AWS: How To Setup A Site-to-Site VPN (Start to Finish) 2024

TechNgo
21 Feb 202417:32

Summary

TLDRIn this speedrun tutorial, Techno demonstrates how to set up a site-to-site VPN on AWS without the need for on-premises equipment. The video covers creating VPCs, EC2 instances, and a StrongSwan instance to mimic an on-premises router. It guides through the process of configuring a VPN connection, adjusting route tables for traffic forwarding, and testing connectivity with ICMP pings between AWS and the simulated on-premises network, providing a practical approach to cloud-based network extension.

Takeaways

  • 🚀 This is a speedrun tutorial for setting up a site-to-site VPN using AWS, with a focus on quick implementation rather than detailed explanations.
  • 🌐 The tutorial involves setting up two VPCs and EC2 instances, with one VPC representing the on-premises site and the other the AWS site.
  • 🔐 A StrongSwan EC2 instance is used as the router/firewall for the on-premises site, enabling the connection to AWS.
  • 🛠️ The tutorial does not cover the creation of the EC2 instances and VPCs in detail but assumes they are already set up.
  • 📋 The process includes creating a customer gateway, virtual private gateway, and site-to-site VPN connection within AWS.
  • 📝 Static routes are configured to ensure traffic is directed correctly between the on-premises and AWS sites.
  • ⚙️ The tutorial includes configuring StrongSwan on the EC2 instance to establish the VPN connection and handle traffic.
  • 🔄 Troubleshooting tips are provided for common errors, such as issues with starting the IPsec service.
  • 🖧 The final steps involve verifying the connection by pinging between the AWS and on-premises instances.
  • 👍 The video concludes with a successful ping test, confirming the site-to-site VPN setup is working correctly.

Q & A

  • What is the purpose of this video tutorial?

    -The video tutorial aims to demonstrate how to create a site-to-site VPN using AWS in a speedrun format, covering all necessary steps quickly without extensive explanations.

  • Why does the creator use a VPC as an 'on-prem' device in this demo?

    -The creator uses a VPC as an 'on-prem' device because they do not have an actual on-premises device available for testing. This setup simulates a real-world scenario where an on-premises network connects to AWS through a VPN.

  • What role does the 'strongSwan' EC2 instance play in this setup?

    -The 'strongSwan' EC2 instance acts as a router or firewall in the on-premises network, establishing a connection with AWS and serving as the customer gateway for the VPN.

  • Why does the creator rename VPC 2 to 'on-prem'?

    -The creator renames VPC 2 to 'on-prem' to avoid confusion and clearly differentiate between the AWS VPC and the simulated on-premises network.

  • Why is Amazon Linux 2 used instead of Amazon Linux 3 for the 'strongSwan' instance?

    -Amazon Linux 2 is used because Amazon Linux 3 does not support strongSwan, which is required for this demonstration.

  • What is the purpose of creating a Customer Gateway in AWS?

    -The Customer Gateway in AWS identifies the public IP address of the on-premises network (simulated by the strongSwan EC2 instance) to establish the VPN connection between AWS and the on-premises network.

  • What does it mean when the VPN tunnel status is 'up'?

    -When the VPN tunnel status is 'up,' it indicates that the site-to-site VPN connection between the AWS VPC and the on-premises network has been successfully established and is actively routing traffic.

  • Why is it important to stop the source/destination check on the strongSwan EC2 instance?

    -Stopping the source/destination check ensures that the strongSwan EC2 instance can forward traffic between different networks, which is necessary for routing traffic through the VPN.

  • What is the significance of modifying the route tables in this setup?

    -Modifying the route tables ensures that traffic is correctly routed between the AWS VPC and the on-premises network through the VPN, enabling communication between the two networks.

  • What troubleshooting step does the creator take when the IPsec service fails to start?

    -The creator reviews the configuration files for potential typos, re-applies the system control commands, and checks the configurations step-by-step to resolve the issue, which ultimately allows the IPsec service to start successfully.

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Étiquettes Connexes
AWSVPNEC2NetworkingCloud SetupSpeedrunAWS TutorialIT SecurityCloud NetworkingStrongSwan
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