I've been trying to set up port forwarding on my WHR-HP-G54 to achieve open NAT for better Xbox Live support. When I try to save the settings I get the following:
ERROR: system
CONTENTS: Can not write to file
I've tried the usual stuff, i.e. rebooting the router, but this error persists. I'm using the latest firmware (WHR-HP-G54 Ver.1.40 (1.0.37-1.08-1.04). Any idea how to fix this?
Have you tried opening any other ports? See if the problem is only with that specific port, or that function on the router. Also you can check to make sure it's going through: canyouseeme.org will let you know if it is open, if you can't get any ports to go through and it seems to be the function on the router. try a power cycle if you haven't already, a little more powerful than a reboot, which is unplugging the router as well as the modem its attached to.
davo is correct, but this could potentially open up security problems.
Try resetting the router to defaults with the reset button, and try again.
This did the trick!
I also tried davo's solution of setting my Xbox's IP to the DMZ. That was an extremely easy way to accomplish what I wanted to do, but I'm not sure about how risky it is. Any thoughts?
Thanks for your help everyone!