Data leak protection in upper layer protocols
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United States of America Patent
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Sep 13, 2016
Issued Date -
N/A
app pub date -
Nov 12, 2015
filing date -
Sep 10, 2014
priority date (Note) -
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Abstract
Methods and systems for Data Leak Prevention (DLP) in a private network are provided. A data structure is maintained within a network security appliance identifying candidate upper layer protocols, corresponding commands of interest and a corresponding suspect field within each of the commands that is to be subjected to DLP scanning as a result of its potential for carrying sensitive information. A packet is received by the network security appliance. A protocol associated with the packet is identified. It is determined whether the identified protocol is among those of the candidate protocols. Responsive to an affirmative determination and when a command represented by the packet is among those of the corresponding commands of interest for the candidate protocol, then a DLP scan is performed on the packet. Otherwise, the packet is allowed to pass through the network security appliance without being subject to a DLP scan.
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