ppp server windows XP Pro

[Nikos Haliassos]

Hi, everybody

I have a XP Pro machine(server) connected to internet through ADSL
modem. XP machine has ip 10.0.0.2 on this interface and modem
(10.0.0.138) acts as a gateway/NAT to internet.
I also have a laptop (XP Pro) connected to the XP box through
different NIC and addresses 192.168.0.1 (Server) - 192.168.0.2
(laptop). The laptop is accessing internet through ICS.

I have setup the ppp server on the "server" machine since i need to
dialin with the laptop when i am away. Infact the connection is
negotiated ok and server-laptop get 192.168.x.x addresses on
255.255.255.255 mask and i am able to access folders and files on
server. Also laptop has "checked the use default gateway on remote
system".

Could you please help me access internet as well? I am able to ping
modem (10.0.0.138) from laptop when i establish the ppp connection.

In this scenario what should the gateway of the ppp connection be to
correctly forward packets to laptop? My XP (server) routing table
showes that the ppp interface (for example 192.168.0.3 subnet
255.255.255.255) has as gateway 127.0.0.1. Is this correct?

THank you for your help
Nik

 

[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.
3) For the security reason, some firewall/routers like Cisco PIX do not
allow access the Internet after establishing the VPN and you cannot modify
the routing table. You may setup split-tunnel.


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