---
title: "Configure Subnets"
canonical: "https://docs.infoblox.com/space/DeploymentGuideIntegratingB1TDwithAWSRoute53/664404158/Configure%20Subnets"
format: markdown
---
To configure a NAT gateway, you will need a Private and Public subnet. To create these subnets, perform the following steps:

1. Log in to your AWS account. Once logged in, input **VPC** into the *search bar* located at the top of the AWS interface.

![image-20240409-210516.png](media://3f795dec-c8ff-40fa-99b3-67189605ec2a)

2. Click the text** VPC** in the list that is revealed.


![image](media://b072640d-81dc-455f-b1c1-0990da26b056)

3. In the left navigation panel of the VPC page, click **Subnets**.

![image](media://f8f123c9-a4c9-4f0e-9f41-3194a987c937)

4. Click the **Create subnet** button located on the top right of the *Subnets *page. *Note that this will be a public subnet intended for external traffic via the NAT Gateway.*

![image](media://937c4221-e120-49d1-ba8f-19453aca43a0)

5. On the *Create Subnet* page perform the following steps:
  - Select the **VPC** that you would like to associate with this Subnet via the *VPC ID *dropdown menu

![image](media://dd4d811f-ab8f-444e-87a8-2504b17f5707)

- In the Subnet settings panel that is revealed, input a **Subnet name.**

![image](media://b5c9bffa-5b37-419c-942b-e17c5b84597b)

- Select an **Availability Zone** via the Availability Zone dropdown menu.

![image-20240409-210058.png](media://811d0787-9f17-475d-bbd7-61b3be8d0663)

- Input an IPv4 CIDR via the **IPv4 CIDR block**. *Note pick a range that allows remaining IPs in the VPC as a second Subnet will be created later in this guide:*

![image-20240409-210221.png](media://12ff5af8-531e-4c50-8e94-625a4a1f8cd4)

- Click **Create subnet** to confirm the creation of the subnet.

![image](media://e33807c2-08f8-45f3-838d-d15588dc95c4)

6. Click the **Create subnet** button located on the top right of the Subnets page. *Note that this will be a private subnet intended for internal traffic.*

![image](media://937c4221-e120-49d1-ba8f-19453aca43a0)

7. On the *Create Subnet* page perform the following steps:
  - Select the same **VPC** that you selected with the previously created Subnet via the *VPC ID *dropdown menu.

![image-20240409-210320.png](media://52595eac-dc66-4482-99bf-28c41ff3a7a9)

- In the Subnet settings panel that is revealed, input a **Subnet name.**

![image-20240409-210638.png](media://1292349a-73e4-4c9e-9e9f-47a98df1f1f5)

- Select an **Availability Zone** via the Availability Zone dropdown menu.

![image-20240409-211108.png](media://3463f038-8fba-42c3-9392-a3807330d9f9)

- Input an IPv4 CIDR via the **IPv4 CIDR block**. *Note pick a range that allows remaining IPs in the VPC as a second Subnet will be created later in this guide.*

![image-20240409-211137.png](media://9ac688c0-1dc9-4cac-8b96-bbd4f976dd23)

- Click **Create subnet** to confirm the creation of the subnet.

![image-20240409-211220.png](media://2b7a2158-75de-4f38-8d9c-a2338bd679cf)