Curtis,
  I didn't see your post till after I posted mine.  I am having a very
similar problem, but NOT in Vista, but with XP.  See my post from 3/28 and
let me know if you found a solution.  I'd like to try it, because I too am
suspicious a M$ patch caused it.
Many Thanks,
Ben

On Thu, Mar 20, 2008 at 10:53 AM, Curtis Maurand <[EMAIL PROTECTED]>
wrote:

> Hi,
>
> I'm having a bit of trouble with Windows Vista pptp clients connecting to
> anything on the internal network (file shares, exchange server, etc) after
> connecting via pptp from outside.  The rules are set up to permit the
> traffic.  Windows XP clients work fine.  The Vista machines can ping things,
> but can't actually make connections.  Is there some sort of firewall thing
> that I'm missing on the vista machines?  Could it be a MTU size thing?
>
> If they're using the Greenbow IPSEC client.  Things work fine, but some
> places don't do IPSEC passthrough, but will allow PPTP to pass through.
>
> Thanks,
> Curtis
>
> --
> Curtis Maurand
> Head Honcho
> Xyonet Webhosting Services
> 6 Evergreen Lane
> Biddeford, ME 04005
> http://www.xyonet.com
> mailto:[EMAIL PROTECTED]
> 207.252.7748
>

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