Communication system, communication device and program
A communication system and communication device technology, applied in the field of communication systems, can solve problems such as the influence of the original purpose, and achieve the effect of preventing anxiety
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[0050] Hereinafter, illustrative embodiments according to the present invention will be described with reference to the drawings.
[0051] figure 1 is a block diagram of a communication system 100 according to an embodiment of the present invention. Communication system 100 comprises multifunction peripheral (MFP) (10, 10, ...), and function server 20, multifunction peripheral (MFP) (10, 10, ...) and function server 20 pass wide area network (in this embodiment, be The Internet 1) is connected to each other for data communication.
[0052] In the communication system 100 , MFPs ( 10 , 10 , . . . ) are connected to the Internet 1 through respective broadband routers 2 . Since the MFPs ( 10 , 10 , . . . ) have the same functions, one of them is frequently selected for explaining the functions of the MFP 10 .
[0053] In the normal setting mode (ie, default setting mode), all ports of each router 2 are closed. If a request is transmitted from the internal network to the exter...
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