Re: Remote Desktop through VPN
From: Odell (odell_at_hotmail.com)
Date: 07/21/03
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Date: Sun, 20 Jul 2003 18:44:29 -0400
Mike,
Here is my situation, I will use arbitrary IP addresses.
My cable modem IP address is 22.100.100.50
I am behind a Linksys router, so my internal network's address range is
192.168.1.100 - 192.168.1.255
Computer A: 192.168.1.100
Computer B: 192.168.1.101
Computer C: 192.168.1.102
On Computer A running Windows XP Pro, I have created an Incoming Connection
I have configured the Linksys router to port forward Port 1723 for
192.168.1.100
Now, on my external computer (Laptop X), I set up PPTP VPN connection to
22.100.100.50 and it connects to the connection.
I run IPCONFIG and this is what shows:
Ethernet Adapter Local Area Connection
IP address: 192.168.1.100
Subnet mask: 255.255.255.0
Default Gateway: 192.168.1.1
PPP adapter VPN
IP address: 192.168.1.110
Subnet mask: 255.255.255.255
Default Gateway: 192.168.1.110
I am able to ping Computer A, B, and C. But when I try to start Remote
Desktop using either computer name or IP address (i.e. 192.168.1.102). It
doesn't work.
The reason I am trying to do is because I want to be able to administer my
home network (3 computers which is behind a Linksys router) from say my
friend's house using Remote Desktop. I know you can port forward 3389 for
ONE computer which allows you to access Remote Desktop directly. But I know
you can port forward 3389 for more than internal network IP address because
how will the router whom to forwards the packets to. I figure if I VPN into
the home network first, I will actually be inside the home network and can
run Remote Desktop using their computer names or internal IP addresses.
Is my thought process incorrect or is there a better solution???
Thanks for you help.
Odell
"Miha Pihler" <miha.pihler@Atlantis-N0Spam.si> wrote in message
news:OO%23bCqvTDHA.3640@tk2msftngp13.phx.gbl...
> Hi Odell,
>
> What is IP of your source PC? Is it from 192.168.x.x range? That could be
a
> bit of a problem but there could also be a number of different things...
>
> You could try for a test and change IP of your server with e.g. 10.10.x.x
> and try then. That should eliminate problems with 192.168.x.x range if it
> exists.
>
> First try to ping your ServerA. If it responds then try with Remote
Desktop.
>
> By default WindowsXP operating system does not work as a router (does not
> forward IP packets). So in order to reach ComputerB and ComputerC from
> ComouterA you will need to enable IP Forwarding on your VPN server and
that
> could be a security risk so you have to be sure this is what you need!
> Here is how you do it
> http://support.microsoft.com/default.aspx?scid=kb;en-us;315236
>
> What do you use for your VPN? Do you use PPTP or L2TP? There are also some
> issues with IPSec and NAT that will prohibit you from establishing
> connection with L2TP and IPSec over NAT.
> How do you know your connection is successful? Are there any errors in
your
> Event Logs?
>
> Make SURE your network is secure! Have a good firewall in place! Protect
> unnecessary outbound traffic!
>
> --
> Mike
> MCSA 2K, MCSE 2K, MCT, ...
>
> "Odell" <odell@hotmail.com> wrote in message
> news:egtxpUvTDHA.2244@TK2MSFTNGP11.phx.gbl...
> > Please correct my assumptions if there are wrong..
> >
> > I have 3 computers at home all running Windows XP Pro behind a Linksys
> > router. All 3 computers have fixed IP addresses. I have Computer A
> > (192.168.1.100) to accept incoming connections and run as a VPN server.
> >
> > I am able to connect to the VPN connection but now I can't run Remote
> > Desktop. I was under the assumption that once you VPN, its as if you're
> > physically on the network. I am trying to access Remote Desktop with all
3
> > of my computers through the VPN tunnel but it's not working.
> >
> > For example, I have Computer A, Computer B, Computer C. I want to be
able
> to
> > connect VPN through an outside computer and then run Remote Desktop. And
> not
> > just Remote Desktop on the computer acting as a VPN server, I want to
able
> > to connect via Remote Desktop on Computer B and Computer C also.
> >
> > I'm assuming the reason this is not working is because the outside
> computer
> > doesn't know whether to use the IP address from my Local Area Connection
> > adapter or the IP address from the PPP adapter (VPN connection).
> >
> > Does anybody have a solution for this?
> >
> > Thanks,
> > Odell
> >
> >
>
>
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