AWS Cloud Networking: VPC and Subnets

AWS Cloud Networking

Virtual Private Cloud (VPC)

• A virtual private cloud (VPC) is a virtual network dedicated to your AWS account, allowing for customized networking configurations.
• Supports IPv4 and IPv6 and allows you to create a virtual private cloud (VPC) with a range of IP addresses.

Subnets

• A subnet is a range of IP addresses in your VPC, allowing for organized and isolated networks within the VPC.
• Multiple subnets can be created within a VPC, and each subnet must be a subset of the VPC's IP address range.
• Supports public and private subnets, offering flexibility in network architecture.

Route 53

• Route 53 is a highly available and scalable Domain Name System (DNS) service, allowing you to register domain names and route internet traffic to your resources.
• Supports health checking, traffic flow control, and domain name registration.

Elastic IP Addresses

• Elastic IP addresses are static, public IP addresses that can be allocated to an instance or a network interface.
• Supports IPv4 and IPv6, and allows you to maintain a consistent IP address even if the underlying instance is replaced.

Elastic Load Balancer (ELB)

• Elastic Load Balancer (ELB) is a load balancer that automatically distributes incoming traffic across multiple instances.
• Supports multiple protocols (HTTP, HTTPS, TCP, and UDP), health checking, and auto scaling.

Network Access Control Lists (NACLs)

• NACLs are a set of rules that control incoming and outgoing traffic at the subnet level.
• Supports allow and deny rules for specific protocols and ports, and are evaluated in order with the last rule being the default deny rule.

Security Groups

• Security Groups are a set of rules that control incoming and outgoing traffic at the instance level.
• Supports allow rules for specific protocols and ports, and are evaluated in order with the last rule being the default deny rule.

Direct Connect

• Direct Connect is a dedicated, high-speed network connection from your premises to AWS.
• Supports multiple connections and locations, and allows you to bypass the internet and establish a secure, private connection to AWS.

VPN

• VPN is a secure, dedicated network connection from your premises to AWS over the internet.
• Supports multiple connections and locations, and allows you to establish a secure, private connection to AWS over the internet.

Learn about AWS Virtual Private Cloud (VPC) and subnets, including configuration, IP addresses, and more. Test your knowledge of these essential AWS cloud networking concepts.