[pptp-server] MPPE Encryption Not Working...

[ionut at efone.com.au]

Hi,

I had the same problem with pptp. When encryption was disabled (on the W98
client machine), everything was working OK. If I tried to enable it, no IP
traffic would
pass through the link, although is seemed to be connected.
I fixed the problem by downloading a patch from Microsoft, called 'vpnupd'. I
don't remember exactly where it is located on the site; try searching for it.

Ionut

Jake Woolstenhulme wrote:

> Sorry,  I hit send a little prematurely there.  Here is my current setup:
>
> linux-2.2.16
> ppp-2.3.11
>     w/ ppp-2.3.11-openssl-0.9.5-mppe.patch
> pptpd-1.0.0
>
> All set up as per Vanja Hrustic's 2.2.16 + mppe patch + ppp-2.3.11 HOWTO
> (working one this time)
>
> TIA
> -Jake Woolstenhulme
>
> Jake Woolstenhulme wrote:
>
> > Hi All,
> >
> > I have been trying to get a Win98 machine to connect up to my RedHat 6.2
> > machine running PoPToP.  I am able to authenticate and remain connected,
> > but no data will pass through the connection.  I can ping the PPP
> > interface on the Win98 box, but no further.  When I try to ping the
> > Linux box, I see the lights on the DUN systray icon blinking as if
> > traffic was both being sent and received, but the ping times out.  From
> > the Linux box, I can see the counters on the PPP interface increasing,
> > but cannot ping the Win98 box.  The log files show that the connection
> > is established using 40-bit stateless encryption.  The only errors are
> > from pppd complaining about unsupported protocols.  Sorry I don't have
> > the actual logs available right now.
> >
> > The really strange thing is if I unload the PPP_MPPE module from the
> > Linux box, and uncheck require encryption options from the Win98 side,
> > everything works as it should.
> >
> > Any ideas?
> >
> > TIA
> >
> > -Jake Woolstenhulme
> >
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