To configure as u want plz may try the below : But before doing that, plz collect registry backups and other necessary backups ….
Components of VPN are :
1. Point-to-Point Tunneling Protocol (PPTP): Provides data encryption using Microsoft Point-to-Point Encryption.
2. Layer Two Tunneling Protocol (L2TP): Provides data encryption, authentication, and integrity using IPSec.
To install a VPN on server 2003, follow these steps:
1. Click Start >Administrative Tools, and then click Routing and Remote Access.
2. Click the server icon that matches the local server name in the left pane of the console.
3. Click to select VPN or Dial-up depending on the role that you intend to assign to this server 2003
4. In the VPN Connexion on window, click the network interface which is connected to the Internet, and then
5. click Next. In the IP Address Assignment window, click Automatically if a DHCP server will be used to assign addresses to remote clients, or click From a specified range of addresses if remote clients must only be given an address from a pre-defined pool.
6. Click Next to continue. If u clicked From a specified range of addresses, the Address Range Assignment dialog box opens. Click New. Type the first IP address in the range of addresses that you want to use in the Start IP address box. Type the last IP address in the range in the End IP address box. Windows calculates the number of addresses automatically. Click OK to return to the Address Range Assignment window.
7. Click Next to continue. Accept the default setting of No, use Routing and Remote Access to authenticate connection requests, and then click Next to continue. Click Finish to turn on the Routing and Remote Access service and to configure the server as a Remote Access server.
Now to configure the server as a router :
1. Click Start >Control Panel > Administrative Tools, and then click Routing and Remote Access.
2. Right-click the server name, and then click Properties.
3. Click the General tab, and then click to select Router under Enable this computer
4. Click LAN and demand-dial routing, and then click OK to close the Properties dialog box.
To grant dial-in access to a user account :
1. Click Start > control Panel > Administrative Tools, and then click Active Directory Users and Computers.
2. Right-click the user account, and then click Properties.
3. Click the Dial-in tab.
4. Click Allow access to grant the user permission to dial in. Click OK.
Now configure the 2nd server 2003,
1. On the 2nd 2003 computer, confirm that the connection to the Internet is correctly configured.
2. Click Start > Control Panel > Network Connections
3. Click Create a new connexion under Network Tasks, and then click Next.
4. Click Connect to the network at my workplace to create the dial-up connection. Click Next to continue….
5. Click Virtual Private Network connection, and then click Next.
6. Type a descriptive name for this connexion in the Company name dialog box, and then click Next….
7. Click Do not dial the initial connexion,
a) if the computer is permanently connected to the Internet. If the computer connects to the Internet through an Internet Service Provider (ISP), click Automatically dial this initial connexion,
b)and then click the name of the connexion to the ISP. Click Next. (depends on which kind of connexion)
8. Type the IP address or the host name of the VPN server computer
9. Click Anyone’s use if you want to permit any user who logs on to the workstation to have access to this dial-up connection. Click My use only if you want this connexion to be available only to the currently logged-on user. Click Next.
9. Click Finish to save the connexion
10. Click Start > Control Panel > Network Connection
11. Double-click the new connection.
12. Click Properties to continue to configure options for the connexion.
To continue to configure options for the connection, follow these steps:
a) If u are connexing to a domain, click the Options tab, and then click to select the Include Windows logon domain check box to specify whether to request Windows Server 2003 logon domain information before trying to connect.
b) If u want the connection to be redialed if the line is dropped, click the Options tab > click to select the Redial if line is dropped check box.
To use the connection, follow these steps:
1. Click Start > point to Connect to >click the new connection.
2. If you do not currently have a connection to the Internet, Windows offers to connex to the Internet.
3. When the connexion to the Internet is made, the VPN server prompts u,
for ur user name and password. Type your user name and password, and then click connexion
Your network resources must be available to you in the same way they are when you connexion directly to the network.
Hope this info helps u ! and u can adjust as per ur requirements.