forcing client certificate authentication during EAP-PEAP and EAP-TTLS

4 Aug 2005

      Hi,

I was wondering if there is a way to configure the radiusd to force
the client to present his certificate during EAP-PEAP and EAP-TTLS.
(I know this is not necessary, but I need to do it anyways....)

I saw an interesting piece of code in eaptls_initiate() which
indicates someone was thinking about it:

       /*
        *      If we're TTLS or PEAP, then do NOT require a client
        *      certificate.
        *
        *      FIXME: This should be more configurable.
        */
       if (handler->eap_type != PW_EAP_TLS) {
               vp = pairfind(handler->request->config_items,
                             PW_EAP_TLS_REQUIRE_CLIENT_CERT);
               if (!vp) {
                       client_cert = FALSE;
               } else {
                       client_cert = vp->lvalue;
               }
       }

So it seems like radiusd will force client certificate authentication
during PEAP or TTLS if this particular value pair is set with
lvalue==1.  But I don't see any code where the
PW_EAP_TLS_REQUIRE_CLIENT_CERT gets put into the config_items.

Can someone "in the know" comment?

I am looking at the source code from freeradius-1.0.4

Thanks,
Michael

forcing client certificate authentication during EAP-PEAP and EAP-TTLS

Michael Wang