Port forwarding help

Hello!

So i recently was able to setup a dedicated Condo, which was honestly stupidly easy.
Although, after the most recent power outage i guess my router got messed up/or broke which means i have to set everything up again as i had to get a new router.

This time though, i’m quite confused… as an internal host is required… is that just my own IP address?
Because like, there’s nothing else in the official guide of setting up a dedicated condo.

Also, as stated in the guide here Hosting Dedicated Windows - Tower Unite Guides i need to forward the Steam ports ‘‘27015-27050’’ and Unreal ports ‘‘7777-7778’’, but does it matter if i put them in the External/Internal port text box?
And like, are those 2 ports for Steam and 2 ports for Unreal?

I’m probably just making it waaaay to hard for myself and mixing everything up, so uhm… help is appreciated!
edit: thought i’d add a picture to hopefully make it easier for everyone to potentially help, this is inside my routers port forwarding settings.
I know how to change protocol and everything, and i also know where to put the ports but at the same time not.