configure VPN server

1-Go to Start / Control Panel / Network Connections

2-Start the New Connection Wizard

3-Select Set up advanced connection

4-Click on Accept incoming connections

5- At the LPT1 page, skip it and just click on the Next button.

6-Click on Allow virtual private connection

7-Add user accounts that you want to be able to connect to your WindowsXP computer.

8-Highlight Internet Protocol (TCP/IP) and click on Properties

9-Determine how you want the remote computers to get their IP address

10-The above example will assign IP addresses to each client. Make sure the IP scheme is the same as on your server

11-VPN server is behind a router, Port Mapping will need to be done on the router. Standard port usage is 1723 for PPTP.  You might also need to configure your router for PPTP Passthrough. Port usage for IPSec is 500, 50-51. These ports will have to be forwarded to the VPN server's IP

VPN Server Configuration

1-    Go to Control Panel / Administrative Tools / Routing and Remote Access

2-    Right click on the computer name

3-    Right click on the computer name. In the example it is W3K

4-    Select Configure and Enable Routing and Remote Access

5-    If you have only one network card, select Custom configuration

6-    Click on VPN access, Next, and Finish

7-    When prompted to start the service, click on Yes

Changing the Number of Available Ports

1-    The default setting is to create 128 VPN and 128 L2TP ports. To change the number, Right click Ports and select Properties

2-    Double click on the protocol you want to change and set the Maximum ports to whatever you need. Then click OK, Apply, Ok

Assigning the IP Address Range for the Clients

1-    Right click on Server name

2-    Select Properties

3-    Click on the IP tab

4-    Check Static address pool

5-    Click on the Add button

6-    Enter in the starting IP address that will be assigned to the clients

7-    This should be with the same IP scheme as your local network

8-    In the Number of address:, enter in the same number of VPN connections created earlier. The ending IP address will be filled in automatically

9-    Click Ok, Apply, OK

User Access

1-    You next need to make sure each user account has VPN access

2-    Go to their account setting

3-    Select Properties

4-    Click on the Dial-in tab

5-    Check Allow access

6-    If the VPN server is behind a router, Port Mapping will need to be done on the router.

7-    Standard port usage is 1723 for PPTP. You might also need to configure your router for PPTP Passthrough. Port usage for IPSec is 500, 50-51. These ports will have to be forwarded to the VPN server's local IP address.

If you found solution then you can follow me and send me your Suggestion on Satishrana93@gmail.com.