NetScout Systems. has been granted a patent for a method to mitigate Distributed Denial of Service (DDoS) attacks. The process involves analyzing stored HTTP responses to identify patterns and keywords, generating hash values, and creating mitigation filter candidates based on acceptable patterns for enhanced network protection. GlobalData’s report on NetScout Systems gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on NetScout Systems, Cloud computing disaster recovery was a key innovation area identified from patents. NetScout Systems's grant share as of June 2024 was 72%. Grant share is based on the ratio of number of grants to total number of patents.
Ddos attack mitigation using http response analysis
The patent US12041079B2 outlines a method and system for mitigating Distributed Denial of Service (DDoS) attacks on protected computer networks. The method involves analyzing stored HyperText Transfer Protocol (HTTP) responses to extract specific characteristics, which are then used to identify patterns and keywords relevant to DDoS mitigation. Each identified pattern is assigned a hash value, which is stored alongside its HTTP characteristics in a hash structure. The process includes filtering candidates based on predetermined criteria, ensuring that only those patterns indicative of potential DDoS attacks are retained. Additionally, the method generates regular expressions from these candidates to be utilized in DDoS mitigation filters.
The system described in the patent also encompasses the interception of network traffic packets, which may include both Transmission Control Protocol (TCP) and Datagram Protocol (UDP) packets. These packets are stored in a designated storage device, such as Packet Capture (PCAP) files, for further analysis. The method focuses on HTTP responses with a payload value greater than zero and extracts various characteristics, including source and destination ports, packet lengths, and actual payloads. Furthermore, the system incorporates a counter mechanism to track the frequency of patterns, allowing for the sorting of hash values based on their occurrence. This structured approach aims to enhance the effectiveness of DDoS mitigation strategies by leveraging identified patterns and characteristics from network traffic.
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