Netgear Nighthawk M1 cant port forward at all.

> Can[']t port forward on the mobile router [...]

   Visit http://netgear.com/support , put in your model number, and look
for Documentation.  Get the User Manual.  Read.  Look for "Port
Forwarding".

   When I did that for a "MR1100 - Nighthawk M1 Mobile Router", I found
a section which describes how to do it.  Is that User Manual wrong, or
is your model/firmware different, or what?

   "Can[']t" is not a useful problem description.  It does not
say what you did.  It does not say what happened when you did it.  As
usual, showing actual actions (commands) with their actual results
(error messages, LED indicators, ...) can be more helpful than vague
descriptions or interpretations.

   Note: "cant" is a word, different from "can't".