PPTP VPN question

Bosko Milekic bmilekic at FreeBSD.org
Thu Jul 8 07:11:35 PDT 2004


>Hello All,
>I am running 4.9-RELEASE-p2 with poptop-1.1.4.b4_3 and am having trouble
>forcing MPPE of any strength. Windows cl
>ients will only connect successfully if encryption is not required of the
>connection. I have tried multiple entri
>es in ppp.conf (conflicting, I might add) found both while googling and
>in thesystem-provided sample ppp.conf fil
>e. Can anyone out there share with me a working ppp.conf? Is there
>anything else required to support MPPE?
>Thanks for your help.
>Dennis

 I have had similar 'problems' with setting up a PPPoE tunnel (doing MPPE)
 under FreeBSD 5.x with Windows clients.  Basically, attempting to force
 any particular encryption strength for MPPE resulted in problems with
 establishing the PPPoE tunnel.  Finally, I had to use this wildcard line
 for MPPE:

 set mppe * *

 (in ppp.conf)

 That finally worked, and Windows appears to negotiate 128-bit STATEFUL
 encryption only (which sucks for lossy links); it simply refuses to
 negotiate stateless MPPE, by the way.

-Bosko




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