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I have ADSL internet connection for LAN in my company and I use Speedtouch 516 ADSL modem for it. I created Windows XP based VPN server on one of my computers.
I have open 1723 port on router and mapped it to server internal IP adress to forward trafic to it.
At home I use Speedtouch 516 ADSL modem fro internet connection, too.
The problem is:
When I try to establish VPN connection from my home, connection establishes with no problems, but I can't see the server.
But when I establish dial-up internet connection from my home, VPN connection establishes too, and I can see and access to VPN server.

Is anyone experience with this problem? Is something wrong with configuration of my ADSL router at home?

Please help! It's very important to me.