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AWS Foundational Security Best Practice

EC2.19

Security groups should not allow unrestricted access to ports with high risk

Severity

Cloud Platforms

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CRITICAL

AWS

Amazon EC2

This control checks whether unrestricted incoming traffic for the security groups is accessible to the specified ports [3389; 20; 23; 110; 143; 3306; 8080; 1433; 9200; 9300; 25; 445; 135; 21; 1434; 4333; 5432; 5500; 5601; 22; 3000; 5000; 8088; 8888] that have the highest risk. This control fails if any of the rules in a security group allow ingress traffic from 0.0.0.0/0 or ::/0 for those ports.

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