lo        no wireless extensions.

eth0      no wireless extensions.

vboxnet0  no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:"FATECSUL04"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: C0:3F:0E:3B:FD:40   
          Bit Rate=48 Mb/s   Tx-Power=14 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key: <hidden>
          Power Management:off
          Link Quality=31/70  Signal level=-79 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:153   Missed beacon:0