Basics of networking on AWS

Networking on Amazon Web Services (AWS) is a crucial aspect of building and managing cloud-based applications and services. AWS provides a wide range of networking services and features that allow you to create scalable, secure, and highly available network architectures. Here are some of the key networking components and concepts in AWS:

1. Amazon Virtual Private Cloud (VPC):

   • VPC is the fundamental building block for networking on AWS. It allows you to create an isolated section of the AWS cloud where you can launch resources like EC2 instances, RDS databases, and more.

   • With VPC, you have full control over your network, including defining subnets, route tables, and security groups.

2. Subnets:

   • Subnets are subdivisions of a VPC. You can place resources within different subnets to control their network access and segmentation.

3. Internet Gateway (IGW):

   • An IGW allows your VPC to connect to the public internet, enabling resources to communicate with the outside world.

4. Virtual Private Network (VPN):

   • AWS offers several VPN options, including Site-to-Site VPN and AWS Client VPN, to securely connect your on-premises network to your VPC.

5. Direct Connect:

   • AWS Direct Connect provides a dedicated network connection from your on-premises data center to AWS, bypassing the public internet for more reliable and secure communication.

6. Elastic Load Balancer (ELB):

   • ELB distributes incoming traffic across multiple instances, improving the availability and fault tolerance of your applications.

7. Security Groups:

   • Security Groups act as virtual firewalls for your EC2 instances. You can control inbound and outbound traffic by defining rules in these groups.

8. Network Access Control Lists (NACLs):

   • NACLs are stateless, network-level access control lists that control traffic at the subnet level.

9. Route Tables:

   • Route tables determine how network traffic is directed within a VPC. You can configure routes to route traffic between subnets and to the internet.

10. Peering Connections:

    • VPC peering allows you to connect multiple VPCs, enabling them to communicate with each other as if they were on the same network.

11. Transit Gateway:

    • Transit Gateway simplifies network connectivity between multiple VPCs and on-premises data centers.

12. Virtual Private Network (VPC) Endpoints:

    • VPC endpoints allow you to privately connect your VPC to AWS services like S3 and DynamoDB without using an internet gateway.

13. AWS Global Accelerator:

    • This service improves the availability and performance of applications by routing traffic over the AWS global network.

14. AWS CloudFront:

    • CloudFront is a content delivery network (CDN) service that caches and serves content closer to end-users, improving performance and reducing latency.

15. VPC Flow Logs:

    • Flow logs capture information about IP traffic going to and from network interfaces in your VPC.

When designing your network on AWS, you should consider the AWS-Well Architected to . AWS provides various tools and services to help you meet these requirements. Planning and implementing the right networking architecture is crucial to building robust and reliable applications in the AWS cloud.

Thank you for reading

Driss Attoumi