| 摘要 |
PROBLEM TO BE SOLVED: To use a network application over network domains by making a communication packet pass through a boundary between the network domains while maintaining security policies.SOLUTION: Upon receiving communication information destined to a second host computer from a first internal network, a first communication processing device adds additional information to the communication information if the transmission source of the communication information is a host computer connected to the first internal network and transmits the information to a communication mediation device, and if not, stops the transmission of the communication information. Upon receiving the communication information from the first communication information processing device, the communication mediation device verifies whether the added information added by the first communication information processing device exists, transmits the communication information to a second information processing device if the additional information is confirmed, and stops the transmission of communication information if the additional information is not confirmed. |
