[localhost@/]# iwlist wlan0 scanning
iwlist wlan0 scanning
wlan0     Scan completed :
          Cell 01 - Address: 00:19:5B:BE:8A:D9
                    ESSID:"Wi-Fi ROUTER"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Frequency:2.417 GHz (Channel 2)
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    Quality=101/100  Signal level=-45 dBm
          Cell 02 - Address: 8C:71:F8:C0:44:51
                    ESSID:"Wave2"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Frequency:2.412 GHz (Channel 1)
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    Extra:wpa_ie=dd180050f20101000050f20201000050f20201000050f20
20c00
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
                    Quality=101/100  Signal level=-49 dBm
          Cell 03 - Address: 90:F6:52:98:01:10
                    ESSID:"c2_free"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Frequency:2.422 GHz (Channel 3)
                    Encryption key:off
                    Bit Rates:54 Mb/s
                    Quality=100/100  Signal level=-71 dBm
          Cell 04 - Address: 00:27:22:E6:8A:96
                    ESSID:"c2_free"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.432 GHz (Channel 5)
                    Encryption key:off
                    Bit Rates:144 Mb/s
                    Quality=101/100  Signal level=-74 dBm
          Cell 05 - Address: 1C:7E:E5:B4:FF:99
                    ESSID:"qazxsw"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.437 GHz (Channel 6)
                    Encryption key:on
                    Bit Rates:72 Mb/s
                    Extra:wpa_ie=dd1c0050f20101000050f20202000050f2040050f202010
00050f2020c00
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD0E0050F204104A0001101044000102
                    Quality=100/100  Signal level=-72 dBm
          Cell 06 - Address: F8:C0:91:12:9B:48
                    ESSID:"onlime"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.447 GHz (Channel 8)
                    Encryption key:on
                    Bit Rates:150 Mb/s
                    Extra:wpa_ie=dd1a0050f20101000050f20202000050f2020050f204010
00050f202
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
                    Extra:rsn_ie=30180100000fac020200000fac02000fac040100000fac0
20000
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F204104A00011010440001011049000600372A0
00120
                    Quality=101/100  Signal level=-72 dBm
          Cell 07 - Address: 70:71:BC:F0:E2:C9
                    ESSID:"2454a4"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    Extra:wpa_ie=dd1c0050f20101000050f20202000050f2040050f202010
00050f2020c00
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD0E0050F204104A0001101044000102
                    Quality=100/100  Signal level=-59 dBm