I need to connect to my computer remotely(all ports), but that ip changes. I have everthing figured out on how the comp woukd know my current ip, but i don't know how to add an ip on all ports and remove that ip (dynamic ip so I'll remove one and add a new one). Don't i need to save the changes during commands?

For the people answering, i already have a no-ip account, and the computer checks that to see when it changes. All i have to do now is add the new ip and remove the old one. Also i have my router allow only the ports i need.Thanks for trying though.