make sure the ports are open. quoted from
http://www.ChicagoTech.net
Interface(s) for VPN server. If your network doesn't have a router or the
VPN is also a gateway, your computer must have at least two interfaces, one
connecting to the Internet and another connecting to the LAN. If it is
behind a router, you just need one NIC.
Which ports need to be opened for running VPN
A: PPTP VPN uses TCP Port 1723, IP Protocol 47 (GRE); L2TP: UDP Port 1701;
IPSec: Pass IP protocol 50 and 51. Note: 47 is a protocol number and not
TCP port. The protocol name is GRE. It'll make a big difference when
configuring your firewall or router.
--
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.
"bios_752002" <(E-Mail Removed)> wrote in message
news:09E42654-D667-4DD3-9C67-(E-Mail Removed)...
> the senario is - want to set up a VPN connection between winXP machine(
> home comp) and win2003-sbs ( office server)
>
> the xp pc is connected to internet using a d-link 4 port ADSL router/modem
> .
>
> the 2003 server is connected to the internet using a billion 711ce ADSL
> router/modem.
>
> have planned on setting up a simple VPN dialup connection from winxp
> computer - and using the Routing and remote Access services on the 2003
> server to handle the vpn connection.
>
> Both adsl router/modems claim to allow vpn passthrough for vpn
> connections.
>
> have noticed the 2003server requires at least two network cards (
> interfaces) for configuration of routing and remotes access using vpn.
>
> ( from the office end- the 2003 server has one network card and is
> connected to a switch,which is then connected to the billion router)
>
> *configuring this connection as i have described above - is there any
> special configuration i have to do at each router/modem?????
>
> will the vpn connection work using the proposed method i have described.
>
> please post specific help- not just general concepts - i need precise
> steps to take .
>
> Thanks to all that reply!!!!! :-)
>