VPN, local network and peer-to-peer

[Laurent]

I've setup a VPN for my wife between her computer at work and our home
network. Home network has three computers, all with WinXP Pro, and one
sharing ICS to the other ("server" in peer-to-peer). Work computer is also
WinXP Pro, with DynDNS Dynamic IP. VPN works but I would like to improve.
The problem is as this:

1) when she connects from the computer having ICS, all others users on the
home network are cut off from Internet access.

2) when she connects from another computer on the home network (laptop),
Internet is accessible by others, but then she can't see local network.

It's either one problem or another.

Is it possible with only WinXP Pro installations to have the best of all
world at the same time ? More specifically that :

a) when she connects to VPN from the server computer, Internet is still
shared to others

and

b) when she connects to VPN from client computer on the home network, she
can access also local LAN at the same time


Technical stuff
---------------
Work computer:
- WinXP Pro
- Dynamic adress by DynDNS in the form of: blabla.homeip.net

Home computer ("server")
- WinXP Pro
- NIC LAN: 192.168.0.1
- NIC ASDL: automatic
- VPN - destination IP: blabla.homeip.net
- IP properties: automatic
- Don't use gateway
- DNS: 192.168.0.1 + DNS suffix blabla.homeip.net

Client computer (laptop)
(same as above except only on NIC with following parameters:

- IP: automatic
- Alternate IP: 192.160.0.201 / 255.255.255.0
Gateway 192.168.0.1
Prefered DNS 192.168.0.1


Domain name is the same on all computers

 

[Robert L [MS-MVP]]

quoted from http://www.ChicagoTech.net
Can't access the Internet while using VPN

Symptom: after establishing a VPN connection, you may not be able to access
the Internet because the VPN takes over your existing connection and all
traffic to use the VPN default gateway on the remote network. The remote
network may not allow VPN clients to access the Internet via their gateway.

Resolutions:
1) If you don't need to access the entire VPN resources, disable the "use
default gateway on remote network" option in the properties of the VPN
connection. To do that, go to VPN
Connection->Properties->Network->TCP/IP->Properties->Advanced-, uncheck
"Use default gateway on Remote Network".
2) Edit route table manually if you know how to or check routing page on
this web site.
--
For more and other information, go to http://www.ChicagoTech.net


Don't send e-mail or reply to me except you need consulting services.
Posting on MS newsgroup will benefit all readers and you may get more help.

Robert Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN, Anti-Virus, Tips & Troubleshooting on
http://www.ChicagoTech.net
This posting is provided "AS IS" with no warranties.

 

[Laurent]

2) Edit route table manually if you know how to or check routing page

on this web site.

Ok. It shows the direction were I must go. I know *nothing* about routing,
so I guess I have to spend some time learning the basics before being able
to solve the issue, but that's a start.

Thanks