I searched and could not find that this had been asked. if it has, I apologise.

we have a RB450 that is connected to our cable modem we have it set up as such

(note the "xx" are real numbers, but for the sake of privacy I am not including them)
ip addy xx.xx.150.15
gateway 0.0.0.0/0 xx.xx.150.1

I can ping the router from the internet. but I can not reach the router login page or use winbox. I cant see why

any suggestions?