UbuntuHelp:NetworkAdmin

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https://help.ubuntu.com/community/NetworkAdmin

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The Ubuntu graphical configuration tool ( “network-admin” ) is a tool to configure networking. This is an alternative, more native method to using the GNOME nm-applet (GNOME front end for NetworkManager). /!\ nm-applet does not use the standard NetworkAdmin file /etc/network/interfaces to store the Wireless Network settings, so you will not be able to use ifup and ifdown commands to start / stop the Network adapter. This may make it harder to diagnose connection problems.

Start

There are two ways to start network-admin first thing is you can use your terminal:

• to type “sudo network-admin” it will start up
• or you can go to System—>Administration —>Networking

Profiles And Settings

network-admin stores the profiles -locations- in: /etc/gnome-system-tools/network/profiles.xml During startup, the system will activate the Network Admin settings kept in the file 模板:/etc/network/interfaces}, where the Networking tool saves its settings. Removing those (and having them replaced with new ones, after doing a backup copy of the old ones) may help some if they are having network problems, specially problems dealing with saving settings. You may diagnose these network settings by activating and deactivating the wireless network interface from the Terminal, which shows some diagnostic messages:

  sudo ifdown wlan0
  sudo ifup wlan0
  

You may also diagnose the network adapter status with commands:

  ifconfig
  iwconfig
  
  dmesg
  tail /etc/var/messages
  

See also

• http://www.debianadmin.com/ubuntu-networking-for-basic-and-advanced-users.html
• http://www.ubuntugeek.com/ubuntu-networking-configuration-using-graphical-tool.html
• http://www.linuxtopia.org/online_books/system_administration_books/ubuntu_starter_guide/ch07.html
• https://wiki.ubuntu.com/ZeroConfNetworking
• WifiDocs/WiFiHowTo
• https://wiki.ubuntu.com/NetworkRoaming
• Ubuntu Forum : Networking & Wireless

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