Public and Private Subnets

Creating and configuring a Virtual Private Cloud (VPC) within AWS can be a simple or difficult process. It all very much depends on the complexity of your requirements. For example, how many subnets and hosts will you require? Will you be using one VPC or peering multiple VPCs together? Do you need to establish connectivity back to your on-premise network? Do you need internet connectivity for your Private instances? These and many more questions need to be asked and answered before you start to design your VPC infrastructure.

As a part of this process, you will need to understand VPC Subnet configurations and VPC routing, to ensure you architect your solution correctly and efficiently.

This AWS Virtual Private Cloud: Subnets and Routing lesson looks and VPC Subnets and VPC Routing in detail, providing examples of both across different configurations and solutions and how to best implement your network design.

Lesson lectures

VPC Subnets:

• VPC CIDR Blocks – This lecture focuses on the effect of subnetting your VPC CIDR Block
• Why Subnet your VPC – This lecture looks at some of the reasons why you may want to subnet your VPC, by looking at the advantages and benefits
• VPC Subnets – This lecture dives into at what a VPC Subnet looks like within the Management Console and its associated components such as Network Access Control Lists (NACLs)
• Public and Private Subnets – This lecture looks at the differences between both Public and Private subnets within a VPC
• VPC Peering: Subnet Considerations – This lecture focuses on some of the considerations when architecting your subnets in different VPC Peering configurations
• Flow Logs: VPC Subnets – This lecture dives into at what a VPC Subnet looks like within the Management Console and its associated components such as Network Access Control Lists (NACLs)
• Demonstration: Creating a VPC and Subnets – This lecture provides a demonstration on how to set up and configure a VPC with both Public and Private subnets

VPC Routing:

• Routing Fundamentals and Route Tables – This lecture introduces AWS routing and its Routing tables by breaking down all the components within it
• Routing Priorities – This lecture explains how the routing priorities are defined for overlapping routes within the same route table
• Routing: VPC Peering – This lecture looks are different routing configurations for multiple VPC peering scenarios
• Routing: VPN Connection via a Virtual Private Gateway – This lecture looks at routing configurations for virtual Private Gateways
• Routing: Internet Gateways and NAT Gateways – This lecture looks at the routing configurations for both IGWs and NAT Gateways and the dependencies involved
• Routing: VPC Endpoints – This lecture looks at the automatic routing configuration when creating a VPC Endpoint