NAC guest server with RADIUS authentication for guests issue.

Unanswered Question
Mar 11th, 2010

Hi all,

We have just finally successfully installed our Cisco NAC guest server. We have version 2 of the server and basically the topology consists of a wism at the core of the network and a 4402 controller at the dmz, then out the firewall, no issues with that. We do however have a few problems, how can we provide access through a proxy without using pak files obviously, and is there a way to specify different proxies for different guest traffic, based on IP or a radius attribute etc.

The second problem is more serious; refer to the documentation below from the configuration guide for guest nac server v2. It states that hotspots can be used and the Authentication option would allow radius authentication for guests, I’ve been told otherwise by Cisco and they say it can’t be done, has anyone got radius authentication working for guests.

https://www.cisco.com/en/US/docs/security/nac/guestserver/configuration_guide/20/g_hotspots.html

-----START QUOTE-----
Step 7
https://www.cisco.com/en/US/i/templates/blank.gifFrom the Operation mode dropdown menu, you can select one of the following methods of operation:

https://www.cisco.com/en/US/i/templates/blank.gifPayment Provider—This option allows your page to integrate with a payment providing billing system. You need to select a predefined Payment Provider from the dropdown. (Refer to Configuring Payment Providers for details.) Select the relevant payment provider and proceed to Step 8.

https://www.cisco.com/en/US/i/templates/blank.gifSelf Service—This option allows guest self service. After selection proceed to Step 8.

https://www.cisco.com/en/US/i/templates/blank.gifAuthentication—This option allows RADIUS authentication for guests. Proceed to Step 9.
----- END QUOTE-----

Your help is much appreciated on this, I’ve been looking forward to this project for a long time and it’s a bit of an anti climax that I can’t authenticate guests with radius (We use ACS and I was hoping to hook radius into an ODBC database we have setup called open galaxy)

Regards
Kevin Woodhouse

I have this problem too.
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Scott Fella Fri, 03/12/2010 - 05:12

Well I will try to answer your 2nd questions.... will it work... yes.  It is like any other radius server (high end:))  But why would you do this for guest.... there is no reason to open up a port on your FW and to add guest accounts to and worse... add them in AD.  Your guest anchor can supply a web-auth, is able to have a lobby admin account to create guest acounts and if you look at it, it leaves everything in the DMZ.

Now if you are looking at the self service.... what does that really give you.... you won't be able to controll who gets on, people will use bogus info and last but not least.... I have never gotten that to work right.  Had the BU send me codes that never worked, but again... that was like a year ago and maybe they fixed that.  That is my opinion.

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