Simple Dynamic DNS
Most routers for home internet allow you to forward ports of your publicly visible IP address to internal IPs of your home network. In order to make that work, you first need to know your publicly visible IP. Most of the time, the router will fetch its IP from the ISP via DHCP, and the address is not constant. This is where countless dynamic IP services jump in, with the disadvantage that the names that they offer are mostly plain ugly (my-name.dynamic-ip-xyz.example.com) and most of the time they will make you pay for everything but the most basic services. If, however, you are the admin of the nameserver of your domain you can easily set up your own solution.
