Why default VPC is not recommended?

Summary

Default VPC in AWS is not recommended for use due to its lack of proper security and auditing controls. It does not make the best use of critical VPC functionality, such as enabling flow logs for network auditing and troubleshooting.

Main Thought

The default VPC in AWS lacks essential security features and should not be used for creating new resources or present in Terraform configurations.

Key Points

1. Default VPC Disadvantages

The default VPC in AWS does not have critical security features that standard VPCs offer. It is advisable to create a non-default VPC that suits specific requirements.

2. Creating a Non-Default VPC

When deploying complex applications and using multi-tier architectures, it is recommended to create a non-default VPC to customize the network model and keep parts of the network private.

3. Default VPC vs. Non-Default VPC

The default VPC is automatically created for an AWS account when provisioning EC2 resources for the first time. In contrast, a non-default VPC needs to be created manually by the user.

4. Cost of Default VPC

There are no additional charges for creating and using the default VPC itself. However, usage charges for other AWS services, including EC2, still apply at their published rates.

5. Default VPC and Network Privacy

The default VPC includes an internet gateway and public subnets. Instances launched in default subnets have both private and public IPv4 addresses and can communicate with the internet through the internet gateway.

6. Deleting the Default VPC

If there are no AWS resources carrying production traffic in the default VPC, deleting it will have no impact. However, launching resources in other VPCs will require specifying the VPC and subnet IDs.

7. Default VPC Accessibility

A default VPC in AWS is public because each region’s default VPC has one public subnet per availability zone. Internet traffic passes through an Internet Gateway (IGW) in these subnets.

8. Changing the Default VPC

If multiple VPC networks are created in a region, it is possible to change the default VPC network for that region through the AWS Control Panel.

9. Deleting Default VPC in GCP

In Google Cloud Platform, the default VPC network can be deleted using the Google Cloud Console by navigating to VPC networks and selecting the “default” network.

10. AWS Charges for Default VPC

There are no additional charges for creating and using the default VPC itself. However, usage charges for other AWS services, including EC2, still apply at their published rates.

Why not use default AWS VPC

The default VPC lacks the proper security and auditing controls. The default VPC does not make the best use of critical VPC functionality. VPC flow logs – The default VPC does not enable flow logs. The feature allows users to track network flows in the VPC for auditing and troubleshooting purposes.
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What are the disadvantages of default VPC

Default VPC does not have a lot of the critical security features that standard VPC comes with, new resources should not be created in the default VPC and it should not be present in the Terraform.
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Is it good to use default VPC

A default VPC is suitable for getting started quickly, however, when you deploy complex applications and use multi-tier architectures you may need to keep parts of your network private or customize the network model, therefore it is recommended to create a non-default VPC that suits your specific requirements.
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What is the difference between default VPC and non-default VPC

The default VPC is a virtual network that is automatically created for the customer's AWS account when EC2 resources are provisioned for the first time. A non-default (also known as Customer VPC) is not created automatically when EC2 resources are provisioned, and the customer must create their own VPC.

Does default VPC cost money

There are no additional charges for creating and using the VPC itself. Usage charges for other Amazon Web Services, including Amazon EC2, still apply at published rates for those resources, including data transfer charges.

Is the default VPC private

A default VPC includes an internet gateway, and each default subnet is a public subnet. Each instance that you launch into a default subnet has a private IPv4 address and a public IPv4 address. These instances can communicate with the internet through the internet gateway.

Should we delete default VPC

However, if you don't have AWS resources that carry production traffic in your default VPC, then there's no impact. If you delete your default VPC, then you must launch resources in other VPCs. Without a default VPC or subnets, you must specify the VPC and subnet IDs when launching EC2 instance and other resources.

Do you get charged for default VPC

How will I be charged and billed for my use of Amazon VPC There are no additional charges for creating and using the VPC itself. Usage charges for other Amazon Web Services, including Amazon EC2, still apply at published rates for those resources, including data transfer charges.

Should we delete default VPC in AWS

However, if you don't have AWS resources that carry production traffic in your default VPC, then there's no impact. If you delete your default VPC, then you must launch resources in other VPCs. Without a default VPC or subnets, you must specify the VPC and subnet IDs when launching EC2 instance and other resources.

Is default VPC public

Each region comes with a default VPC. The VPC will have one "public" subnet per availability zone within the region. The subnets are "public" because internet traffic (that's not going through the private network itself) is routed through an Internet Gateway (IGW).

Can you change default VPC

If you have created multiple VPC networks in a region, you can change the default VPC network for that region. To change the default VPC network for a region from the DigitalOcean Control Panel, click Networking in the main navigation and then click the VPC tab.

Can I delete default VPC in GCP

Google Cloud Console

Navigate to VPC networks. Click the network named default . Click DELETE VPC NETWORK. If needed, create a new network to replace the default network.

Does Amazon charge for default VPC

Q. How will I be charged and billed for my use of Amazon VPC There are no additional charges for creating and using the VPC itself. Usage charges for other Amazon Web Services, including Amazon EC2, still apply at published rates for those resources, including data transfer charges.

Is default VPC chargeable in AWS

While there is no additional charge for creating and using an Amazon Virtual Private Cloud (VPC) itself, you can pay for optional VPC capabilities with usage-based charges. AWS provides features and services that give you the ability to customize control, connectivity, monitoring, and security for your Amazon VPC.

Is it okay to delete default VPC

You can delete a default subnet or default VPC just as you can delete any other subnet or VPC. However, if you delete your default subnets or default VPC, you must explicitly specify a subnet in one of your VPCs when you launch instances.

Can I delete default VPC security group

You can change the rules for a default security group. You can't delete a default security group.

Does every AWS account have a default VPC

Your Amazon Web Services account, if it was created after 2013-12-04, has a default VPC in each AWS Region.

Should I delete the default VPC in AWS

However, if you don't have AWS resources that carry production traffic in your default VPC, then there's no impact. If you delete your default VPC, then you must launch resources in other VPCs. Without a default VPC or subnets, you must specify the VPC and subnet IDs when launching EC2 instance and other resources.