lo        no wireless extensions.

eth0      no wireless extensions.

wifi0     no wireless extensions.

vboxnet0  no wireless extensions.

ath0      IEEE 802.11g  ESSID:"linksys"  Nickname:""
          Mode:Managed  Frequency:2.412 GHz  Access Point: 00:06:25:D6:4D:91   
          Bit Rate:11 Mb/s   Tx-Power:17 dBm   Sensitivity=1/1  
          Retry:off   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=49/70  Signal level=-47 dBm  Noise level=-96 dBm
          Rx invalid nwid:102  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0