Hi,Jouni, I have tested hostap 802.1x EAP-TLS, and it worked very well. WINXP supplicant<====> hostap(linux box) <===> win2kserver (with IAS support) However, I also tried 802.1x EAP-MD5. However, RADIUS server sended reject message. Have you tested EAP-MD5 ? Thanks in advance hualab