Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

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 have Tomcat hosting a web app on port 8080 within an EC2 micro instance. From my home network I can get to the web page no problem, but from any other network 3G cell, or my co-worker's home network the website "stops responding" and never connects. I've checked the security settings for the instance multiple times and have set port 8080 for access from I consistently connect from my home network without issues. Is there an EC2 setting that only allows incoming traffic from one ip? Any ideas on why I can only connect from my home ip? Thanks

share|improve this question
  1. Are you using the public DNS name for your EC2 instance?
  2. Try accessing your IP/port from an external tool such as:
  3. Run netstat -a or tcpdump to see if your request actually arrives on the server or if there is some application issue preventing a response
share|improve this answer

You might want to think about using Amazon Elastic Beanstalk Tomcat instead. Each instance of Beanstalk is the same price as a node of Linux or Windows. Also, you can compile and publish directly to the Beanstalk instance from Eclipse. All of this takes a little bit of money of course, probably as much as 12 cents per hour, depending on how you deploy.

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.