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Dynamic DNS Keeps Names Up to Date

 
 

Before DDNS was widely available in DHCP and DNS products, many enterprises used proprietary methods to update DNS. These approaches are OK, but often are self-contained and difficult to support and maintain. You'd do better to incorporate DDNS products into your infrastructure.

DDNS Up Close

DDNS includes three advanced DNS features: dynamic update, notify and IXFR (incremental transfer).

Dynamic update is the process by which your DHCP server or other IP address service notifies the DNS server of new information. Using a secure connection, the DNS server is told, for instance, that workstation-bill.accounting.example.com is now at IP address 10.35.99.124. The DNS server remembers this information, discards the old information and begins answering any requests for the name of 10.35.99.124 as workstation-bill.accounting.example.com.

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