codice:
susina:/home/ale # iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11g  ESSID:"LiberoWifi"
          Mode:Managed  Frequency:2.417 GHz  Access Point: 00:01:38:88:56:6D
          Bit Rate:54 Mb/s   Tx-Power:15 dBm
          Retry limit:15   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=92/100  Signal level=-39 dBm  Noise level=-40 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:385   Missed beacon:0