Focus

Cloud NGFW for AWS

Private DNS Server

Table of Contents

Learn how to direct DNS queries from a private DNS server to Cloud NGFW.

When using a private or on-premises DNS server, complete the following procedure to direct DNS traffic to your Cloud NGFW endpoints.

Log in to the AWS console.
Select your VPC and then DHCP option sets.
You can create a new DHCP option set and add your DNS server IP address. In this example, 172.18.10.1 is the private DNS server address. If you have an existing DHCP option set with your DNS server configured, view the details and take note of the DNS server IP address.
Select VPC and choose the VPC to secure.
From the Actions drop-down, select Edit VPC settings.
Under DHCP settings, choose the DHCP option set with your private DNS server configured from the DHCP option set drop-down.
Click Save changes.

The selected VPC now directs all DNS queries to the configured DNS server.
Edit your subnet route table.
1. Select VPCRoute tables.
2. Select the route table for the subnet you want to secure.
3. Add a route and set the destination to the IP address of your DNS server.
4. Click Save changes.
  
  Any DNS traffic from the protected subnet is routed through the Cloud NGFW endpoint and on to the Cloud NGFW for inspection and enforcement.