The /proc/net/wireless file contains information about your wireless connection.
jason@darknet:~$ cat /proc/net/wireless Inter-| sta-| Quality | Discarded packets | Missed | WE face | tus | link level noise | nwid crypt frag retry misc | beacon | 22 wlan0: 0000 58. -52. -256 0 0 0 1 47 0 |
This information may also be retrieved with the iwconfig command. This command prints information about the wireless connection and the hardware the user is using to connect to an access point.
jason@darknet:~$ sudo iwconfig eth0 no wireless extensions. vmnet1 no wireless extensions. wlan0 IEEE 802.11bgn ESSID:"detportal" Mode:Managed Frequency:2.437 GHz Access Point: 00:1A:1E:57:44:20 Bit Rate=58.5 Mb/s Tx-Power=16 dBm Retry short limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off Link Quality=58/70 Signal level=-52 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:1 Invalid misc:60 Missed beacon:0 vmnet8 no wireless extensions. lo no wireless extensions. |
This shows the frequency of the access point and the signal strength. The bit-rate is also displayed, this is 58.5 megabytes per second on this network.
The ifconfig command may also be used to gain information about IP addresses on a wireless network.
jason@darknet:~$ sudo ifconfig wlan0 wlan0 Link encap:Ethernet HWaddr f4:b7:e2:c9:1b:e3 inet addr:172.29.59.171 Bcast:172.29.59.255 Mask:255.255.255.0 inet6 addr: fe80::f6b7:e2ff:fec9:1be3/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:176847 errors:0 dropped:0 overruns:0 frame:0 TX packets:103889 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:195813843 (186.7 MiB) TX bytes:13882413 (13.2 MiB) |
Get information about the wireless chipset.
jason@darknet:~$ lspci | grep -i wireless 02:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01) |
Get a list of channels on the access point using the iwlist command.
root@darknet:~# iwlist wlan0 channel wlan0 14 channels in total; available frequencies : Channel 01 : 2.412 GHz Channel 02 : 2.417 GHz Channel 03 : 2.422 GHz Channel 04 : 2.427 GHz Channel 05 : 2.432 GHz Channel 06 : 2.437 GHz Channel 07 : 2.442 GHz Channel 08 : 2.447 GHz Channel 09 : 2.452 GHz Channel 10 : 2.457 GHz Channel 11 : 2.462 GHz Channel 12 : 2.467 GHz Channel 13 : 2.472 GHz Channel 14 : 2.484 GHz Current Frequency:2.437 GHz (Channel 6) |
Information about the authentication capabilities.
root@darknet:~# iwlist wlan0 auth
wlan0 Authentication capabilities :
WPA
WPA2
CIPHER-TKIP
CIPHER-CCMP |