This panel lists all the parameters that can be configured for the gateway. For each parameters, you can see the name of the parameter, its current value and whether or not it is currently configured.

Having your mouse over one of the parameter line will display the description of this parameter.

Checking the "Configure?" check-box for a parameter will activate this parameter in the gateway. If you do so, make sure to enter a valid value or it could prevent the gateway from starting properly. By unchecking this check-box, you deactivate this parameter from the gateway.