Typically, DDNS is used to allow Internet connectivity without having to pay for a static public IP address—often an expensive item from most ISPs (Internet service providers). Less frequently, a static IP address may be an available option, but a more “recognizable name” (vs. an IP address) is preferred, specific to that host.

Niagara-configured DDNS may be used in different scenarios, including “dialup modem” access, or in cases where the host (almost always a QNX-based JACE) is Ethernet-connected, either directly to a cable/DSL modem, or as part of a LAN behind a router (which in turn, is connected to a cable/DSL modem).

Although platform configuration for any NiagaraAX-3.1 host, including Win32-based NiagaraAX hosts (JACE-NXS, Supervisor PC, etc.) also includes a “Ddns Configuration” view, please note that the Windows OS on these hosts is directly configurable for DDNS as well. Testing and usage of Niagara-configured DDNS has concentrated on the QNX-based JACEs (JACE-2, -4, and -5 series platforms).