Configure Kemp LoadMaster for DirectAccess NLS

In a previous post I outlined how to configure the F5 BIG-IP Local Traffic Manager (LTM) to serve as the Network Location Server (NLS) for a DirectAccess deployment. Many people then asked if it was possible to do the same with the Kemp Technologies LoadMaster load balancing solution. Until now, it was not. However, beginning with release 7.1-28b it is!

After upgrading your Kemp LoadMaster to version 7.1-28b, open the LoadMaster management console, expand Virtual Services, and then click Add New. Specify a Virtual Address, enter 443 for the Port, optionally provide a descriptive Service Name, select TCP for the Protocol, and then click Add this Virtual Service.

Configure Kemp LoadMaster for DirectAccess NLS

Expand SSL Properties and select Enabled for SSL Acceleration. If you have not yet installed the SSL certificate for the NLS, you will be prompted to use a temporary certificate.

Configure Kemp LoadMaster for DirectAccess NLS

Expand Advanced Properties and select 200 OK from the Error Code drop-down list. Optionally you can enter a description for the service in the Error Message box and click Set Message. This will be displayed if someone opens the NLS web site in a web browser.

Configure Kemp LoadMaster for DirectAccess NLS

At the top of the page click Back. If the SSL certificate for the NLS was not previously installed, add it now by clicking Add New.

Configure Kemp LoadMaster for DirectAccess NLS

Click Import Certificate and provide the certificate file as required. Once the certificate is installed successfully, assign the certificate to the NLS virtual service and click Save Changes.

Configure Kemp LoadMaster for DirectAccess NLS

Once complete, update the DNS record for NLS to point to the IP address assigned to the virtual service running on the LoadMaster.

For more information about the Kemp Technologies LoadMaster load balancer and to download a free fully-functional trial, click here. You can also download a completely free and fully-functional version of the Kemp LoadMaster here.

To learn more about the DirectAccess NLS, please refer to the following posts:

DirectAccess Network Location Server Guidance

DirectAccess NLS Deployment Considerations for Large Enterprises

Leave a comment

9 Comments

  1. Maxime Rastello (MVP)

     /  August 24, 2015

    Nice post !
    FYI you can also use NetScaler LB to handle NLS by creating an HTTPS “Responder”. The responder Will include the HTML code to emulate the page.

    Reply
  2. Great post. Thanks for your help. Can you post another how to on ‘directAccess-Multisite’ deployment?

    Reply
  1. DirectAccess Deployment Guide for KEMP LoadMaster Load Balancers | Richard Hicks' DirectAccess Blog
  2. Migrating DirectAccess from NLB to External Load Balancer | Richard Hicks' DirectAccess Blog
  3. DirectAccess NLS Deployment Considerations for Large Enterprises | Richard M. Hicks Consulting, Inc.
  4. DirectAccess Network Location Server Guidance | Richard M. Hicks Consulting, Inc.
  5. KEMP LoadMaster Load Balancer Certificate Format Invalid | Richard M. Hicks Consulting, Inc.

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