That's not dangerous at all.
Before, I had a linksys router WRT54GXv2And had to port forward my ports to 65535 to 65535I know, it seemed really dangerous, but, it worked. And it was the only thing that worked.
ok if i do this do i need delete the other 2 post forwards or do i just keep it
um how do i enable the UDnP?
Keep them.