COMMUNICATION CONTROL DEVICE, COMMUNICATION CONTROL METHOD, AND COMMUNICATION CONTROL PROGRAM

摘要

PROBLEM TO BE SOLVED: To suppress the expansion of damage caused by malware incorporated in a Web site due to a drinking station type attack or the like.SOLUTION: A communication control device 20 includes: a communication log storage part 201 for storing a communication log including the identification information of a user terminal 26 of an access source and the identification information of a Web site of an access destination in the case of performing access from a user terminal 26 belonging to a user NW2 to a Web site on an external network of the user NW2; an alteration information acceptance part 203 for accepting alteration information including the identification information of the altered Web site; and a communication control part 202 for, when the alteration information acceptance part 203 accepts the alteration information, specifying the user terminal 26 which has performed access to the Web site included in the alteration information by referring to the communication log in the communication log storage part 201, and for instructing an SDN controller 25 which controls the communication path of the user terminal 26 to restrict the communication of the specified user terminal 26.