configure wireless on centos

ref: http://www.apolonio.com/node/40

You can check if the module was installed properly by running

/sbin/iwconfig

You should see the wlan0 interface

At this point you should be able to run the command

iwlist wlan0 scan 

and it should display all the SSID’s being broadcasted.

 

Setting up WPA2

From here on, it is assumed you will be logged in as root

Run the command where myssid is your ssid and mypassphrase is the passphrase for your wireless.

wpa_passphrase myssid mypassphrase

This should produce something like this

network={
        ssid="myssid"
        #psk="mypassphrase"
        psk=c22c1e6febc7875af85d033bbf15f5ca836633bac8eb16693fd58bff66fcb66c
}

 

Append that to  /etc/wpa_supplicant/wpa_supplicant.conf 

Here is a shortcut

wpa_passphrase myssid mypassphrase  >> /etc/wpa_supplicant/wpa_supplicant.conf

and make sure to add proto=WPA2

 

network={
        ssid="myssid"
        proto=WPA2
        #psk="mypassphrase"
        psk=c22c1e6febc7875af85d033bbf15f5ca836633bac8eb16693fd58bff66fcb66c
}

 

Now edit /etc/sysconfig/wpa_supplicant

The final line should is

DRIVERS="-Dndiswrapper"

Change that to

DRIVERS="-Dwext"

Start the wpa_supplicant service

service wpa_supplicant start

and you should be able to run dhclient to grab an IP address from your wireless network,

dhclient wlan0