title: Tomcat running, port 80 connection refused error
body: <p>At first, everything was fine, until today. My site (running on Apache Tomcat) gave a No Data Received error page in Chrome. I panicked, and tried port 8080. It worked. Port 80 was failing. So I tried doing SSH to my EC2 Instance, and restarting tomcat. The restart worked, but my site still failed. I tried using <code>sudo curl localhost:80</code> on my instance (Ubuntu Linux AMI), and I got this error: <code>curl: (7) Failed connect to localhost:80; Connection refused</code>. What does it mean, and more importantly, how can I fix this issue?</p>