Network environment notifying method, network environment...

Details Network environment notifying method, network environment... Network environment notifying method, network environment...

2002-09-25

2008-11-25

Jaroenchonwanit, Bunjob (Department: 2151)

Electrical computers and digital processing systems: multicomput

Network-to-computer interfacing

C709S220000, C709S238000

Reexamination Certificate

active

07457884

ABSTRACT:
When a PC establishes a communication via the Internet with another external PC, at least one of investigation methods is executed prior to a commencement of the communication in a system provided by this invention. The methods are an IP address investigation for investigating whether it is global or private; an IP address comparison for comparing an IP address recognized by an external terminal with the IP address which has been allocated to the own terminal; and a port-scanning judgement for judging as to the PC can access the external PC by executing a port-scanning with respect to a port used by the communication application program from the external terminal. By those methods, when there is a possibility that the communication application program cannot be used due to a certain reason of the investigated network environment, this fact is displayed on a screen so as to be notified to the user.

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Masataka Takemaru, Internet Magazine, No. 60, Japan, Impress Co., Jan. 1, 2000, pp. 220-237.

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