Information security – Access control or authentication – Network
Reexamination Certificate
2007-10-16
2007-10-16
Zia, Syed A. (Department: 2131)
Information security
Access control or authentication
Network
C726S003000, C726S013000, C726S014000, C726S015000, C713S153000, C713S154000, C709S238000, C709S239000, C709S240000, C709S241000, C709S242000, C709S243000, C709S244000
Reexamination Certificate
active
10255608
ABSTRACT:
A system and method for providing the ability to selectively share data in a network routing device with an associated host. The system and method employs a hardware firewall in the routing device which restricts the host such that it can only access areas in shared memory which contains data destined for the host. The routing device CPU notifies the host of pending data and the location of that data in the shared memory. The hardware firewall is also notified of the location in shared memory which the host may access. When the host attempts to read the data, the firewall ensures that only the stated memory area or areas are accessed by the host. Once the data has been read by the host, the firewall is notified to cancel the host's ability to access the shared memory until such time as a new packet destined for the host arrives in the routing device.
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Zia Syed A.
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