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Old 06-23-2005, 12:47 PM   #1
spondootre
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Registered: Jun 2005
Distribution: Mandriva 2005 limited ed.
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How can i enable WPA pre-shared key, wireless?


Hi all,

I have just had some great help to get my wireless connection up and running on Mandriva via my D-Link DWL-G630 PCMCIA card. However I have got the wireless security disabled on my router and this is no good for my area as there are several wireless networks close by and I don't want any opportunist leaching.

My questions are, how can I go back to using WPA Pre-Shared Key as I have set up on my windows systems?
Also, Can anyone tell me how to connect to other networks when I roam with my laptop? The current network is setup for auto DHCP and connects automatically when I plug the card in. When I use the GUI network tool and try to connect that way to my network it doesn't which leads me to think it won't work when I roam??

Thanks for any help or suggestions you can give........


Cheers
Malc
 
Old 06-24-2005, 07:01 AM   #2
Austin_KW
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Registered: Jun 2005
Location: Dublin
Distribution: Slackware 10-1
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For roaming you can use iwlist to discover the SSID of any available networks eg (my interface is ra0)

Code:
bash-3.00# iwlist ra0 scan
ra0       Scan completed :
            Cell 01 - Address: 00:30:F1:FF:6D:49
                    Mode:Managed
                    ESSID:"foundEssid"
                    Encryption key: on
                    Channel:11
                    Quality:64/100  Signal level:-195 dBm  Noise level:-256 dBm
Then you can connect to foundEssid

Code:
iwconfig ra0 channel 0 
iwconfig ra0 mode managed 
iwconfig ra0 rate auto
iwconfig ra0 essid foundEssid
You will then want to use DHCP to get an IP address on the new network
Code:
dhcpcd  -k ra0             # Kill old 
dhcpcd  -d -h $(hostname) ra0

I think WPA support depends on the hardware and driver combination. I use a native driver. My wireless card suports WPA in hardware and is configured using the private interface iwpriv.
Code:
iwpriv ra0 set AuthMode=WPAPSK
iwpriv ra0 set EncrypType=TKIP
iwpriv ra0 set WPAPSK="password"
If you are using the ndiswrapper or you hardware does not support WPA, you will need to configure the wpa_supplicant
 
Old 06-24-2005, 10:46 AM   #3
spondootre
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Registered: Jun 2005
Distribution: Mandriva 2005 limited ed.
Posts: 39

Original Poster
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Thanks for that info on roaming, i'll give it a go next time.

I am using MADWIFI drive for the card and I was given this link -

http://hostap.epitest.fi/wpa_supplicant/

i've downloaded the wpa_suppliment and have yet to make the commitment to give it a go!! It seems a bit daunting for a newb, i'll try it later and see how I get on.


Thanks for your help
Malc
 
Old 06-24-2005, 11:10 AM   #4
Austin_KW
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Registered: Jun 2005
Location: Dublin
Distribution: Slackware 10-1
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If it seems a bit daunting, why not try WEP. For me it was as simple as
Code:
iwconfig ra0 enc xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xx
replace ra0 with you inteface & XXs with your key

Not as good as WPA, but better than leaving you network open until you get WPA going.
 
Old 06-24-2005, 11:41 AM   #5
spondootre
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Registered: Jun 2005
Distribution: Mandriva 2005 limited ed.
Posts: 39

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Brilliant!! That's better than nothing!! I've just done that and it works fine. Just a couple of questions :

How do I automate that process? I think I can do it through the GUI tool but what would I need to do manually? Can I add that command to a config file?

How do I turn off the encoding for when I am roaming?? is it just "iwconfig ath0 off"

Thanks
Malc
 
Old 06-24-2005, 01:12 PM   #6
Austin_KW
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Registered: Jun 2005
Location: Dublin
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To turn encryption off
Code:
  iwconfig <interface> enc off

There is a number of ways to do config automatically on boot[list=1] Your GUI may let you define a profile that is loaded on boot.[/list=1][list=2] You may be able to put the config in rc.wireless.conf to be loaded by rc.wireless[/list=2] [list=3] As I play about with configurations,
I simply just add the commands to my rc.local
Code:
# Setup Wireless Network interface
echo "Configuring Wireless ra0"

echo "/sbin/ifconfig ra0 inet down"
/sbin/ifconfig ra0 inet down

iwconfig ra0 channel 0 
iwconfig ra0 mode managed 
iwconfig ra0 rate auto
iwconfig ra0 rts 2312
iwconfig ra0 frag 2312
iwconfig ra0 enc xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xx
iwconfig ra0 essid yourESSID

if [ -r /etc/dhcpc/dhcpcd-ra0.pid ]; then
    echo "dhcpcd -k ra0"
    dhcpcd  -k ra0
    sleep 3
fi
echo "dhcpcd -d -h $(hostname) ra0"
dhcpcd  -d -h $(hostname) ra0

echo "/sbin/ifconfig ra0 inet up"
/sbin/ifconfig ra0 inet up
Having these commands in rc.local reminds me of the necessary steps to config to a new network[/list=3]
 
  


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