The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2015
Filed:
Mar. 02, 2011
Ram Keralapura, San Jose, CA (US);
Antonio Nucci, San Jose, CA (US);
Ram Keralapura, San Jose, CA (US);
Antonio Nucci, San Jose, CA (US);
Narus, Inc., Sunnyvale, CA (US);
Abstract
A method for profiling network traffic of a network is presented. The method includes obtaining a cohesive flow-set based on a (port number, transport protocol) pair, identifying a statistically representative training set from the flow-set, identifying a network application associated with the (port number, transport protocol) pair, determining a packet content based signature term of the network application based on the training set, generate a nondeterministic finite automaton (NFA) using the signature terms to represent regular expressions in the training set, matching a portion of a new flow to the NFA in real time and identify a server attached to the new flow as executing the network application, and generate an alert in response to the match for blocking the new flow prior to the server completing a task performed using the new flow.