Image forming system using network, image control apparatus, control methods therefor, and storage media storing control programs therefor

An image control apparatus comprising:

• a first communication member configured to be connected to an external apparatus through a network;
• a second communication member configured to be connected to an image forming apparatus through a predetermined transfer path;
• and
• a port controller configured to control switching of a predetermined network port of the first communication member,
• wherein the port controller:
• closes the predetermined network port in a state where the first communication member and a third communication member, which is provided in the image forming apparatus and configured to be connected to the external apparatus through the network, are connected to a same network;
• and
• opens the predetermined network port in a state where the first and third communication members are respectively connected to different networks.

A control method for an image forming system including an image control apparatus that includes first and second connectors and an image forming apparatus that includes third and fourth connectors, the control method comprising:

• connecting the image control apparatus to an external apparatus through a network using the first connector;
• connecting the image control apparatus to the image forming apparatus through a predetermined transfer path using the second connector;
• connecting the image forming apparatus to the external apparatus through the network using the third connector;
• connecting the image forming apparatus to the image control apparatus through the predetermined transfer path using the fourth connector;
• closing a predetermined network port of the first connector in a state where the first and third connectors are connected to a same network;
• and
• opening the predetermined network port in a state where the first and third connectors are respectively connected to different networks.

A control method for an image control apparatus that includes first and second connectors, the control method comprising:

• connecting the image control apparatus to an external apparatus through a network using the first connector;
• connecting the image control apparatus to an image forming apparatus through a predetermined transfer path using the second connector;
• closing a predetermined network port of the first connector in a state where the first connector and a third connector, which is provided in the image forming apparatus to be connected to the external apparatus through the network, are connected to a same network;
• and
• opening the predetermined network port in a state where the first and third connectors are respectively connected to different networks.

An image forming system comprising:

• an image forming apparatus;
• and
• an image control apparatus comprising:
• a first communication member configured to be connected to an external apparatus through a network;
• a second communication member configured to be connected to the image forming apparatus through a predetermined transfer path;
• and
• a port controller configured to control switching of a predetermined network port of the first communication member;
• and
• wherein the image forming apparatus comprises:
• a third communication member configured to be connected to the external apparatus through the network;
• and
• a fourth communication member configured to be connected to the image control apparatus through the predetermined transfer path,
• wherein the port controller opens the predetermined network port in a state where the first and third communication members are respectively connected to different networks.