xbox 360 issue PLEASE HELP

Hey there RachaelPalmer,

Thanks for reaching out to the Forums for advice on how to hopefully get your console to stop giving you this error. I can definitely see how this could be pretty distressing. In order to better support you, could you please provide the exact error you're
experiencing?

Please and thank you.

I personally use DMZ, My router needs to be reset every once and awhile but using the DMZ I found is the best, I was having the same issues at you with my BELKIN before and I changed to DMZ and no problems now

DMZ is a one to one relation to a single IP address. DMZ as being 192.168.1.2 for example (may vary depending on how much you have connected), you set the xbox to that Ip address, bypassing most router functions (for ports). Nothing else will be affected.
but you will notice a difference

I hope this helps you.

MTU Size is set to 1500 by default.

Hi, thanks for the advice. I tried setting my xbox up for DMZ and removed port forwarding, unfortunately it did not work. I am completely at a loss for what to do.

Your router is actually pretty good. The problems you're seeing is rare with that, and you've done a lot. Have you tried removing port forwarding and doing DMZ instead? Make sure you power cycle after you do that and that the Xbox is off while you do it.