Hi, I hope it is the right place to ask questions about EAP-TLS with radius server. I installed freeradius-2.1.6 rpm package on my Fedora 10 system. EAP_PEAP, EAP_TTLS_CHAP, TTLS_MD5, TTLS_MSCHAP, etc. work fine. However, EAP-TLS handshake failed. Here are my steps to implement EAT-TLS with radius server. 1. on server: yum install freeradius 2. on server: cd /etc/raddb 3. on server: edit users and clients.conf (see attachments) 4. on server: radiusd -X 5. I configured the AP which is wired connected to the server using WPA-TKIP 6. copy ca.pem from server to my wireless machine. 6. I tried EAP_PEAP, EAP_TTLS_CHAP, TTLS_MD5, TTLS_MSCHAP on my wireless machine, which all worked fine. 7. on server: cd /etc/raddb/certs 8. on server: make client.pem 9. copy client.pem from server to my wireless machine 10. run wpa_supplicant on my wireless machine: wpa_supplicant -Dwext -iwlan0 -c WPA_EAP_TLS.conf WPA_EAP_TLS.conf as below, ctrl_interface=/var/run/wpa_supplicant ctrl_interface_group=wheel network={ ssid="ASUS-2.4G" scan_ssid=1 key_mgmt=WPA-EAP eap=TLS identity="root" ca_cert="./ca.pem" client_cert="./client.pem" private_key="./client.pem" private_key_passwd="whatever" } 11. EAP-TLS failed, see the attached tls.log for the output of radiusd Could you help me out on this issue? Is there anything I did wrong? Let me know if you need more debugging info. Thanks, jiajia