Synology DiskStation as DHCP and DNS Server at Home | robotlime
Using Synology as a Reverse Proxy
How do I configure my devices to use Pi-hole as their DNS server? - FAQs - Pi-hole Userspace
How do I set up a DNS server on my Synology NAS? - Synology Knowledge Center
networking - Unable to connect to Synology NAS using my Synology domain over HTTPS on internal network, need to configure DNS Server on NAS? - Super User