Configuring RADIUS Authentication for L2TP

Modifying the RRAS Network Policy

• After installing and configuring RRAS, the NPS system will deny access by default to the RRAS server for clients, unless the network policy generated is modified. 

• The network policy, which is labeled Connections to Microsoft Routing and Remote Access server, can be found under the Network Policies node of the Network Policy Server.

• The policy must be set to Grant Access in the Access Permission section of the dialog box, as shown in Figure 5. This dialog box can be invoked by right-clicking the policy and choosing Properties. After enabling, the NPS system will allow client connections.

 Modifying the RRAS network policy on the NPS server.

Configure Network Policy:

It is import to apply the network policies to control the access. In this demo I will explain how to make custom network policy on the NPS.

1.    To open NPS mmc go to start > administrative tools > Network policy server

2.    In the mmc expand the “Policies”, click on “Network Policies” and then click Connection Microsoft Routing and Remote Access Server.

3.    Check Gract Access and then change Type of network access server "Rmote Access Server"

4.   On the specify condition page, click add on the select condition dialog box, scroll down and double click on tunnel type.

5.    In tunnel type dialog box type L2TP click ok .