Firewalls & Security Groups

Summary

Controlling what network traffic is allowed in and out of your cloud resources — security groups and network ACLs are the cloud-native mechanisms that serve this purpose.

• 1Configure a security group allowing only necessary traffic to a resource.
• 2Learn the principle of least privilege applied to network access: deny by default, allow explicitly.
• 3Understand the difference between stateful security groups and stateless network ACLs.