i configure vpn server on windows 2003 server.
and client on windows 7.
the client can access shared file of my local network. but the speed is very slow,
when the client access shared folder and copy some thing into that, the the coping is very slow.
Depending on the type of VPN connection you have configured and which client you are using the cause and thus the solution for your problem can vary. If you are using Windows 7 as your VPN client you might want to try disabling the Use Default Gateway option so that you use your internet connection as opposed to the VPN internet connection to tunnel traffic.
To disable this feature you would go into the properties of your VPN connection and select the Networking tab. From there you would highlight Internet Protocol Version 4 (TCP/IPv4) and click the “Properties” button. Next, select the “Advanced” button. The first checkable box says “Use default gateway on remote network”. You will want to ensure this box is unchecked.