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:
Nov. 21, 2023
Filed:
Apr. 16, 2020
F-secure Corporation, Helsinki, FI;
Jarno Niemelä, Helsinki, FI;
F-Secure Corporation, Helsinki, FI;
Abstract
It is provided a method, comprising monitoring if a firewall receives a first packet and a second packet, wherein the first packet is directed to a IP address and a first port number; the second packet is directed to the IP address and a second port number; a hole through a firewall is punched for the IP address a hole port number different from the first port number and the second port number; the first packet has a first payload; the second packet has a second payload; and the method comprises checking if the first payload is substantially the same as the second payload; causing the firewall to block the first packet and the second packet if the firewall receives the first packet and the second packet and the first payload is substantially the same as the second payload.