How to change the DNS server IP address

FortiGate

FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.

Article Id 337833

Description

This article describes how to change the DNS server IP address.

Scope

All FortiGate.

Solution

By default, the FortiGate will be added with the default FortiGuard server IP address on the DNS settings.

FortiGuard DNS servers are used by FortiGate devices to resolve domain names into IP addresses. By default, FortiGate devices use the following FortiGuard DNS servers:

Primary DNS server: 208.91.112.53 - Secondary DNS server: 208.91.112.52.

Primary DNS server: 96.45.45.45 -Secondary DNS server: 96.45.46.46.

It is also possible to customize the DNS settings on FortiGate devices to use different DNS servers if needed.

Navigate to Network -> DNS -> DNS servers -> Specify.

Mention the primary DNS and secondary DNS.

Note: Not all public DNS servers support TLS protocol (enabled by default). If necessary, switch to DNS protocol. By default is required to change the DNS server over CLI:

From the CLI:

config system dns

set primary 8.8.8.8

set secondary 4.4.2.2

set protocol cleartext

end

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Technical Tip: How to change the DNS server IP address

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