Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I just launched an instance of Windows server 2008 on Amazon EC2.

This instance is in a security group allowing RDP and HTTP. Here are the allowed connections on this instance

"Connection Method" Protocol "From Port" "To Port" "Source (IP or group)" 
RDP                 tcp      3389         3389    
HTTP                tcp      80           80

I installed tomcat on this server on port 80. I can connect using rdp to the machine, and, using its local Internet Explorer, I can view the welcome page of tomcat on http://localhost

Now, I would like to see this from outside the amazon network, but when I connect to the public DNS of my instance, something looking like :


I get no response. Any idea on how to troubleshoot this ?

share|improve this question
up vote 1 down vote accepted

Have you checked the Windows firewall on the instance?

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.