Re: VPN Connectivity

From: wailakig (wailaki_at_batnet.com)
Date: 05/27/04 

Date: 27 May 2004 13:37:48 -0700

SonicWALL has a predefined service for PPTP which includes both
protocol #47 (GRE) and the control port (1723 TCP). However, you are
clearly getting the traffic inbound (The client PCs can come in and
seem to authenticate and DHCP assigns them as IP and we can see them
on the server in RRAS.), so you might be suffering from something
related to fragments.

Enable fragmented packet support on the inbound PPTP rule(s) you
created.

Enable fragments on the WAN Network screen advanced tab.

"David Jones [MSFT]" <dajones@online.microsoft.com> wrote in message news:<##Roav0QEHA.628@TK2MSFTNGP11.phx.gbl>...
> Could you please post an ipconfig /all from a VPN client that shows this
> problem once it is connected?
> Also, you don't need ports 47 or 500 open. You'll need Protocol 47 (called
> GRE or PPTP pass-through usually depending on the firewall, not sure what
> Sonicwall calls it), but not port 47.
>
> David Jones
> SBS Product Team
>
> --
> This posting is provided "AS IS" with no warranties, and confers no rights.
>
>
> "Michael Barker" <mbarkernospam@c-4.com> wrote in message
> news:12f7701c4434a$ee3c8100$a501280a@phx.gbl...
> > I am running a SBS2K3 with one NIC behind a SonicWall TZW
> > Firewall. We are trying to VPN using standard MS PPTP
> > VPN configured on the client setup using the client
> > Networking wizard. We went through the Internet and RRAS
> > wizard setup on the server and we opened ports 1723, 47
> > and 500 on the firewall. The client PCs can come in and
> > seem to authenticate and DHCP assigns them as IP and we
> > can see them on the server in RRAS. BUT the clients can
> > see nothing. When they open up Outlook to connect to
> > Exchange it gives the message in th lower right corner
> > that they are disconnected. When you try and uncheck the
> > disconnect line it gives you a server log on box, but it
> > will not allow you to logon. When you click on a mapped
> > drive that was mapped when the client was connected to
> > the office LAN you get a message that "the local drive
> > name is already in use. Connection cannot be restored."
> > We have tried everything, brought in other "experts" and
> > worked with Dell software support on this and to no
> > avail. OWA and Remote Access all work great - it is just
> > this plain vanilla VPN that is giving us grief. Thanks
> > in advance for any help.

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