RDP over VPN between two XP Pro machines

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From: Kris (kvdv_at_easynet.be)
Date: 04/24/04 

Date: Sat, 24 Apr 2004 15:25:49 +0200

Hi,
Like many others I'm trying to setup a WinXP machine to be a vpn server and
a rdp server, so at work i can connect to my home pc, open a vpn tunnel and
then open a rdp session.

I have a few questions about this. Hopefully someone can help me out.

Both at work and at home I have a WinXP Pro machine. At work all ports are
open and at home, I'm behind a router on which I can do port forwarding. I'd
like to use my home pc when I'm at work.

The VPN server (the home pc) is behind a router so Port Mapping will need to
be done on the router I guess. Standard port usage is 1723 for PPTP and
IPSec is 500 I think. I also heard something about PPTP passthrough but I
don't know whether this is relevant?

The things I don't fully understand:

- how/where can I determine whether my VPN server should use PPTP
or Ipsec ?

- if I would use PPTP, why might I need to configure "PPTP
passthrough" ? And how?

- Currently the RDP service on my home pc is accepting RDP requests from
remote clients. But because this would be more secure over VPN I've added
the XP VPN service ("incoming connections"). My question : how can I make
sure that RDP will only work AFTER the tunnel has been created?

- Any other (security) issues I need to consider?

Thanks!

Rgds,
Kris

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