Round Robin DNS and VPN Servers

by Mitch Tulloch [Published on 16 Jan. 2007 / Last Updated on 16 Jan. 2007]

How to load-balance multiple VPN servers.

If you're using a VPN server to allow employees to remotely connect to your corporate network and you have a lot of remote users, you can improve performance by deploying additional VPN servers. Rather than divide up your employees into different groups who use different VPN servers, just use one DNS name like remote.company_name.com create multiple DNS records that map this name to the IP address of each VPN server. This will leverage the round-robin feature of Windows DNS servers, and the result will be that client VPN connections will automatically be load-balanced between your servers as your DNS server cycles through their IP addresses during successive name resolution queries.

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Mitch Tulloch is President of MTIT Enterprises, an IT content development company based in Winnipeg, Canada. Prior to starting his own company in 1998, Mitch worked as a Microsoft Certified Trainer (MCT) for Productivity Point International. Mitch is a widely recognized expert on Windows administration, networking and security and has written 14 books and over a hundred articles on various topics. He has been repeatedly awarded Most Valuable Professional (MVP) status by Microsoft for his outstanding contributions in supporting users who deploy Microsoft platforms, products and solutions. Mitch is also a professor at Jones International University (JIU) where he teaches graduate-level courses in Information Security Management (ISM) for their Masters of Business Administration (MBA) program. For more information see http://www.mtit.com.

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