Understand more on Microsoft DNS Server (Part II)

Dynamic Update Setting

DNS client can register and dynamically update their resource records to a DNS server. By Default, DNS clients that are configured with static IP addresses attempt to update host (A or AAAA) and pointer (PTR) records and DNS clients that are DHCP clients attempt to update only host records. In workgroup environment, the DHCP server updates the pointer record on behalf of the DHCP client whenever the IP configuration is renewed.

In order for dynamic DNS updates to succeed, the zone in which the client attempts to register or update a record must be configured to accept dynamic updates. 2 types of dynamic updates can be allowed:

Secure updates – Allow registrations only from AD domain member computers and updates only from the same computer that originally performed the registration

Nonsecure updates – Allow updates from any computer (include workgroup)

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