Maskkkk,
You will be required to setup a DNS server either on your local network or on an hosting provider. If you plan to host your own DNS server then don't worry too much about it as we already have you covered!
If you visit the Protocols > DNS Section you'll find a nice subsection which covers setting up DNS-BIND for Linux. There are examples there to help guide you through the process and of course, if you get stuck, we are always here to help.
Give it a go - you have nothing to loose and plenty to gain!
Cheers mate,
