[Cialug] Corp. WiFi

Matthew Lechleider matthew at lechleider.com
Fri May 22 10:14:07 CDT 2009


Try the command iwlist

It will list all of the access points in your area even if the SSID is 
hidden.  iwlist will also list the mac address.

If you have physical access to the access point, find the MAC address.

iwlist will have some other useful information you can verify such as 
type of encryption.

Using aircrack-ng you can capture the traffic to find out additional 
information.



jrnosee at gmail.com wrote:
> Ok, my office is set up with a...dificult...wireless configuration.  
> I'm convinced I'm almost online, but need a hand.  Here's what I've 
> got going on.
>
> Running Ubuntu 9.04
>
> Corp wifi config:
> Windows users use the Funk Software Odyssey Access Client (OAC)
> Hidden SSID - I do know what it is though.
> Looks like we use 8021x key handling (OAC shows WEP encryption 
> generated automatically)
> Association Mode: open (?)
> Auth Protocol: EAP/TTLS
> TTLS inner Protocol: PAP/Token Card (we use RSA key fobs w/ generated 
> numbers)
> Anonomous identity: anonomous
> identity: RAS keyfob userid
> password: pin+RAS keyfob
> company secured CA file... XXXXXX.cer
>   - I converted this using openssl from der to pem and placed in 
> /etc/ssl/certs/XXXXXX.pem (linked to .crt file..used the proper method 
> to do this..can't remember it right now)
>
> I've tried to set this up using network manager.  It's the closest 
> I've gotten.
> It associates with the access point and attempts authorization.  I 
> don't have the whole error with me (laptop's at home right now) but I 
> think this is the cause of my problem:
> "TLS: Certificate verification failed, error 20 (unable to get local 
> issuer certificate) wap_supplicant"
>
> tried wircd with mostly the same results
>
> tried using command line wpa_supplicant with .conf file and -dd for 
> extra debugging since most things I saw on google reccomended this for 
> testing.  I can't get this method to associate with the hidden ssid 
> access point.
>
> Anyone have any thoughts?  I can post the full error if needed after 
> work hours when I'm home.
>
> Thanks!!
>
> --Justin
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