Amazon EC2 Firewall Management

Unblock an in-bound port

0. From the EC2 Management homepage, navigate to the instance you want to modify, and open its instance summary.

1. Under the Security tab, click on the security group with the firewall you want to edit.

2. Under the Inbound Rules tab on the Security Group Details page, click Edit Inbound Rules, and add the new port or protocol using the drop-down menus, then save.