Hi, I have a problem about Cisco PPTP VPN with MPPE Authentication. I use FreeRadius 1.0.4 with MySQL 4.1.10. I want to establish a PPTP VPN authenticated by FreeRadius. The problem is when I use pix525(os6.34), I can establish the PPTP VPN with MPPE 128, MS-CHAP. But when I use cisco7204(12.2-29), I can only establish the PPTP VPN without MPPE, MS-CHAP. When I use cisco7204 local db for authentication, I can establish the PPTP VPN with MPPE 128, MS-CHAP. I use the same configuration on radius server. I think the problem is freeradius. But it is strange. Because FreeRadius support mppe key and the pix test succeed. ----7204 configuration---- interface Virtual-Template1 ip unnumbered FastEthernet1/0 peer default ip address pool test ppp encrypt mppe auto stateful ppp authentication ms-chap chap ----windowsxp vpn client---- MS-CHAP, maximum strength encryption. It displayed the encrytion type is not match. 7204 debug ppp mppe event 5:41:33: Vi1 MS-CHAP: O SUCCESS id 29 len 4 15:41:33: Vi1 MPPE: don't understand all options, NAK 15:41:33: Vi1 MPPE: RADIUS keying material missing Any one can help me?