GlobalNames Zone

Hello dear readers,
In this  article we will talk about one unique feature available with Windows Server 2008, GlobalNames Zone. This special zone type is deployed within an Active Directory domain and hosts simple, single-label names. This means that in order to access resources within the network, computers use a simple name instead of using the fully qualified domain names (FQDN). In older versions of Windows Server, the use of single-label names was possible by deploying a WINS server. The GlobalNames zone is not configured by default, so you will have to manually create such zone. Remember that the name must be exactly GlobalNames. The server will recognize the zone name and will accept these single-label names.
This feature is important when services such as mail, ftp or www are used within a company. Because these records point to servers that host important services, they usually have static IP addresses configured. Note that GlobalNames zones can be configured only with Windows Server 2008 so this feature is not compatible with previous versions of Windows Server. There sare some steps that you need to take in order to successfully deploy a GlobalNames zone:
  • On every DNS server that will host the zone open an elevated command prompt and enter    dnscmd . /config /enableglobalnamessupport 1. The server must be a Domain Controller running the DNS service:
    enable globalnames support
          This command will enable the GlobalNames zone support on the server. The “.” character specifies that the configuration is made on the current server.
  • Create an Active Directory integrated zone named GlobalNames. The zone must be configured as a forward lookup zone. Set the Active Directory Zone Replication Scope To all DNS servers running on domain controllers in this forest. If you don’t know how to configure such zone, check out our previous article configuring DNS zones. Also don’t forget to set the dynamic update to allow only secure dynamic updates. 
  • All records created here can have single-label names. I will create a CNAME record for my email server and I will name it mail. Now I can ping this newly created record to see if the zone is working correctly.
Records hosted in this zone are recognized by all DNS clients so no further configurations are needed. Problems can occur when a client tries to register a record that already exists in the GlobalNames zone.
That’s about it for this article folks, please leave a comment and share your thoughts about this one. Wish you all the best and have a great day!

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