Network security device

Details Network security device Network security device

H - Electricity

04

L

H04L 9/00 (2006.01) H04L 12/26 (2006.01) H04L 29/02 (2006.01)

Patent

CA 2587867

A network security device which acts as an "airlock" for traffic between a communications device and a network. Data is screened using rules based analysis by the security device to counter various threats, including viruses, phishing, attempts to "hijack" communications, communications with known malicious addresses or unknown addresses, and transmission of sensitive information. Data packets can be reassembled into files for screening, and decoded or expanded as necessary, but is never executed. The data path for the data being screened is kept separate from the operations of the network security device itself, so that the device is incorruptible - its programming cannot be compromised from outside sources. Updates for rules and entry of sensitive data for screening, etc., must be done through a physical interface, not via the normal data communications channel. The device is invisible - it cannot be "seen" by the network, and thus cannot be attacked.

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