| http://www.w3.org/ns/prov#value | - A firewall system for a communications system using an IP over ATM protocol, which allows a specific device within an ATM network to have a function of judging whether to grant access or not on the basis of at least an IP address of a location to which the access is made, thereby allowing a determination of whether to grant access or not to be made without establishing an ATM connection between th
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