On 1 June 2022, a Google Cloud Armor customer was hit with a Distributed denial-of-service (DDoS) attack over the Hypertext Transfer Protocol Secure (HTTPS) protocol that reached 46 million requests per second (RPS), making it one of the largest ever recorded Layer 7 DDoS attacks reported this year. By Debashis Pal.
In Wireshark, tls.handshake.type == 1 will show all instances of Client Hello. If there are too many of these packets coming from the same source IPs, this could be an attack …
This article is good analysis of Layer 7 attacks:
- HTTP flood DDoS attack
- How to analyse for HTTP flood attacks
- HTTP pipelining attack
- How to analyse HTTP pipelining
- SSL renegotiation and HTTPS flood DDoS attack
- How HTTPS works
- SSL/TLS renegotiation
- How to analyse for thc-ssl-flood attacks
- HTTPS flood DDoS attack
- How to analyse for HTTPS flooding
HTTP floods consist of a continuous legitimate session of HTTP GET or HTTP POST that GET and POST requests to a targeted web server. These requests are specifically designed to consume a significant amount of the servers resources. To achieve maximum impact, malicious actors usually employ botnets — many devices infected with malware. Malicious actors may also use other HTTP methods such as PUT and DELETE to make the attack more complex. Very informative!
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