Configure multiple public subnets in a single AWS VPC.

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Hi everyone,

I configured one subnet in my own VPC. Can I configure more than one public or private subnets in my VPC? Is it secure?

Thank You

Mar 18 in AWS by akhtar
• 25,210 points
263 views

1 answer to this question.

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Hi@akhtar,

Yes, you can configure multiple public subnets in a single AWS VPC. VPC is a virtual network dedicated to your AWS account. It is an isolated from the other virtual networks in the AWS Cloud.

When you create a VPC you specify the range of IPv4 addresses for the VPC in the form of Classless inter domain routing (CIDR) blocks.

For Example: 192.168.0.0/16 is the primary CIDR block for your VPC.

You can create 3 types of subnets in VPC:

  1. Public Subnet: If a subnets traffic is routed to an internet gateway, the subnet is known as public subnet

  2. Private Subnet: If a subnet doesn’t have a route to an internet gateway, the subnet is known as a private subnet.

  3. VPN-Only Subnet: If a subnet doesn’t have a route to an internet gateway, but has its traffic routed to a virtual private gateway for a VPN connection. The subnet is known as the VPN-Only Subnet.

Total you can create 254 subnets according to the above given example.

Hope this will help.

Thank You

answered Mar 18 by MD
• 57,060 points

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