PPTP VPN with MPPE problem
g.torrisi at unict.it
Sun Aug 14 16:18:59 CEST 2005
you must be sure that IOS running on 7204 support encryption.
on interface virtual-template you use for auth add: ppp encrypt xxx
where xxx can be auto, 40 or 128
> 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?
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