AWS Certified Cloud Practitioner - 12 Mastering Amazon VPC

🚧 Building Your Virtual Fortress in AWS: Mastering Amazon VPC! ☁️
🌐 1. VPC & Subnets

- VPC (Virtual Private Cloud): Your isolated, private virtual network in the cloud. Remember, VPCs are regional resources!

- Subnets: Workload partitions inside your VPC that are bound to a single Availability Zone (AZ).

- Public vs. Private: Public subnets have a direct route to the internet (perfect for web servers). Private subnets are completely isolated (the ideal safe home for database backends).
🚪 2. Doors and Bridges (Gateways)

- Internet Gateway (IGW): Plugs into your VPC boundary to allow bidirectional public internet traffic.

- NAT Gateway: An AWS-managed bridge that lets instances in a private subnet securely fetch outbound updates while blocking unauthorized inbound connections from hackers.
🛡️ 3. Security Layers (Stateful vs. Stateless Firewalls)

- Security Groups: Stateful, instance-level firewalls that accept only ALLOW rules. Since they are stateful, return traffic is automatically allowed!

- Network ACLs (NACLs): Stateless, subnet-level firewalls that evaluate numbered ALLOW and DENY rules in strict order. Any return traffic must be explicitly allowed.
🔌 4. Advanced Connectivity

- VPC Endpoints: Keep your traffic completely off the public web by connecting your VPC privately to supported AWS services over AWS's internal fiber network.

- Transit Gateway: A central star-topology hub that provides true transitive routing across thousands of VPCs and your on-premises networks.
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Видео AWS Certified Cloud Practitioner - 12 Mastering Amazon VPC канала Mustafa Saad