Domain Name Suffix You can specify a domain name suffix in a DHCP address pool on the FortiGate DHCP server . With this suffix assigned, the client only needs to input part of a domain name, and the system adds the domain name suffix for name resolution. For example a client can type in https://fortimanager in their web browser to access your fortimanager instance, instead of the FQDN of https://fortimanager.domain.local In FortiOS (current as of December 2022) this is configured via the CLI. Configuration config system dhcp server edit <#> set domain <domain suffix> In a full context this would be config system dhcp server edit 1 set domain "lab.example.com" set default-gateway 192.168.1.1 set netmask 255.255.255.0 set interface "port1" config ip-range edit 1 set start-ip 192.168.1.100 set end-ip 192.168.1.200 next