A3Com is a set of Perl 5 modules which allow manipulation of 3Com SuperStack II 3900/9300 and CoreBuilder 3500 LAN switches.
Apcon is a systemtray application for KDE, that makes it very easy for users to specify and manage different network/connection profiles and connect/disconnect to/from them. Furthermore a user can get several details and informations about a connection.
Cisco Template Manager
Cisco Template Manager (CTM) is a set of tools that make it easy to manage Cisco configurations over a whole network based on your self-defined templates.
Connection Manager allows users to preconfigure connection methods for various remote systems, such as SSH, rdesktop, VNC, telnet, etc.
etcnet is intended to be the replacement of net-scripts in ALTLinux and RedHat Linux.
HTBGUI is a frontend application for HTB traffic manipulation routines on Linux.
a KDE application to configure TCP/IP settings on a Linux machine
launch2net for Linux is a mobile Internet connection manager for Asus Eee PCs running Linux. launch2net already includes connection settings for most mobile network operators worldwide, eliminating the need to search for and enter cryptic settings like user name, password, or APN address. launch2net for Linux will display the time and data consumption for the current session as well as for a period of time. The software supports many USB modems from leading manufacturers.
Nagios Automated Configuration Engine
NACE is a generic query engine used to automatically create host and service definitions for hosts on the network.
netGo is a distribution-independent networking tool (written in Qt) for changing network settings quickly and easily. It is intended for laptop owners, who often need to change network settings when relocating.
NetSwitch is a GNOME panel applet for switching between network profiles. The applet is just a user interface for the netprofiler program. It supports applying (activating) a profile, saving the current profile (or DHCP enabled profile), and deleting a profile.
Netswitch make easy to switch between different places with your laptop. You can change your network configurations, and use proxies or change your IP address.
Perl/Tk Time Client
Perl/Tk Time Client gets your system time and compares it with the time specified by a timeserver (Time protocol - TCP port 37). It can be used to check the accuracy of your system clock.
plconfig is a tool for configuring HomePlug powerline bridges.
an interactive program for managing the hardware addresses (MAC) of ethernet devices on your computer. It supports manually changing the MAC, generating random addresses, and applying different vendor prefixes to the current address. It also allows the user to import their own lists of hardware addresses and descriptions that can be navigated from within the Travesty interface
This small tool consists of two executables, udp_send2 and udp_recv2, implementing plaintext non-interactive data transfer over UDP/IPv4 with a preset transfer rate.
Uncle Unc is a framework for network data-sharing, enabling remote administration and access to a range of services from a range of clients, using a simple text-based protocol that isn't tied to any platform, operating system or programming language.
Why Can't I Connect?
Why Can't I Connect? makes it easy to diagnose TCP/IP connection problems. It traces through all steps of the process and gives error codes, descriptions, and possible solutions for all TCP/IP errors.
Xnetintf is an X11-based tool which manages a network interface. It provides a continuous visual reminder of network state, and an easy way to toggle it (i.e. bring the interface up or down). It allows for a interface-specific set of commands to be run after the state change completes, as well as a command line interface.
Yngvi allows Apache Webmasters to determine filesystem locations that are accessible through the server -- including those which have not been explicitly published. It's good for finding inadvertent exposures or unintended configuration inheritances.