Alain Perry <[EMAIL PROTECTED]> wrote:
> I want users to be able to authenticate over an insecure link (wireless
> for example) and then to be able to use that link with maximum privacy.

  Use EAP-TLS, EAP-TTLS, or EAP-PEAP.

> My users profiles are stored in an LDAP directory.

  Then EAP-TLS is probably not worth it.

>  I would like to use EAP-TLS as it is supported in most OSs to
> exchange data with the user about the establishment of an IPsec
> tunnel (using AH in tunneling mode).

  That's not how wireless works.  It sets up an encryption key used to
encryprt the wireless traffic, but there's no IPSec involved.

> Is that possible ? I believe I read something about LDAP and EAP-TLS
> being incompatible and I couldn't find anything about using EAP-TLS for
> anything but PPP.

  See http://www.freeradius.org/doc/ for some how-to's.

> Would you advise another way of authenticating users and establishing
> the tunnel ?

  TTLS or PEAP.  Free clients exist for both for Windows & Unix.

  Alan DeKok.


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