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.

Date of Patent:
Sep. 27, 2022

Filed:

Feb. 11, 2020
Applicant:

Barracuda Networks, Inc., Campbell, CA (US);

Inventors:

Pablo German Sole, Woodside, CA (US);

Jose Luis Ferras Pereira, San Mateo, CA (US);

Sinan Eren, Woodside, CA (US);

Luisa Marina Moya Praca de Araujo Lima, Oporto, PT;

Assignee:

Barracuda Networks, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04L 9/40 (2022.01); H04L 69/163 (2022.01);
U.S. Cl.
CPC ...
H04L 63/1483 (2013.01); H04L 63/0272 (2013.01); H04L 63/101 (2013.01); H04L 69/163 (2013.01);
Abstract

A reverse TCP/IP stack infrastructure is disclosed. In an example use, an application executing on a client device as an operating system extension that uses a virtual private network stack of the operating system intercepts a first IP packet generated by a client program. The application determines that the first IP packet comprises a Transmission Control Protocol synchronize message and opens a socket to a destination Internet Protocol address and destination port. A synchronize acknowledgement is received. A packet to transmit to the client program is synthesized that includes a synchronize acknowledgment.


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