今更だけど無線LANの設定をしてみた

今までNetworkManagerで無線LANの設定をしていたけど
コンソールから設定してみたのでメモ


まず無線のインターフェイス名を調べる
うちの場合はeth1で認識されていた

$ iwconfig

次に接続したいアクセスポイントの情報を調べる

# iwlist eth1 scan
eth1      Scan completed :
          Cell 01 - Address: XX:XX:XX:XX:XX:XX
                    ESSID:"FON_FREE_INTERNET"
                    Mode:Managed
                    Frequency:2.417 GHz (Channel 2)
                    Quality:4/5  Signal level:-66 dBm  Noise level:-92 dBm
                    Encryption key:off
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
          Cell 02 - Address: XX:XX:XX:XX:XX:XX
                    ESSID:"MyPlace"
                    Mode:Managed
                    Frequency:2.417 GHz (Channel 2)
                    Quality:4/5  Signal level:-66 dBm  Noise level:-92 dBm
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s

/etc/sysconfig/wpa_supplicant を編集

# Use the flag "-i" before each of your interfaces, like so:
#  INTERFACES="-ieth1 -iwlan0"
#INTERFACES=""
INTERFACES="-ieth1"

# Use the flag "-D" before each driver, like so:
#  DRIVERS="-Dwext"
#DRIVERS=""
DRIVERS="-Dwext"

# Other arguments
#   -u   Enable the D-Bus interface (required for use with NetworkManager)
#   -f   Log to /var/log/wpa_supplicant.log
OTHER_ARGS="-u -f /var/log/wpa_supplicant.log"

パスフレーズの暗号化を行い次のステップで使用

$ wpa_passphrase MyPlace xxxxxxxxxx
network={
        ssid="MyPlace"
        #psk="xxxxxxxxxx"
        psk=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

iwlistとwpa_passphraseの結果を参考に /etc/wpa_supplicant/wpa_supplicant.conf を編集

ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel

network={
        ssid="MyPlace"
        key_mgmt=WPA-PSK
        proto=WPA
        pairwise=CCMP
        group=CCMP
        psk=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

上記の設定が問題なく済んでいれば
以下のコマンドで接続できる、ハズ

# ifdown eth1
# service wpa_supplicant start
# dhclient eth1

dhclientでなくifupを使うとうまくできないので調べ中