NashTech Insights

Table of Contents
aws networking

1. Introduction

Networking is a critical component of any cloud-based infrastructure, and AWS offers a comprehensive suite of networking services to help you build and manage secure, scalable, and reliable networks. So, in this article, we’ll introduce you to some of the key AWS networking services and concepts.

AWS Networking - VPC

2. Core AWS Networking Services

  • Amazon VPC (Virtual Private Cloud): A VPC is a logically isolated section of the AWS cloud where you can launch AWS resources, such as Amazon EC2 instances, Amazon RDS databases, and Amazon Elastic Load Balancing (ELB) load balancers. Besides that, VPCs provide a secure and flexible way to organize and manage your cloud resources.
  • Internet Gateway: An Internet Gateway is a highly available and scalable resource that allows you to connect your VPC to the public internet. As a matter of fact, resources in your VPC can communicate to the Internet.
AWS Networking - Internet Gateway
Internet Gateway

  • NAT Gateway: A NAT Gateway allows resources in a private subnet to communicate with the internet using a single public IP address. Therefore, this helps protect your resources’ private IP addresses from exposure to the public internet.
AWS Networking - NAT Gateway
NAT Gateway

  • Route Table: A Route Table is a set of rules determining how traffic is routed within your VPC. As a result, route tables control which resources can communicate with each other and the internet.
  • Security Group: A Security Group is a firewall that controls inbound and outbound traffic to your EC2 instances. So, security groups are used to protect your instances from unauthorized access.

3. AWS Networking Concepts

Subnets: Subnets are subdivisions of a VPC. Generally, they organize your resources and control traffic flow within your VPC.

  • A public subnet is a subnet in your VPC that has a route to the internet gateway. Due to this, the resources in the public subnet can communicate with the Internet.
  • A private subnet in your VPC does not have a route to the internet gateway. So, resources in private subnet can’t connect to the Internet.

AWS Networking - Subnets

  • ACL (Access Control List): An ACL is a list of rules that control inbound and outbound traffic to your Amazon S3 buckets. ACLs are used to protect your S3 buckets from unauthorized access.
  • DNS (Domain Name System): DNS is a hierarchical system that translates domain names into IP addresses. AWS provides a managed DNS service called Amazon Route 53 that you can use to manage your DNS records.

4. Designing and Deploying AWS Networks

When designing your AWS network, it’s important to consider your security requirements, scalability needs, and cost considerations. There are several factors to consider, such as:

  • The type of resources you will be deploying
  • The network traffic patterns between your resources
  • Your security requirements
  • Your scalability needs

Once you’ve considered these factors, you can start to design your network architecture. You must choose the right VPC size, subnet configuration, and security groups. You’ll also need to configure routing tables to control traffic flow between your resources.

5. Comparison


6. Conclusion

AWS provides a comprehensive suite of networking services that you can use to build secure, scalable, and reliable networks. Afterward, understanding the core AWS networking services and concepts allows you to design and deploy networks that meet your specific needs.

If you want to read more blogs about AWS, you can visit some blogs below:


Hung Le Manh

Hung Le Manh

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