Re: TCP Error 733

From: Sooner Al (SoonerAl_at_somewhere.net.invalid)
Date: 01/20/05 

Date: Thu, 20 Jan 2005 10:54:57 -0600

PPTP VPN also requires that GRE Protocol 47 traffic be enabled through the router. The Windows
Firewall automagically does that when TCP Port 1723 is opened.

Some manufacturers call that "PPTP Pass Through" or "VPN Pass Through" or something similar. Check
with the technical support web pages for your router or users manual for possible help. Note that
this can also be a firmware issue on the router. In my experience, with a Linksys BEFSR41 (works
with certain firmware versions) and a Buffalo WBR-G54 (never works with any firmware version), some
firmware revisions work while some do not... Its kind of a crap shoot with these consumer grade
devices...

You might also look at this page for a test procedure that may tell you something...Look at the "VPN
Traffic" section...

http://www.microsoft.com/technet/community/columns/cableguy/default.mspx#EBAA 

-- 
    Al Jarvi (MS-MVP Windows Networking)
Please post *ALL* questions and replies to the news group for the mutual benefit of all of us...
The MS-MVP Program - http://mvp.support.microsoft.com
This posting is provided "AS IS" with no warranties, and confers no rights...
"James Goodman" <jamesATnorton-associates.co.ukREMOVE> wrote in message 
news:O$cDSHw$EHA.2876@TK2MSFTNGP12.phx.gbl...
>I have a somewhat mystifying problem trying to establish a VPN connection between two WinXP 
>machines.
>
> Both machines are running SP2 & are behind routers.
> The router (NetGear DG834G) infront of the Incoming PC is set to forward TCP Port 1723 to the XP 
> machine.
>
> I setup the connection with both machines on the same LAN. I could establish the VPN without 
> error.
>
> I then moved the incoming machine to its remote location.
>
> I changed only the host name for my outgoing VPN connection.
>
> When I attempt to connect it succeeds, but at the 'registering your computer' stage it fails 
> quoting error 733.
>
> I have tried the following steps, but the error remains:
> Disabling the XP firewalls on both machines.
> Forwarding all ports through the router to the XP machine (both with & without the firewall 
> enabled).
> Manually specifying the ip address (from my outgoing connection).
>
> I have a suspicion the netgear router is somehow interfering with the connection, but I am unsure 
> how.
>
> Any further suggestions?
>
>
> -- 
> Cheers,
>
> James Goodman
>

Relevant Pages

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