Ubuntu uses NetworkManager connection WiFi (802.11) network

&http://www.aliyun.com/zixun/aggregation/37954.html ">NBSP; Both Ubuntu and Fedora use the NetworkManager to manage the network connections by default. If your GNU is successfully installed to the wireless local area network (Wireless LAN) interface, the computer also detects the NetworkManager on the program state Pass (Notification area) The small icon will list all detected wireless local area networks and their signal strength. Wireless local Area network Essid is next to a key-like icon indicating that the network has WEP or WPA protection (as shown in the debian.hk, Fosscafe, and WiFi networks).

To connect to a wireless local area network, simply click to select the network. If the connected network uses WEP, WPA, or WPA2 (802.11i), NetworkManager displays a dialog box asking the network:

* Wireless Security-the security protocols used by the wireless local area network, including the following:
o WEP 128-bit passcode
o WEP 40/104 bit Hex
o WEP 40/128-bit ASCII
o WPA Personal-for WPA or WPA2 (802.11i)
* Password (Password)-WEP/WPA key for wireless local area network.

Once you have entered the WEP/WPA key, you can press "login to the network" (login receptacle).

If the network is using WPA, NetworkManager needs to store the WPA key in a safe place, typically saved by Gnome Keyring. At this point, gnome Keyring will ask you to enter the default keyring password. If your account does not have a default key ring, GNOME Keyring will help you build and ask you to set the password:

Successfully connected to the wireless local area network, NetworkManager's small icon will become a ladder to indicate the strength of the network signal.