I have a home network that I routinely have need to access from remote locations. Up until now, I’ve just made do, by waiting to handle the tasks when I’m at home, or by physically going home in order to access the network.
The reason that accessing your home network from anywhere outside the home is problematic is because you most likely don’t have a static IP address from your ISP. That means that your IP address of your modem changes frequently, so if you want to even begin to access your home network from a distance, you need to know the address to reach it. When it changes all the time, that can be a problem. That’s where dynamic DNS comes in.
Dynamic DNS is a service that allows you to channel your ever-changing IP address to a static domain name. The idea is that even though your IP address changes all the time, you can enter a given domain name and that will point you to the correct IP address. When your IP address changes, you update the DNS for the domain name and it still gets you to your home network.