# Server Setup ``` sudo apt install dnsmasq ``` Edit `/etc/dnsmasq.conf`: ``` no-resolv # for offline / isolated networks only address=/.apsystemsema.com/192.168.69.100 address=/.apsema.com/192.168.69.100 listen-address=192.168.69.100 ``` Replace `192.168.69.100` with the server's IP address. Edit router's DHCP DNS settings to use 192.168.69.100 as the name server.