Sonicwall Inc.

Sonicwall US Holdings Inc.

Cuiping Yu

Zhong Chen

Hui Ling

Zunping Cheng

The present disclosure relates to a system, a method, and a non-transitory computer readable storage medium for deep packet inspection scanning at an application layer of a computer. A method of the presently claimed invention may scan pieces of data received out of order without reassembly at an application layer from a first input state generating one or more output states for each piece of data. The method may then identify that the first input state includes one or more characters that are associated with malicious content. The method may then identify that the data set may include malicious content when the first input state combined with one or more output states matches a known piece of malicious content.

Reassembly free deep packet inspection for peer to peer networks

Systems and methods are directed towards network data leakage prevention (DLP). More specifically, the systems and methods are directed towards using TCP (Transmission Control Protocol) data packets in conjunction with the DLP monitor. The network DLP utilizes TCP data packets to carry source user identity. With the source user identity, the DLP monitor can determine if sensitive data can be transmitted based on the provided user information and corresponding DLP policies for each user. Furthermore, the DLP monitor can determine if sensitive data can also be transmitted for particular users in situations where multiple users share the same IP address.

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Shanghai, China

Cuiping Yu