When you are working on two different machines they will need to be able to communicate between each other. To do this they will need a port opening.
-
Identify the port that you need to open. For example in the chat server lab you need to open port
8030. -
Select the instance from the list of instances in your account.
-
Go to the security tab.
- Select the security group, it should load a new page.
-
Click on "Edit inbound rules"
-
Select "Add rule".
-
Set the port range to be the port that you need to open, in the example above it is
8030. -
Set the source to be
anywhere. -
Click "Save rules".