Algorithm used by FreeRADIUS to choose cipher suite used with EAP-TLS/TTLS

Walter Goulet wgoulet at gmail.com
Fri Feb 16 11:55:40 CET 2007


Alan DeKok wrote:

>Walter Goulet wrote:
>  
>
>>How does FreeRADIUS's rlm_eap module choose the cipher suite used for
>>EAP-TLS/TTLS sessions?
>>    
>>
>
>  It relies on OpenSSL to do the negotiation.
>
>  
>
>>RFC 2246 for TLS states that the client presents the list of
>>ciphersuites supported to the server and the server picks one that it
>>supports.
>>
>>Is there a way to configure FreeRADIUS to only use a specific set of
>>ciphersuites? The goal is that in some cases it may be desireable to
>>restrict incoming clients to use a particular suite.
>>    
>>
>
>  Yes.  See "cipher_list" in eap.conf.  It's documented.
>
>  Alan DeKok.
>--
>  http://deployingradius.com       - The web site of the book
>  http://deployingradius.com/blog/ - The blog
>- 
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>
>  
>
Thanks much Alan; I was looking at my older FreeRADIUS install (1.1.1!) 
which didn't have this described in eap.conf. I see it in the latest 
version.

Walter



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