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Systems and methods for improved network based content inspection

A technology of content inspection and content, applied in the direction of transmission system, digital transmission system, data exchange network, etc., can solve problems that cannot be solved, system resources are exhausted, and the final payload size is increased

Active Publication Date: 2009-02-11
WEDGE NETWORKS
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AI Technical Summary

Problems solved by technology

While this method effectively reduces the calculations required to check the same content in the NBCI system along the path of content transmission, the method of attaching a DSP to the payload will cause compatibility issues downstream, as the downstream system will have to understand this DSP
Also, for smaller payloads typical for e.g. Short Message Service (SMS), this approach significantly increases the size of the final payload
Furthermore, for larger archived payloads, this method cannot take advantage of the fact that some components of the payload may have been inspected
In addition, this method cannot solve the problem of system resource exhaustion caused by the high parallelism of network data traffic or the problem of system resource "live lock" caused by checking large content

Method used

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  • Systems and methods for improved network based content inspection
  • Systems and methods for improved network based content inspection
  • Systems and methods for improved network based content inspection

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Embodiment Construction

[0043] Referring to the illustrations, systems and methods for optimizing computations required to perform content inspection on network packet payloads received in parallel are described. In the context of this description, "parallel" means that a computer network receives data payloads within a short period of time such that system resources consider the data payloads to have been effectively received simultaneously or within a short period of time.

[0044] Referring to FIG. 1 , a content recognition module (CRM) 12 receives a data payload 14 . The CRM 12 checks the data payload to determine whether the contents of this data payload 14 have been previously checked or are currently being checked. If the CRM 12 recognizes that the content of the payload 14 has been previously inspected, the CRM will deliver the recognized payload 14a (and the inspection results as explained below) without subjecting the payload to content inspection. If the CRM 12 determines that the payload...

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Abstract

The invention relates to network based content inspection (NBCI). More specifically, the invention provides systems and methods for improved NBCI in complex networks that are typical for enterprises and service providers. These networks are shared by large numbers of concurrent users who send and retrieve application content of various sizes via a variety of communication protocols. This invention improves the efficiency of the NBCI of an individual communication session by learning from the processing results of other communication sessions which may be carried via different network protocols. In addition, the invention provides methods that do not weaken the overall security for the network and that improve the stability of NBCI systems by minimizing the risk of system resource exhaustion if subjected to a burst of large payloads. The invention also improves perceived network stability by preventing the system resources from being ''live-locked'' by a few large content inspection tasks. Further still, the invention improves the cost-effectiveness of NBCI by allowing the optimization knowledge gained by one NBCI node be shared with other nodes.

Description

technical field [0001] The present invention relates to Network Based Content Inspection (NBCI). More specifically, the present invention provides systems and methods for improved NBCI in the complex networks typical of enterprises and service providers. These networks are shared by a large number of parallel users sending and retrieving application content of various sizes via multiple communication protocols. The present invention improves the efficiency of NBCI for individual communication sessions by learning the processing results of other communication sessions that may be carried over different network protocols without compromising the overall security of the network. Additionally, the present invention provides a method of improving the stability of an NBCI system by minimizing the risk of system resource exhaustion when subjected to bursts of larger payloads. The present invention also improves perceived network stability by preventing the system resources from bei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L9/00G06F21/56
CPCH04L67/2819H04L63/0245H04L67/2842H04L67/28H04L63/0227H04L63/1416H04L67/564H04L67/56H04L67/568
Inventor 森下功张鸿文哈萨木·基纳维
Owner WEDGE NETWORKS
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