Virtual private networks (VPNs) based on the Internet instead of the traditional leased lines offer organizations of all sizes the promise of a low-cost, secure electronic network. A VPN enables you to send data between two computers across a shared or public internetwork in a manner that emulates the properties of a point-to-point private link.
VPNs can be used any time a user has an Internet connection, but they require you to expose your internal network infrastructure to authentication requests from the Internet.
1. In Server Manager, right-click Roles and then Add Roles.
2. Click Next to begin.
3. Select Network Policy and Access Services and then Click Next.
4. Network Policy and Access Services Windows appear, Click Next.
5. Select the Role Services Routing and Remote Access Services and then Click Next.
6. Click Install option.
7. Click Start, Administrative Tools, then Click Routing and Remote Access.
8. On the Configuration page, select Configure and Enable Routing and Remote Access option.
9. Choose Remote Access option, then Click Next.
10. Select VPN Access option, then Click Next.
11. On the Network Seletion page, select the network you want users to connect to after they dial in, then Click Next.
12. Select Automatically if there is already a DHCP server on the network or otherwise choose A Specified Range Of Addresses and then Click Next.
13. Click New, type an IP address range, and then Click Ok.
14. Click Next
15. Select No, Use Routing And Remote Access To Authenticate Connection Requests. Then, Click Next.
16. Click finish.
17. Server have successfully configured RRAS.