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Table of contents
1.
Introduction
2.
What is VPN?
3.
What is AWS VPN?
4.
AWS Site-to-Site VPN
5.
Features of AWS Site-to-Site VPN
5.1.
Secure connectivity
5.2.
High availability
5.3.
Accelerate Applications
5.4.
Network Address Translation (NAT) Traversal
5.5.
Robust Monitoring
5.6.
Highly Customisable
6.
AWS Client VPN
7.
Features of Client VPN
7.1.
Authentication
7.2.
Connection Management and Elasticity
7.3.
Authorization and Secure connectivity
7.4.
Remote Access and Compatibility
8.
FAQs
8.1.
What is VPN?
8.2.
What is Amazon CloudWatch?
8.3.
What is a Site-to-Site VPN?
8.4.
What is Client VPN?
9.
Conclusion 
Last Updated: Mar 27, 2024
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AWS VPN

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Introduction

Amazon Web Services, Inc. is an Amazon company that offers on-demand cloud computing platforms and APIs to people, businesses, and governments on a pay-as-you-go basis. These cloud computing web services provide a wide range of fundamental abstract technological infrastructure and distributed computing building blocks and tools.

Before learning about AWS VPN, we need to know what VPN exactly is.

What is VPN?

A VPN, or Virtual Private Network, connects a private network to a public network, allowing users to send and receive data as if their computers were directly connected to the private network. A VPN enhances the private network's capability, security, and control.

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What is AWS VPN?

AWS Virtual Private Network solutions connect your on-premises networks, remote offices, client devices, and the AWS global network in a secure manner. AWS VPN comprises two components: AWS Site-to-Site VPN and AWS Client VPN. Each service offers a highly available, managed, and expandable cloud VPN solution to safeguard your network traffic.

AWS Site-to-Site VPN establishes secure connections between your network and Amazon Virtual Private Clouds or AWS Transit Gateways. AWS Client VPN links your users to AWS or on-premises resources to manage remote access via a VPN software client.

You must be confused about AWS Site-to-Site VPN and AWS CLient VPN. Don't worry; we got it covered.

AWS Site-to-Site VPN

AWS Site-to-Site VPN is a fully managed solution that uses IP Security (IPSec) tunnels to establish a secure connection between your data center or branch office and your AWS resources. When you utilize Site-to-Site VPN, you may connect to your Amazon Virtual Private Clouds (VPC) and the AWS Transit Gateway, and two tunnels are used per connection for greater redundancy.

Features of AWS Site-to-Site VPN

Secure connectivity

AWS Client VPN uses OpenVPN to negotiate data channel settings, which employs a TLS encrypted control channel. The data channel is SSL-encrypted, but extra precautions are included.

High availability

You may construct failover and CloudHub solutions with AWS Site-to-Site VPN and AWS Direct Connect. CloudHub allows your distant sites to interact with one another and the VPC. It runs on a straightforward hub-and-spoke topology that may be used with or without a VPC. Customers with many branch offices and existing Internet connections that want to construct a convenient, possibly low-cost hub-and-spoke architecture for primary or backup communication between these remote locations may consider this concept.

Accelerate Applications

By collaborating with AWS Global Accelerator, the Accelerated Site-to-Site VPN option increases the performance of your VPN connection. The AWS Global Accelerator automatically routes traffic to the closest AWS network endpoint with the highest version.

Network Address Translation (NAT) Traversal

AWS Site-to-Site VPN enables NAT Traversal applications, allowing you to utilize private IP addresses on private networks behind routers while only using a single public IP address to access the internet.

Robust Monitoring

AWS Site-to-Site VPN may submit metrics to CloudWatch, giving you more insight and monitoring. CloudWatch also lets you transmit your custom metrics and add data points in any order and pace. As an ordered set of time-series data, you may extract statistics about those data points.

Highly Customisable

AWS Site-to-Site VPN provides tunnel configuration options such as inner tunnel IP address, pre-shared key, and Border Gateway Protocol Autonomous System Number (BGP ASN). You may set up numerous secure VPN tunnels to boost bandwidth for your apps or robustness in the event of downtime. In addition, AWS Site-to-Site VPN on AWS Transit Gateway supports equal-cost multi-path routing (ECMP) to boost traffic capacity across many channels.

AWS Client VPN

AWS Client VPN is a fully-managed remote access VPN solution that allows your distant employees to access resources on AWS and on-premises networks securely. It is fully elastic and adjusts up or down automatically, depending on demand. When transferring apps to AWS, your users have the same access to them before, during, and after the migration. The OpenVPN protocol is supported by AWS Client VPN, including the software client.

Features of Client VPN

Authentication

AWS Client VPN will use either Active Directory or certificates to authenticate. Client VPN interacts with AWS Directory Services, which connects to your current on-premises Active Directory, eliminating the need for data replication from your existing Active Directory to the cloud. Certificate-based authentication with Client VPN interfaces with AWS Certificate Manager to simplify certificate provisioning, management, and deployment.

Connection Management and Elasticity

Amazon CloudWatch Logs may monitor, store, and access log files from AWS Client VPN connection logs. The corresponding log data may then be retrieved from CloudWatch Logs. You may quickly monitor, do forensics investigation, and terminate particular connections while maintaining complete control over who has access to your network.

Authorization and Secure connectivity

AWS Client VPN supports network-based authorization, which allows you to set access control rules that restrict access to specific networks based on Active Directory groups.

AWS Client VPN uses the secure TLS VPN tunnel protocol to encrypt communications. A single VPN tunnel finishes at each Client VPN endpoint, allowing users to access all AWS and on-premises services.

Remote Access and Compatibility

The AWS Client VPN service is intended to connect devices to your network. It gives you the option of using an OpenVPN-based client, allowing employees to utilize the device of their choice, including Windows, Mac, iOS, Android, and Linux-based machines.

FAQs

What is VPN?

Ans: A VPN or Virtual Private Network connects a private network to a public network, allowing users to transmit and receive data. Their computer equipment was directly linked to the private network. A VPN provides increased functionality, security, and control of the private network.

What is Amazon CloudWatch?

Ans: Amazon CloudWatch continuously monitors your Amazon Web Services (AWS) resources and the apps you run on AWS. CloudWatch may be used to gather and track metrics, variables that can be measured for your resources and applications.

What is a Site-to-Site VPN?

Ans: A virtual private network (VPN) that connects two or more networks, such as a corporate network and a branch office network, is a site-to-site VPN.

What is Client VPN?

Ans: AWS Client VPN is a managed client-based VPN solution that allows you to securely access AWS resources as well as those on your local network.

Conclusion 

In this article, we have extensively discussed the AWS VPN. We also discussed what VPN, Site-to-site VPN, and Client VPN are.

We hope that this blog has helped you enhance your knowledge regarding AWS VPN and if you would like to learn more, check out our article on Important AWS Interview QuestionsEconomics of Cloud Computing.

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