| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To eliminate the need for a user to consider a setting order and to prevent the occurrence of security holes due to wrong settings by automatically setting rules to be newly set, so that a problem is solved in which a technique for preventing the occurrence of security holes due to the wrong setting by correctly setting a new rule is required, even when the number of registered rules increases, in setting a new rule in a packet-filtering system. <P>SOLUTION: A rule comparison analysis section 204 is introduced into the packet-filtering system. The user 201 delivers a new rule to a rule-receiving unit 202. By only doing this, the unit 202 detects a rule which becomes a cause for making the new rule a waste from the existing rules, and sets it. <P>COPYRIGHT: (C)2004,JPO</p> |
