Linux wireless network settings (use of wpa_supplicant)

Host environment: Gentoo Linux 3.1.10
The WPA Supplicant toolkit allows you to connect to those APs that use WPA. Because it is only a beta version, its configuration method will often change-even so, it can work well in most cases.
After wap_supplicant is installed, you can configure the Wireless Access Point Network by modifying/etc/wpa_supplicant/wpa_supplicant.conf.
The following is an instance of the configuration file.
 
# Do not modify the following line, otherwise it will not work properly
Ctrl_interface =/var/run/wpa_supplicant
 
# Ensure that only the root user can read the WPA Configuration
Ctrl_interface_group = 0
 
# Use wpa_supplicant to scan and select an AP
Ap_scan = 1
 
# Simple scenario: WPA-PSk password verification method. PSK is an ASCII password phrase. All valid encryption methods allow connection.
Network = {
Ssid = "simple"
Psk = "very secret passphrase"
# The higher the priority, the earlier the match can be made.
Priority = 5
}
 
# It is the same as the previous setting, but requires scanning of the specific SSID (for those APs that refuse to broadcast the SSID)
Network = {
Ssid = "second ssid"
Scan_ssid = 1
Psk = "very secret passphrase"
Priority = 2
}
 
# Only use the WPA-PSK method. Allow a combination of any valid encryption methods
Network = {
Ssid = "example"
Proto = WPA
Key_mgmt = WPA-PSK
Pairwise = CCMP TKIP
Group = ccmp tkip WEP104 WEP40
Psk = 06b4be19da289f475aa46a33cb793029d4ab3db7a23ee92382eb0417c72ac7bb
Priority = 2
}
 
# Plaintext connection mode (WPA and IEEE802.1X are not used)
Network = {
Ssid = "plaintext-test"
Key_mgmt = NONE
}
 
# Sharing the WEP Key Connection method (WPA and IEEE802.1X are not used)
Network = {
Ssid = "static-wep-test"
Key_mgmt = NONE
Wep_key0 = "abcde"
Wep_key1 = 0102030405
Wep_key2 = "1234567890123"
Wep_tx_keyidx = 0
Priority = 5
}
 
# Shared WEP Key Connection method (without WPA and IEEE802.1X), use the shared key verification method
Network = {
Ssid = "static-wep-test2"
Key_mgmt = NONE
Wep_key0 = "abcde"
Wep_key1 = 0102030405
Wep_key2 = "1234567890123"
Wep_tx_keyidx = 0
Priority = 5
Auth_alg = SHARED
}
 
# Use WPA-None/tkip in the ibss/ad-hoc Network
Network = {
Ssid = "test adhoc"
Mode = 1
Proto = WPA
Key_mgmt = WPA-NONE
Pairwise = NONE
Group = TKIP
Psk = "secret passphrase"
}
 
--
Below is my configuration file
 
Ctrl_interface =/var/run/wpa_supplicant
Ap_scan = 1
 
# Home Network
Network = {
Psk = "yming0221"
Priority = 1
Ssid = 79616e277320776921356c657373
Mode = 0
Bssid = E0: 05: C5: 17: F8: 2C
Key_mgmt = WPA-PSK
}
#
Network = {
Ssid = "351471 azjlb"
Psk = "CCTV1-CCTV2-KTV-1987"
Priority = 2
}
 
Restart the wlan0 connection.
/Etc/init. d/net. wlan0 restart

By Yan Ming -- To Be a Linux Kernel Hacker