COMMUNICATING APPARATUS FOR PERFORMING COMMUNICATION OVER IP NETWORK BY USING SIP, CONTROLLING METHOD THEREFOR, AND PROGRAM
First Claim
1. A communicating apparatus comprising:
- a communicating unit configured to perform communication that uses a SIP server on a network;
a detecting unit configured to detect unauthorized communication from the communication performed by said communicating unit;
a changing unit configured to change a port number of a receiving port of said communicating unit when said detecting unit detects the unauthorized communication;
a determining unit configured to determine whether or not the unauthorized communication detected by said detecting unit has passed through the SIP server; and
a controlling unit configured to control the device to request the SIP server to delete the port number of the receiving port that has not been changed yet by said changing unit if said determining unit determines that the unauthorized communication has passed through the SIP server and to re-register on the SIP server a port number of a receiving port that has been changed by said changing unit if said determining unit determines that the unauthorized communication has bypassed the SIP server.
1 Assignment
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Accused Products
Abstract
A communicating apparatus that is able to perform IP-FAX communication without making the user aware of the attack and without any difficulty, even if the device recognizes a DoS attack or the like. communication that uses a SIP server on a network is performed by a communicating unit. Unauthorized communication from the communication performed by the communicating unit is detected. A port number of a receiving port of the communicating unit is changed when the unauthorized communication is detected. it is determined whether or not the detected unauthorized communication has passed through the SIP server. The communicating apparatus is controlled to request the SIP server to delete the port number of the receiving port that has not been changed yet if it is determined that the unauthorized communication has passed through the SIP server and to re-register on the SIP server a port number of a receiving port that has been changed if it is determined that the unauthorized communication has bypassed the SIP server.
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Citations
9 Claims
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1. A communicating apparatus comprising:
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a communicating unit configured to perform communication that uses a SIP server on a network; a detecting unit configured to detect unauthorized communication from the communication performed by said communicating unit; a changing unit configured to change a port number of a receiving port of said communicating unit when said detecting unit detects the unauthorized communication; a determining unit configured to determine whether or not the unauthorized communication detected by said detecting unit has passed through the SIP server; and a controlling unit configured to control the device to request the SIP server to delete the port number of the receiving port that has not been changed yet by said changing unit if said determining unit determines that the unauthorized communication has passed through the SIP server and to re-register on the SIP server a port number of a receiving port that has been changed by said changing unit if said determining unit determines that the unauthorized communication has bypassed the SIP server. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A controlling method for a communicating apparatus including a communicating unit configured to perform communication that uses a SIP server on a network, the method comprising:
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a detecting step of detecting unauthorized communication from the communication performed by said communicating unit; a changing step of changing a port number of a receiving port of said communicating unit when the unauthorized communication is detected in said detecting step; a determining step of determining whether or not the unauthorized communication detected in said detecting step has passed through the SIP server; and a controlling step of controlling the device to request the SIP server to delete the port number of the receiving port that has not been changed yet in said changing step if it is determined in said determining step that the unauthorized communication has passed through the SIP server, and to re-register on the SIP server a port number of a receiving port that has been changed in said changing step, if it is determined in said determining step that the unauthorized communication has bypassed the SIP server. - View Dependent Claims (9)
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Specification