Recommended Mitigation
Configure EC2 instances to allow access to TCP port 7000 (Cassandra Internode Communication) from specific IP addresses only. More information: <a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/authorizing-access-to-an-instance.html" target="_blank" rel="noopener noreferrer">https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/authorizing-access-to-an-instance.html</a>