on the Internet. ...
  
• OpenVMPS
  OpenVMPS implements a Cisco switch-compatible VLAN policy management server. With VMPS-capable switches, ports can be dynamically assigned to VLANs based on the MAC address of the connecting host. ...
  
• VPNS
  VPNs is a set of scripts to easily set up multiple VPNs using the vpnd daemon. ...
  
• Linux VPN Masquerade
  Linux VPN Masquerade allows you to use an IPSec or PPTP VPN host (client or server) behind a Linux masquerading firewall. ...
  
• Ethereal
  Ethereal is a free network protocol analyzer for Unix and Windows. It allows you to examine data from a live network or from a capture file on disk. You can interactively browse the capture data, vie...
  
• MyNetMonitor
  Mynetmonitor is a GTK 2 net monitor with system tray support. It shows various status icons in the GNOME 2, KDE 3, XFCE 4 system trays, uses connect and disconnect commands, and shows net speeds and ...
  
• etherape
  EtherApe is a graphical network monitor for Unix modeled after etherman. Featuring link layer, ip and TCP modes, it displays network activity graphically. Hosts and links change in size with traffic...
  
• SmokePing
  SmokePing is a network latency monitor which works in a way that is similar to MRTG. It measures network latency to a configurable set of destinations on the network, and displays its findings in eas...
  
• RRDTool
  RRD is the Acronym for Round Robin Database. RRD is a system to store and display time-series data (i.e. network bandwidth, machine-room temperature, server load average). It stores the data in a ve...
  
• OS-SIM
  OSSIM aims to unify network monitoring, security, correlation, and qualification in one single tool. It combines Snort, Acid, MRTG, NTOP, OpenNMS, nmap, nessus, and rrdtool to provide the user with f...
  
• Big Sister
  Big Sister is an SNMP-aware monitoring program consisting of a Web-based server and a monitoring agent. It runs under various Unixes and Windows. ...