Free switch network configurations software for linux

Network Configurator is a network configuration tool.
Network Configurator is user-level tool that aims to make network configuration more easy. It have command line and GTK+ interface.
Supported network types:
- Ethernet
- PPPoE
- PPTP
- Wi-Fi (no WEP and WPA for now)
- dialup

network-config is a simple network configuration tool.

Network-config is a simple and easy to use program that helps configuring the network interfaces for linux-based operating systems. It allows to have multiple configurations for the same computer and to easy configure NAT for internet sharing.

It can also be used to scan for wireless networks. It is written in perl and uses gtk2+, but also works as a command line program.

SwitchProxy Tool is a Firefox extension which lets you manage and switch between multiple proxy configurations quickly and easily.

You can also use it as an anonymizer to protect your computer from prying eyes.

NOTE: In Firefox you can use the toolbar element to save space

DNA (Deep Network Analyser) is an open, flexible, and extensible deep network analyzer server and software architecture for passively gathering and analyzing network packets, network sessions, and applications protocols.
Deep Network Analyser project is designed to be used for Internet security, network management, intrustion detection, protocol and network analysis, information gathering, and network monitoring applications.
Main features:
- Extensible Java based network sensor (processing layers 2-7)
Configurable processing and output:
- Packet flows like Ethereal
- IP Flows like CISCO netflow
- Stateful Sessions (client/server flow pairs)
- Application protocol element output
- Configurable and extensible application protocol element parsing.
- Application protocol parsing toolkit APIs allows for new protocol parser to be easily developed and extended
- Targeting based full session capture facility, like a realtime targeted TCPDump.
- Flexible targeting from IPAddr, Port tuple to Application sensitive targeting.
- Configurable and extensible output forwarding (file, DB, Streams, JMS, RMI, etc.)
- Extensible realtime collection portable to many OS/Packet processing environments
Easily adaptable to packet processing environments:
- Specialized linux drivers mechanismon
- Network Appliances
- Network Switches / Routers
- Highly mutithreaded for increased performance over multi processor environments
Enhancements:
- Adoption of OpenAdaptor(tm) as the Output Adapter mechanism.
- Support for local-only administration.
- A new targeted packet capture parser, new run scripts, and a new install mechanism.
- Many bugfixes.

Network Tracker application is a user (MAC) tracker daemon, for big LANs (campus).
The Network Trackerd builds a table which records which user is connected on which port of a switch by scanning the devices with SNMP in your inventory which is in a MySQL database. Trackerd keeps that table up-to-date by scanning the network regularly.
Thus, you will have the opportunity to know exactly where a user (MAC, IP, UID) is connected on your network !
Your devices are also checked with ping and SNMP, and you are informed with e-mail when any of the devices is not alive.
More over, you may produce various reports about your network infrastructure on the web (cgi) or by using other tools.
Network tracker eases especially to find and shutdown the switch port of the users, when their PCs on the network start to spread viruses or warms using lots of bandwith; so you are able to stop that kind harmfull traffic on the network.
Main features:
- Collects all the MAC addresses and port numbers from CAM tables of the switches.
- Finds IP addresses of the MACs from ARP tables of the routers.
- Finds LDAP uid of the user.
- Check devices on the network with both ping and SNMP for better reliability.
- The daemon sends 2 self check e-mail per day.
- Developped with C.
Enhancements:
- trackerd is now multi-threaded and works very quickly because a new thread is created for each network device.
- MAC tracking code has been reimplemented for multi-threaded use.
- Wireless access point support has been added.
- gnuplot graphics are prepared, showing the active number of users like MRTG graphs.
- tracker now accepts MAC addresses in free format.

Ruby Iptables NEtwork Displayer project draws an SVG from a Linux IP table generated by "iptables-save".

KNetworkManager is the KDE front end for NetworkManager. KNetworkManager project provides a sophisticated and intuitive user interface which enables users easily to switch their network environment.

The range of functions encompasses the features implemented by NetworkManager daemon. Up until now NetworkManager supports:

Wired Ethernet Devices (IEEE 802.3)
Wireless Ethernet Devices (IEEE 802.11): Unencrypted, WEP, WPA Personal, WPA Enterprise
Virtual Private Network (VPN): OpenVPN, VPNC
Dial-Up (PPP)

How does it work?

For both, Wireless LAN and Wired LAN, NetworkManager supports devices known to HAL. Unless working in offline mode, NetworkManager tries to keep the system connected at any time. For this, NetworkManager follows the following policy.

Once started, NetworkManager asks HAL about available network interfaces. If a wired network interface with a carrier is found, NetworkManager connects to this. Either by DHCP (default) or by setting up previously defined static configuration. Later on, when KNetworkManager starts up, NetworkManager will expose its information about network devices and wireless networks found by scanning to the applet.

At this point, if a user decides to unplug the wired connection, NetworkManager will not connect to an arbitrary wireless network. By default all available networks are untrusted. Only if a user decides to connect to a network manually once, this specific network n henceforth being marked as trusted.

n = { ESSID, Hardware address or addresses of the access point}

The trusted networks are stored individually for each user. KNetworkManager stores them and informs NetworkManager about the known, trusted networks. If a wired connection drops due to unplugging the cable NetworkManager will automatically connect to a trusted network. As this step was done without user interaction, NetworkManager will reconnect to the wired connection once it has a carrier.

If a user joins a wireless network by manual intervention (e.g. user clicks on a network listed in the context menu of KNetworkManager or connects to a hidden wireless network), NetworkManager will take down any previous connection. If one unplugs the wired connection after such a step, NetworkManager will not connect to the wired connection once it has a carrier.