| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a communications device of which a security level is improved by eliminating the risk of connection to an unsecured network, and to provide a network connection management program. <P>SOLUTION: A computer 1 includes a port closing means which closes all ports except a port required for acquisition of the address of an external device which is the other party of communication via networks; an address acquisition means which uses the port required for acquisition of the address of the external device to acquire the address of the external device; a discrimination means for discriminating whether the networks are appropriate, by using the address acquired by the address acquisition means after closing the ports; and a network connection management means which performs a control such that the ports for use in connection to networks being discriminated to be appropriate by the discrimination means are opened, and the connections to the networks discriminated as being not appropriate by the discrimination means are disconnected. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
