How to access/ping a server located on AWS?

Question

With what address should a server located on AWS be accessed?

I\'ve created an AWS instance and installed a web server on it. However the server is not reachable via any

Answer 1

UPDATE for September 2014: After a while of not being able to apt-get without freezing, I tried to ping www.google.com. To my surprise I couldn't ping either. I followed the suggestion above by creating a new ICMP rule with an Echo Request for Inbound. This didn't work for me either. After much trying I created a new rule for Outbound with Echo Request. Now it works. Maybe AWS added this recently? Anyway, hope this helps somebody out there. Not being able to do something as simple as pinging could drive a person nuts.

edit: now my apt-get works too!