This can be done by logging into the NCM application on the server itself.
Go To : File > Settings > Global Macro Settings
The specific section here you want is transfer protocols but it's all relevant.
As of version 7.1 of NCM, this is now located within the Orion web console under :
Settings > NCM Settings > Global Device Defaults
Message was edited by: Edward Corcoran December 20th , 2012