I loaded the computer certificate via the MMC Certificates module, into the Local Machine, Personal store. When there isn't one in there I get a can't find a certificate error in widows when trying to connect and it never tries to do EAP. Also, looking at the user log and the computer log, they both get the "TLS_accept:error in SSLv3 read client certificate A" at that stage. Looking at User cert request ID #52 and Computer cert request ID #40 (Where the "SSLv3 read client certificate A" error occurs) they are pretty much identical. The next messages in the sequence (#53/#41) are also almost identical (the freeradius reply is identical right down to the EAP-Message blobs in the response). The message after that is where things appear to go wrong, in User #54, a ton of EAP data comes in from the client, the client cert details show up, and authentication seems to be wrapping up; but in Computer #42 barely anything appears in the EAP blobs and the process appears to start cycling over again. Thanks -- Mike Olson tnt@kalik.co.yu wrote:
machine: TLS_accept:error in SSLv3 read client certificate A user: (other): SSL negotiation finished successfully
There doesn't seem to be a machine certificate in the certificate store.
Ivan Kalik Kalik Informatika ISP
Dana 18/1/2008, "Michael Olson" <olson@irinim.net> piše:
I'm attempting to use FreeRADIUS to do EAP-TLS with Windows XP using machine authentication. I set up FreeRADIUS following the guide at http://wiki.freeradius.org/WPA_HOWTO#Step_2:_Configure_FreeRADIUS and I'm using OpenSSL to generate the cetificates.
I can authenticate using user certificates fine, so I'm pretty sure all the Certificates & CA setup is right on the RADIUS server certificate, User certificate, and the Root Certificate. That leaves the Computer Certificate.
I generated the computer certificate to have the common name be the machine name (I've tried it plain and FQDN) and I've put the FQDN is the altSubjectName field as well. It has the same usage extensions as the User certificates. (TLS Client Auth: 1.3.6.1.5.5.7.3.2) I set the AuthMode registry key to Computer Only (2), and it trys to authenticate which suggests that the workstation is okay with the certificate.
Computer Certificate details: http://www.cs.odu.edu/~olson/eap/computer.crt.txt
Other than that I can't think of where to look for a problem. Comparing logs between user and computer authentication I can see where it starts differing but I can't find anything I can interpret as to why. Nothing seems to fail for the computer, it just cycles endlessly.
Successful User Authentication Log: http://www.cs.odu.edu/~olson/eap/eap-tls_user_auth.log
Failed Computer Authentication Log: http://www.cs.odu.edu/~olson/eap/eap-tls_computer_auth.log
I also tossed out the windows tracing logs for both user and computer auth and anything else that seemed useful in http://www.cs.odu.edu/~olson/eap/
Can anybody give me a pointer on where to look for problems?
Thanks
-- Mike Olson
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