DescriptionThis article how to use DDNS service and how to enable FortiGuard DDN Servers when the following error message is appearing from GUI:
Solution1) If there is PPPoE or DHCP connection on WAN port, make sure overriding internal DNS is disabled:- From GUI, go to Network -> Interfaces, edit WAN and unselect Override internal DNS.- From CLI/SSH:
# config system interface edit wan1 set dns-server-override disable end
2) Manually configure DDNS server via CLI/SSH:
# config system fortiguard set ddns-server-ip 18.104.22.168 end
3) Change the protocol to UDP and disable FortiGuard anycast (For version 6.4.2).
# config system fortiguard set fortiguard-anycast disable set protocol udp end
4) If an issue is found in FortiOS 7.0 with FortiDDNS please make the changes below:
# config system fortiguard set fortiguard-anycast enable set ddns-server-ip 22.214.171.124 end
This is due to handshake failure for TLSv1.3 and will be resolved if above changes are done.
Technical Tip: How to update IP address with FortiGuard DDNS service and upstream router
Troubleshooting Tip: FortiGuard DDNS IP update fails