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Step 2: Configure the RADIUS Server

Updated: August 15, 2012

Applies To: Windows Server 2012, Windows Server 2012 R2



Before you configure the Remote Access server to support DirectAccess with OTP support, you configure the RADIUS server.

 

Task Description

2.1 Configure the RADIUS software distribution tokens

On the RADIUS server configure software distribution tokens.

2.2 Configure the RADIUS security information

On the RADIUS server configure the ports and shared secret to be used.

2.3 Adding user account for OTP probing

On the RADIUS server create a new user account for OTP probing.

2.4 Synchronize with Active Directory

On the RADIUS server create user accounts synchronized with Active Directory accounts.

2.5 Configure the RADIUS authentication agent

Configure the Remote Access server as a RADIUS authentication agent.

The RADIUS server must be configured with the necessary license and software and/or hardware distribution tokens to be used by DirectAccess with OTP. This process will be specific to each RADIUS vendor implementation.

The RADIUS server uses UDP ports for communication purposes, and each RADIUS vendor has its own default UDP ports for incoming and outgoing communication. For the RADIUS server to work with the Remote Access server, make sure that all firewalls in the environment are configured to allow UDP traffic between the DirectAccess and OTP servers over the required ports as needed.

The RADIUS server uses a shared secret for authentication purposes. Configure the RADIUS server with a strong password for the shared secret, and note that this will be used when configuring the DirectAccess server’s client computer configuration for use with DirectAccess with OTP.

On the RADIUS server create a new user account called DAProbeUser and give it the password DAProbePass.

The RADIUS server must have user accounts that correspond to the users in Active Directory that will be using DirectAccess with OTP.

  1. Record the user information from Active Directory for all DirectAccess with OTP users.

  2. Use the vendor specific procedure to create identical user domain\username accounts in the RADIUS server that were recorded.

The Remote Access server must be configured as a RADIUS authentication agent for the DirectAccess with OTP implementation. Follow the RADIUS vendor instructions to configure the Remote Access server as a RADIUS authentication agent.

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