US 12,452,270 B2
Protecting networks from cyber attacks and overloading
Sean Moore, Hollis, NH (US); Steven Rogers, Leesburg, VA (US); and John Daniel Scoggins, Sr., Leesburg, VA (US)
Assigned to Centripetal Networks, LLC, Portsmouth, NH (US)
Filed by Centripetal Networks, LLC, Portsmouth, NH (US)
Filed on Nov. 4, 2022, as Appl. No. 17/980,623.
Application 17/980,623 is a continuation of application No. 17/089,911, filed on Nov. 5, 2020, granted, now 11,496,497, issued on Nov. 8, 2022.
Application 17/089,911 is a continuation of application No. 14/745,207, filed on Jun. 19, 2015, granted, now 10,862,909, issued on Dec. 8, 2020.
Application 14/745,207 is a continuation of application No. 13/838,471, filed on Mar. 15, 2013, granted, now 9,094,445, issued on Jul. 28, 2015.
Prior Publication US 2023/0126426 A1, Apr. 27, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 9/40 (2022.01); H04L 47/11 (2022.01)
CPC H04L 63/1425 (2013.01) [H04L 47/11 (2013.01); H04L 63/0227 (2013.01); H04L 63/0236 (2013.01); H04L 63/0263 (2013.01); H04L 63/14 (2013.01); H04L 63/1408 (2013.01); H04L 63/1441 (2013.01); H04L 63/1458 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, by a packet-filtering device located at an internet access point, a first group of packet filtering rules and a second group of packet filtering rules, wherein:
the first group of packet filtering rules comprise rules for handling network traffic, during an overload condition, associated with one or more first devices identified as associated with one or more emergency services and that is directed to one or more communication applications; and
the second group of packet filtering rules comprise rules for handling network traffic, during the overload condition, associated with one or more second devices identified as not being associated with one or more emergency services;
receiving, via a first network and during a first overload condition, a plurality of packets;
applying, based on a determination that a first subset of the plurality of packets are associated with the one or more first devices and based on a determination that the first subset of the plurality of packets are associated with the one or more communication applications, the first group of packet filtering rules to allow the first subset of the plurality of packets to access the one or more communication applications hosted on one or more application servers connected to a second network; and
applying, based on a determination that a second subset of the plurality of packets are associated with the one or more second devices, the second group of packet filtering rules to prevent the second subset of the plurality of packets from accessing the one or more communication applications hosted on the one or more application servers connected to the second network.