VPN problem

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From: Roger (rajivshah_at_sbcglobal.net)
Date: 09/30/04 

Date: Thu, 30 Sep 2004 18:31:05 GMT

Hi,
I am trying to set up a VPN to connect to an office computer from a home
computer. The configuration is as follows:

Home Network: Consists of a desktop and a laptop, both running XP Home,
cable broadband access and a wireless router. The laptop has a wireless
connection. The workgroup name is "Workgroup". The router's firewall is
disabled.

Office Network: Consists of 4 desktops - 2 running ME, 1 XP home and 1 XP
Professional, DSL broadband access and all computers connected via wired
ethernet. The DSL modem cum access point is connected to a ethernet switch
as are all the computers. The workgroup name is again "Workgroup". The
firewall of the DSL modem cum access point is set to allow PPTP connections
to the computer with XP Professional.

I set up a "Incoming Connection" on the office computer with XP Professional
(say Computer B-the computer name is "Roger") and an outgoing VPN connection
from the home laptop (say Computer A-the computer name is "Sam") to Computer
B using the Internet IP address (not the IP address of computer B assigned
via DHCP) of the Office modem cum access point.

Case 1: With NIS 2004 disabled on computer B, the connection is successful,
but I cannot access resources on the office network from computer A. I
cannot even access the shareddocs folder on computer B. Only my home network
computers show up in windows explorer on computer A. Note that the second
computer (the desktop) in my home network also has the name "Roger". In
TCP/IP properties of the incoming connection item on computer B, the "Allow
callers to access my LAN" is checked and "Assign TCP/IP addresses
automatically using DHCP" is selected.

Case 2: With NIS 2004 enabled on computer B, the connection fails and I get
error #800.

I will appreciate any help resolving the above problems. Note that Remote
Desktop connections and TCP/IP connection via PC Anywhere work fine even
with NIS 2004 enabled everywhere.

Thanks.
Roger

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