AWS Certified Solutions Architect Associate (SAA-C02) Exam Prep Course - Firewalls in AWS

The video tutorial discusses the concepts of firewalls in AWS, focusing on security groups and network access control lists (ACLs). It explains the stateful nature of security groups, their application to network interfaces, and the importance of configuring inbound and outbound rules. The tutorial also covers network ACLs, highlighting their non-stateful nature and their role in controlling traffic at the subnet level. The video emphasizes the importance of understanding these concepts for effective AWS security management.

What is the main reason the instructor prefers not to collectively refer to security groups and network ACLs as firewalls?

• It is a common industry practice.

• It is a requirement by AWS.

• It adds to confusion.

• It simplifies the understanding of AWS security.

What is a key characteristic of security groups in AWS?

• They are stateless.

• They require manual outbound rules.

• They are stateful.

• They are applied to subnets.

Where are security groups applied in AWS?

• To subnets.

• To VPCs.

• To network interfaces.

• To EC2 instances directly.

What is a key difference between network ACLs and security groups?

• Network ACLs are stateful.

• Security groups are stateless.

• Network ACLs are stateless.

• Security groups apply to subnets.

What must be done when configuring network ACLs to ensure proper traffic flow?

• Only configure inbound rules.

• Only configure outbound rules.

• Configure both inbound and outbound rules.

• No configuration is needed.

Why is a defense-in-depth strategy important in AWS?

• It is required by AWS.

• It simplifies network management.

• It reduces costs.

• It provides multiple layers of security.

What is the benefit of using multiple security tools at different OSI layers?

• It eliminates the need for network ACLs.

• It reduces the need for security groups.

• It deters attackers by providing layered security.

• It increases system complexity.