A job processing apparatus that communicates with a control apparatus connected to a first network via a second network different from the first network and a first network interface, and communicates with an external apparatus on a third network via a second network interface includes at least one memory that stores a set of instructions, and at least one processor that executes the instructions, the instructions, when executed, causing the job processing apparatus to perform operations including acquiring information regarding the first network from the control apparatus and, based on the acquired information, setting, in a routing table, route information for transmitting data addressed to an external apparatus connected to the first network via the second network and the control apparatus.