I've got a good, working FreeRadius running EAP-TLS on a SuSE 9.2 box. I've had good luck with WPA supplicants for XP SP2 and several vendor PCMCIA card supplicants - all on XP SP2. I've been trying to get an OS X (Tiger) machine up with the same type of setup, but each time I set the 802.1x "TLS" check box, I always get an error stating that there is no valid certificate available on the machine. I've imported both the client and root CA certs into the Mac OS X Keychain (the root CA imported into X509 anchors category and the client cert into 'logins'.) I've generated the Mac client cert in the same way as I do the XP client cert except without the xpextensions ASN.1 options on openSSL. I realize this isn't a FreeRadius question per-se but was hoping that someone else in FR land has done an 802.1x EAP-TLS setup on OS X w/FR and had success. Thank you, Landon