In this scenario (Figure 4), the JACE is Ethernet-connected to a LAN served by a router to the Internet. The JACE operates on the LAN using a static but “private” IP address, such as in the IP address range 192.168.x.x. or 10.10.x.x. The local router operates on both this “private LAN,” and is also assigned a WAN (public) IP address through the cable or DSL ISP that provides Internet connectivity.

Through its Niagara DDNS configuration (as mode “Intranet”), the JACE sends the IP address currently assigned to the router to the DDNS provider (TZO), where it is registered for dynamic DNS. The JACE remains reachable at its DDNS “domain name” through any Internet connection, for example, “myjace.tzo.com.”

In this scenario, the router may be configured for “port forwarding” for specific software ports used by the JACE, which may include ports such as 3011, 1911, 443, 80, and so on.