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:
Aug. 15, 2023

Filed:

May. 06, 2020
Applicant:

F-secure Corporation, Helsinki, FI;

Inventors:

Yury Yakovlev, Helsinki, FI;

Tero Kilkanen, Helsinki, FI;

Markus Palonen, Helsinki, FI;

Assignee:

F-Secure Corporation, Helsinki, FI;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/40 (2022.01); H04L 45/42 (2022.01); H04L 47/2466 (2022.01); H04L 69/163 (2022.01); H04L 69/16 (2022.01);
U.S. Cl.
CPC ...
H04L 63/166 (2013.01); H04L 45/42 (2013.01); H04L 47/2466 (2013.01); H04L 63/0227 (2013.01); H04L 63/0236 (2013.01); H04L 63/1441 (2013.01); H04L 63/20 (2013.01); H04L 69/163 (2013.01); H04L 69/169 (2013.01);
Abstract

A method of monitoring traffic by a router acting as a gateway between a first and second network is described. The router can receive data packets sent from the first device over the TCP connection and can send a TCP ACK packet to the first device in response to each data packet. The data packets can be stored without sending them to the second device. The stored data packets can be examined in order to determine whether to block or allow the TCP connection. In the event that it is determined to allow the TCP connection, the router can send each of the stored data packets to the second device. In the event that it is determined to block the TCP connection, the router can send a TCP RST message to each of the first and second devices in order to close the TCP connection.


Find Patent Forward Citations

Loading…