Customer Gateway

A Customer Gateway (CGW) is a virtual or physical device on the customer's side that connects to AWS via a Site-to-Site VPN (Virtual Private Network).

1. How it Works

1. The Customer Gateway is configured at the customer’s end (on-premises), and it establishes the VPN connection between on customer's side network and an AWS VPC.
2. It authenticates and encrypts the data that passes between the on-premises network and AWS, ensuring secure communication.

2. Common Use Case

1. Remote Connectivity: When on-premises network needs to securely connect to AWS resources, such as EC2 instances, databases, or storage.
2. Hybrid Cloud Deployments: When you are deploying hybrid cloud solutions (part of your application running on AWS and part on your on-premises network).
3. Site-to-Site VPN Use: Used when need a Site-to-Site VPN connection between your on-premises network and AWS, to maintain secure and private communication between the two environments.

3. List of Gateways in AWS

• Networking Gateways
  1. Internet Gateway (IGW)
  2. NAT Gateway (NGW)
  3. VPC Endpoint Gateway
  4. Transit Gateway
  5. Customer Gateway
  6. Virtual Private Gateway (VGW)
• Storage Gateways
  6. AWS Storage Gateway
  • S3 File Gateway
  • FSx File Gateway
  • Tape Gateway
  • Volume Gateway
• Application Integration Gateways
  7. Amazon API Gateway
• Hybrid and Edge Gateways
  8. Direct Connect Gateway