Re: [pptp-devel] "MPPE required but not available"

[James C. <jam...@hp...>]

This has nothing to do with your use of Red Hat Enterprise Linux AS 3,
but rather to do with the configuration of the PPTP server; as it is not
offering to authenticate the client with MS-CHAP V2.

On Tue, Mar 22, 2005 at 07:46:49AM -0800, Douglas Fenton wrote:
> sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xaded5737> <pcomp> <accomp>]
> rcvd [LCP ConfReq id=0x0 <auth chap MS>]

Server proposes initially to authenticate the client with MS-CHAP only.

> sent [LCP ConfNak id=0x0 <auth chap MS-v2>]

Client counter-proposes authentication with MS-CHAP-V2, required for
MPPE.

> rcvd [LCP ConfReq id=0x1 <auth chap MD5>]

Server proposes to authenticate with CHAP MD5.

> sent [LCP ConfNak id=0x1 <auth chap MS-v2>]

Client refuses again.

> [...]
> MPPE required, but MS-CHAP[v2] auth not performed.

Eventually the client gives up.

Perhaps you should try without MPPE.

-- 
James Cameron                         http://quozl.netrek.org/
HP Open Source, Volunteer             http://opensource.hp.com/
PPTP Client Project, Release Engineer http://pptpclient.sourceforge.net/