| CPC H04L 51/063 (2013.01) [H04L 51/08 (2013.01); H04L 51/212 (2022.05); H04L 51/214 (2022.05)] | 11 Claims |
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1. A communication control apparatus comprising:
processing circuitry configured to implement
a file existence determination section configured to determine, when a message is transmitted from an information processing apparatus to one or more destinations via a network, whether the message include at least one attached file;
an approval section configured to acquire approval of transmission of said at least one attached file from an approver, when the file existence determination section processing circuitry has determined that the message to be transmitted includes said at least one attached file;
a transmission control section configured to transmit the message including said at least one attached file to said one or more destinations, on condition that the approval section has received approval of transmission of said at least one attached file from the approver;
a level storage configured to store confidential levels indicating disclosure levels for confidential information for predetermined destinations;
a discrimination section configured to discriminate each of the one or more destinations as to whether the one or more destinations are at a confidential level requiring approver's approval when the at least one attached file is transmitted, based on the confidential levels stored in the level storage, when the file existence determination section has determined that the message to be transmitted includes said at least one attached file, wherein the transmission control section transmits said at least one attached file for which approval has been acquired from the approver with the approval section at least to the one or more destinations discriminated with the discrimination section as a destination being at the confidential level requiring approval;
a rule storage configured to store at least a transmission rule indicating whether approval by the approver is required for transmission of the at least one attached file; and
a transmission decision section configured to decide whether approval by the approver is required, based on the transmission rule stored in the rule storage, for said at least one attached file to be transmitted to the one or more destinations discriminated with the discrimination section as the destination being at the confidential level requiring approval, wherein
the transmission control section transmits the at least one attached file decided with the transmission decision section as an attached file requiring approval by the approver, on condition that approval has been acquired with the approval section
the rule storage stores the transmission rule in accordance with confidential properties of the at least one attached file, the confidential properties being values specified from file property information and enabling specification of data contents of the at least one attached file without determining the data contents of the at least one attached file included in the message, items “approval is required”, “encryption is required” and “transmission is impossible” being provided in association with the confidential properties with which the at least one attached file may be a confidential file with disclosure restriction, the items being provided for each of the at least one attached file, and
the transmission decision section decides whether the at least one attached file matches any of the confidential properties in the transmission rule, for each of said at least one attached file to be transmitted to the one or more destinations, and decides that the at least one attached file requires approval by the approver when the attached file matches any of the confidential properties.
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