Best Practice: DNS Settings On Domain Controllers

less than 1 minute read

Description:

Quick post on the current best practice for Domain Controllers.

To Resolve:

  1. First, never ever just have one DC. If you have to, install a second one on a workstation – no reason to ever have only one.

  2. Example setup with 3 Domain Controllers (example: DC1 holds all FSMO roles):

    • DC1 Settings:
      • Primary DNS => DC2
      • Secondary DNS => DC3
      • Tertiary DNS => 127.0.0.1
    • DC2 Settings:
      • Primary DNS => DC1
      • Secondary DNS => DC3
      • Tertiary DNS => 127.0.0.1
    • DC3 Settings:
      • Primary DNS => DC1
      • Secondary DNS => DC2
      • Tertiary DNS => 127.0.0.1

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