DDNS for ISP users

Dynamic DNS providers offer a software client program that automates the discovery and registration of the client system's public IP addresses. The client program is executed on a computer or device in the private network.

It connects to the DDSN provider's systems with a unique login name; the provider uses the name to link the discovered public IP address of the home network with a hostname in the domain name system. Depending on the provider, the hostname is registered within a domain owned by the provider, or within the customer's own domain name. These services can function by a number of mechanisms. Often they use an HTTP service request since even restrictive environments usually allow HTTP service. The provider might use RFC 2136 to update the DNS servers.

Many home networking modem/routers have clients for several DDNS providers built into their firmware. An early example is the 1999 UMAX UGate-3000, which supported the TZO.COM dynamic DNS service.

December 29, 2011

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