> ## Documentation Index
> Fetch the complete documentation index at: https://docs.aviatrix.com/llms.txt
> Use this file to discover all available pages before exploring further.

# DNS Server Configurations for the Aviatrix Controller

> This page provides guidance on configuring the DNS server for the Aviatrix Controller. The Aviatrix Controller requires DNS resolution to communicate with various services, including: Licensing, CoPilot services, telemetry services, Public APIs, and optional integrations.

This page provides guidance on configuring the DNS server for the Aviatrix
Controller. The Aviatrix Controller requires DNS resolution to communicate with
various services, including: Licensing, CoPilot services, telemetry services,
Public APIs, and optional integrations.

By default, the Controller uses Google Public DNS servers. This ensures that DNS
resolution is reliable and independent of customer-specific network
configurations. However, in environments with private DNS requirements or
restricted outbound access, using the DNS server provided by the VPC/VNet DHCP
option may be more appropriate.

## Configure DNS server for the Controller

To configure the DNS server for the Controller:

1. Go to **Settings > Configuration > General** in the Aviatrix CoPilot user
   interface.
2. Locate the **DNS Server for Controller** tile.

## Configuration Options

### Aviatrix Default DNS Server (Default)

The Aviatrix Default DNS server uses Google Public DNS servers.

This option is suitable for environments with unrestricted internet access and
ensures the Controller has consistent and reliable DNS resolution regardless of
customer infrastructure.

### Cloud VPC/VNet DNS Server

This option uses DNS servers configured through the VPC/VNet DHCP options. By
enabling this option, Aviatrix Controller can leverage the DNS servers provided
by the Virtual Private Cloud (VPC) or Virtual Network (VNet), ensuring that DNS
queries are resolved within the cloud infrastructure. This setup is particularly
beneficial for environments where Controller need to interact with cloud-based
resources and services.

Recommended for environments that require:

* Resolution of private domain names.
* DNS routing through internal enterprise infrastructure
* Compliance with organizational policies that restrict access to public DNS
  servers

## Related Topics

* <a href={"/docs/enterprise/" + "10.1" + "/guides/platform-administration/dns-server-general"}>DNS Server Configuration for Aviatrix Services</a>
* <a href={"/docs/enterprise/" + "10.1" + "/reference/controlplane/time-sync-policy"}>Aviatrix Service Time Synchronization Policy</a>