Description
This article describes how to configure DDNS update override in FortiGate DHCP server.
Solution
FortiGate can update a record in local DNS server enabling dynamic updates with DDNS update override option in FortiGate DHCP server.
Note:
Dynamic update for PTR records is not supported with this option.
# config system dhcp server
edit 0
set ddns-update enable
set ddns-update_override enable
set ddns-server-ip 10.165.0.84 # ddns_server_ip
set domain fortitest.com # ddns_zone (only if running FOS 6.4+)
set ddns-zone fortitest.com # ddns_zone
next
end
In this example, FortiGate has 10.165.0.83 as DHCP server.
Windows 2016 server has 10.165.0.84 as DDNS server.
A test client machine has 10.165.0.57 and will be updated with DDNS update from DHCP server.
Here is a record for the client machine (10.165.0.57) in Windows 2016 DNS server before DDNS update received.
When DDNS update is accepted (in wireshark), a record for the client is updated properly:
Related document:
