On Thu, May 09, 2002 at 03:51:09PM -0700, Archie Cobbs wrote:
> 
> So that's screwey if you're doing MPPE encryption because which
> authentication do you use to generate the MPPE keys?? Apparently
> we are using the wrong one. In any case, we can't use the first
> one because we'd need the yes/no response to generate MPPE keys
> from CHAP MSOFTv2 authentication.

Let me see if I understand: a key used in CHAP authentication is also
used for MPPE.  However, I authenticate twice, once using CHAP MSOFTv2
and once using CHAP MSOFTv2 -- and you think mpd is choosing the MPPE
key from the wrong one of these two authentications?

Is there a way to fix this in mpd?  According to the manual you *have*
to use CHAP MSOFTv2 to use MPPE, so I'd think it'd be okay to
categorically ignore -- for MPPE purposes -- any key obtained through
a CHAP MSOFTv1 authentication.

Can I force mpd to speak *only* CHAP MSOFTv2?  I don't find any such
option in the manual, unfortunately.

> And why is it authenticating you twice in the first place?

I don't know.  Any suggestions on how I can perturb this behavior?
I couldn't find any likely candidates in the manual.

I could also go ask the guys who run the VPN server, but I'm unlikely
to get a useful response, since It Works With Windows.

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