> That is not the Actual make of the Router I had to put something as it
> doesn't list my router. I have a D6400 [...]
It's more likely to be in the list if you select a more appropriate
forum, like, say:
https://community.netgear.com/t5/x/bd-p/home-dsl-modems-routers
A firmware version might be interesting, too.
> [...] It claims they are being used or are already in use [...]
What was the (whole) actual error message? Copy+paste is your
friend. Did you check those things? Based on no actual information,
I'd guess that you have UPnP enabled, and the router is already trying
to do deal automatically with your (unspecified) software/gizmo.
> [...] but I know for a fact they are not. [...]
You're far ahead of me. I know nothing about what you might have
asked your router to do (like, say, UPnP).
> [...] Trying to forward 27000 - 27030. [...]
To what? Why? If UPnP is enabled, then you might try disabling it,
restarting the router, and taking another run at manually configuring
port forwarding.
