fusion_place operates on a mechanism where client programs and web-based server programs communicate and execute processes. Even when used standalone, both the client and server reside and operate on a single computer.

To communicate with the server program, the client program needs to specify the server machine’s "port number." A port is a server-side gateway that accepts requests from clients, with each "port" assigned a "port number." Ports are virtual entities provided by the operating system and do not correspond to physical devices or terminals.

Server programs wait for requests from clients at specific ports (gateways). Generally, it is possible to run multiple server programs on a single computer (for example, a database server and a mail server). Therefore, ports are assigned to individual server programs as a means for clients to specify the destination server program.

fusion_place uses the following two ports (therefore, two port numbers are needed):

The port numbers that server programs wait on can often be specified by the user (system administrator). In fusion_place, you can specify port numbers at the time of installation. The installer’s initial suggestion values are as follows:

Although unlikely, the above ports may already be used for other purposes on your computer. In that case, you need to specify a different port number.