A trick for configuring freerad to authenticate multiple NAS withdynamic IPs

[Arran Cudbard-Bell]

On 26 Aug 2011, at 12:08, Grace M. wrote:

> Thank you Arran for quick reply.
>  
> Since the NAS(s) will be in other networks, they will appear to my server as dynamic *public ips* and sometimes the NAS(s) will be multiple
> in one external NATed network (such will appear as from 1 public ip). In this case I will need to specify a range of puplic ips??

Yes, either that or use the dynamic-clients virtual server in raddb/sites-available to just accept any client. Then use the same shared secret for all external clients.

If you're using an EAP method with some kind of TLS layer then the shared secret doesn't really do anything useful, other than providing crude protection against DoS attacks (even then that won't always work).

Incidentally if you are doing PAP or CHAP then you should not be sending the RADIUS packets over a public network without using RADSEC or running them through some sort of encrypted tunnel. 

-Arran



>  
> Don't know am making sense.
>  
> Grace
> ----- Original Message -----
> From: Arran Cudbard-Bell
> To: FreeRadius users mailing list
> Sent: Friday, August 26, 2011 2:55 PM
> Subject: Re: A trick for configuring freerad to authenticate multiple NAS withdynamic IPs
> 
> 
> On 26 Aug 2011, at 11:49, Grace M. wrote:
> 
>> Guyz,
>>  
>> I have FreeRADIUS Version 2.1.10 working with mysql to authenticate uses connected to a number of NAS(s).
>>  
>> Now, I would like to authenticate NAS(s) which should connect to my freerad from other networks (outside my lan) which have dynamic IPs.
>>  
>> Anyone with a trick on how to configure clients.conf for that?
> 
> You can specify IP ranges for clients? Would this help? Or are the dynamic clients extra dynamic?
> 
> -Arran
> 
> Arran Cudbard-Bell
> a.cudbardb at freeradius.org
> 
> RADIUS - Half the complexity of Diameter
> 
> 
> 
> -
> List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html
> -
> List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html

Arran Cudbard-Bell
a.cudbardb at freeradius.org

RADIUS - Half the complexity of Diameter

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freeradius.org/pipermail/freeradius-users/attachments/20110826/55b17ad6/attachment.html>