Allied Telesis AT-WA7501 - Manual (Page 216)

Chapter 7: Configuring the Embedded Authentication Server (EAS)
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2. From the main menu, click Security > Embedded Authentication
Server > Database. The Database screen appears.
3. In the Type field, choose the type of client you are entering in the
database. For help, see the next table.
4. Click Submit Changes to save your changes.
5. Enter the appropriate user name and password, if applicable. User
names and passwords can be from 1 to 32 characters. For help, see
the next table.
6. Click Submit Changes to save your changes.
7. Repeat Steps 3 through 6 for each client.