What is a Network Access Rule?

Answer:

A Network Access Rule is a template for creating 'port forwarding' rules.  NAR's are contained within Network Access Groups (NAG's), which are applied to a Cloud Server's Cloud IP address.

Each NAR contains the following properties:

Scheme: A friendly name for the NAR

Protocol: TCP or UDP traffic type

From Port: The public IP port number

To Port: The private IP port number