How to configure direct http access to EC2 instance?

Question

This is a very basic Amazon EC2 question, but I\'m stumped so here goes.

I want to launch an Amazon EC2 instance and allow access to HTTP on ports 80 and 8888 from a

Answer 1

Apparently I was "binding to localhost" whereas I needed to bind to 0.0.0.0 to respond to port 80 for the all incoming TCP interfaces (?). This is a subtlety of TCP/IP that I don't fully understand yet, but it fixed the problem.