XP VPN / remote desktop connection issues

R

R M Braglio

Hello all. I've worked on this issue for about 3 days now and have run into
a wall I can't seem to work out.
I'm going to try to be as detailed as possible here. I think I'm close but
have one or two settings wrong.


I'm trying to configure a VPN connection between two WinXP Pro boxes that
each sit behind a Linksys BEFSR41 V2 router using firmware 1.45.7. Both the
host and client LAN connect to the internet via Comcast.net.

Eventually this connection will be used by an owner of our company to access
programs and printers from home. One of the programs is DOS based.

In the XP VPN under TCP/IP properties I have the specify TCP/IP address
selected and a range of IP addresses in the 192.168.1.X outside of the
addresses the Linksys DHCP uses. The XP VPN server is set to use a static
192.168.1.X that is also outside of the addresses Linksys DHCP uses.

On the client side I have obtain IP and DNS automatically as well as use
default gateway selected.

I have both Linksys routers forwarding port 1723 as well as the PPTP
pass-through option set to enable.

I have confirmed via shields up that port 1723 is open on both connections.

I have the ICF turned off on both the host and client. Any time I turn on
the ICF local users on both the host and client LAN loose the ability to
view the host or clients files. I can't have that.

If I attempt to connect to the VPN server via another XP box on the office
LAN it instantly connects.

Right now when I attempt to connect through the internet I get as far as
verifying user name and password. This results in an error 628.

My current theory is that one or more of the following is true:


1. I need to set either the remote or local LAN ip range to something like
192.168.2.X in order to separate the two networks.

2. Both the client and host must have the same workgroup name.

3. I need to have ICF turned on in order for protocol 47 to be relayed to
both the host and client. If this is true, how do I go about keeping file
and print sharing operational?

4. The DHCP on the Linksys is interfering in some way despite the fact that
I'm using static ip on both the client and host.

Thanks for reading this. If I can't get this to work I'm going to try
remote web connection. That seems to require some ports to be open that
Comcast.net keeps closed.
 
S

Sooner Al

Well, I suggest you do *NOT* use ICF at all. Your behind
NAT devices at each end so the ICF will not add any value
and cause problems as you have seen.

Does Comcast block TCP Port 1723 traffic? Its possible
they may if the Terms of Service specifically disallow
running a VPN or other type of server. I would contact
their Tech Support to find out.

I agree with your number one idea below...

You might look at these old threads for additional
clues...

http://groups.google.com/groups?
q=628+group:*.work_remotely&hl=en&lr=&ie=UTF-
8&sa=G&scoring=d

Al
 

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