A CCESS GATEWAYThe Subscriber Interface 279Configuring the Subscriber Management ModelsModel What You Need To DoFree access Disable the AAA services.MAC address Enable the AAA services and add a subscriber profile to thedatabase for each MAC address you want to enable.User Name and Password Enable the AAA services and Usernames. Add a subscriberprofile to the database for each user name and password youwant to enable. You will need to request a unique user nameand password when they pay for the service.The user name and password are optional (the MAC addresswill be substituted), but in this event the service is nottransferable between computers.Credit card Enable the AAA services. You have the choice of enabling theAccess Gateway’s internal authorization module or using anexternal credit card authorization server.Internal Authorization EnabledEnter the credit card server’s URL and IP address, then enterthe merchant ID you obtain from Authorize.Net.If you have NOT enabled Internal AuthorizationSet up your own external authorization server with yourmerchant ID. Enter the secret key (the default is bigbrowndog).Enter the external authorization server’s URL, then enter its IPaddress as a pass-through IP address.