This IP address comes from the IP pool that is not known to the underlying network – Amazon VPC. NAT: A VPN client is given an IP address once a tunnel to the remote access server is established. Two strategies for assigning and managing these addresses (or “IP pool”) within Amazon VPC are network address translation (NAT) and routed IP pools. VPN clients require IP addresses to access network resources within Amazon VPCs or on-premises network. Instead, we focus on IP address management, routing, and common architectural approaches.Īrchitecture patterns and IP address management We are not going to discuss all possible VPN software options in this blog post. Some solutions even provide AWS Quick Start guides, simplifying the deployment even further. There are many possible options for EC2-based remote access solutions available in the AWS Marketplace. Here we look at common network architecture options.įigure 1: Remote access solution on Amazon EC2 with third-party VPN software. However, the AWS network setup necessary to support third-party VPN solutions is not trivial. Customers gain full access to AWS resources and to on-premises resources. Remote access VPN on Amazon EC2ĭeploying VPN endpoints directly on Amazon EC2 helps customers implement and scale these solutions more quickly. In this post, we specifically focus on third-party VPN software running on top of Amazon EC2. This includes well-known third-party software like Cisco An圜onnect, Palo Alto GlobalProtect, OpenVPN, and others. AWS customers can also use their existing solutions on Amazon EC2. The benefit is the ability to elastically increase the number of concurrent VPN clients connecting to the network when required. While AWS offers the managed and elastic AWS Client VPN service, some AWS customers are already using third-party remote access solutions. VPN clients use AWS internet connectivity as an entry point, and the flexibility of Amazon EC2 to scale capacity behind remote access VPN. This not only allows access to resources within AWS, but using hybrid connectivity, also to on-premises resources. AWS gives you the ability to extend existing on-premises remote access VPN solutions to the cloud.
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