All the information I can find on opening/closing ports on instances relates to the "Manage Security Group Rules" tab on the DreamCompute admin web interface. But that seems to only relate to how an instance is set up when it is first created.
I want to manage a port or two on an existing instance (for testing self-serving web scripts).
Which leads to two related questions:
1)What settings do the "Manage Security Group Rules" settings impose on an instance? What tool is being used to control access to the working server?
2)What is the recommended way to alter the port access settings on a server instance after it has been created.
I'm not asking for a walk-through tutorial. Just RTFM me or point me in the right direction.