Re: TCP Error 733

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From: Sooner Al (SoonerAl_at_somewhere.net.invalid)
Date: 01/21/05 

Date: Thu, 20 Jan 2005 19:00:26 -0600

Reply to message from "James Goodman" <jamesATnorton-associates.co.ukREMOVE> (Thu, 20 Jan
2005 11:13:29) about "Re: TCP Error 733":

> Sorted now (kind of) & it is the router. If I configure the incoming VPN to use DHCP to
> assign ip addresses it fails. If I assign addresses from the XP box it works.

> No name resolution though. I can ping via ip addresses, but not via names. Any idea on
> how I can get that to work without installing a DNS server at the remote location?

> --
> Cheers,

> James Goodman
> "Sooner Al" <SoonerAl@somewhere.net. invalid> wrote in message news: e9IqEDx$EHA.
> 600@TK2MSFTNGP09. phx.gbl...
>> 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

Try a hosts file on the client PC that maps the local IP addresses of the PC's at the
remote location.

------
Al Jarvi (MS-MVP Windows Networking)

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