That dual Router Modem box with the password on the side that your ISP gives You when You sign up for their service is the worst on security. You may want to consider a business class router like the Pepwave Soho. I'd recommend acquiring yours at 3G Store because they have amazing support staff You can call. Here's a good website that can tell You everything You'd ever want to know about Routers by Michael Horowitz.
First time I got to go on an international snorkel/dive trip was to Belize in 1981. I was fifteen and we drove down in a Datsun Pickup full of dive gear, and a portable compressor, back then it was hard to find a place to fill your scuba tanks, years later I decided it was time to take a break from my Job and see Belize through a greybeards eyes, to say that San Pedro Belize has changed is an understatement, they even have a hyperbaric Facility. I will post here about snorkeling,traveling, and stuff that happens along the way. Thank You for visiting! Burnie