I've checked my firewall on the server and the ports are open. What else can I check?
You should check your security groups in the Amazon EC2 portal. By default, they block the cPanel, WHM, or Webmail ports.
View this documentation from Amazon to find out how to manage the security groups in Amazon EC2:
You'll need to open the following ports:
- cPanel: 2082 and 2083
- WHM: 2086 and 2087
- Webmail: 2095 and 2096
If you're having trouble with other services, you can review which ports to open in this documentation article: