AWS Solutions Architect Associate (SAA-C02) Exam Prep Course - 2021 UPDATED! - Amazon Web Services (AWS) Security Groups

The video tutorial explains the concept of security groups in AWS, highlighting their role as firewalls for instances within a virtual private cloud. It contrasts traditional security groups with AWS security groups, emphasizing their function in controlling network traffic through ingress and egress rules. The tutorial also covers stateful processing, where outgoing communications allow incoming responses. Additionally, it introduces network access control lists (NACLs), which apply to subnets and support both allow and deny rules, unlike security groups. NACLs are stateless and prioritize rules based on order.

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