Hello Artur, 

On Sun, 21 Mar 2004, Artur Hecker wrote:

> > Trouble is: There is no connection between the two. Assume the following 
> > situation:
> 
> yes. the issue is known though: it has been discussed several times on 
> the list so far (please, search the archives). i think, raghu was the 
> first to mention it but i could be wrong...
> 

I seem to be completly incapable to dig for this information (tried it
before, tried it again right now, will try it again, I just seem to be
unable to come up with the right search words - this is an unusual
experience - am I getting old?). I appologize for any noise I therefore
"have" to generate here.

> the trouble with this is that people have different understandings of 
> what should be in the User-Name. Windows XP e.g. automatically puts the 
> CN in it (but as you said before, you can override it). however, the 
> mail address would be a reasonable alternative to CN. the problem is 
> even worth when you are using proxying, since the CN typically will not 
> contain the realm but the User-Name should do so if you want proxying to 
> happen, so typically you can not just strcmp the strings but need some 
> handler for that. briefly, it depends on what you certify and what you 
> do with it.

Personally, I favour a UID field within the certificate, but others have 
different requirements, agreed.

> so, it's still unresolved because the requirements vary a lot.

I can live with this, as long as there is _some_ way to solve this.

> > Is this possible with current sources? Anybody working on it? Would this 
> > be simple to add? It seems the current EAP-TLS implementation in 
> 
> yes, in the EAP-TLS module you can add a line to check whether the 
> EAP-Identity (which is always equal to the User-Name if you trust your 
> NASes) equals whatever you have in the certificates, e.g. the CN.

Can you give any hints? I briefly looked at the source to find any 
"hidden" configuration options but couldn't find anything tha 
looked promising at first sight.

> you can also write an external authorization script which would do that 
> checking. the certified content is not encrypted, so you can freely read it.
> 
> i think there are more solutions in the list-archive, search it.

:-)    ... still trying

> all issues you talk about are true: accounting without any changes is a 
> problem. as explained above, due to the quite different requirements 
> there is imho no such thing as a general solution.

There never is...

thanks for your quick reply

peter



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