The following are some countermeasures for use against DDoS attacks:
Implementing detection mechanisms, especially signal analysis techniques
Deploying high-availability solutions and redundancy resources
Disabling non-required services
Traffic pattern analysis
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month, and much more.