Help on TLS+Active Directory
Alan DeKok
aland at deployingradius.com
Wed Dec 2 08:05:14 CET 2009
gera wrote:
> BUT, we noted an interesting behaviour. If the client specify Windows to use
> another username to login, although freeradius complaints that the user
> doesn't exist on ldap, it seems it still accepts this user, as long as the
> certificate is fine.
That's how EAP-TLS works.
> So, in this case, if the user isn't allowed to login
> because of simultaneous use, he still can change the username which he uses
> specifying another one (whichever, even if it doesn't exist) and voilá! He can
> now log in.
>
> I'm sure I'm missing something, but I'm not sure what.
You need to update the CRL to revoke the certificate. The user then
can't use it for authentication.
Alan DeKok.
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