For ease of access, you use your domain credentials (username and password) to log into the user portal. The Smoothwall verifies this against those received from the configured directory connection (Services > Authentication > Directories) hence why you only need to specify who is granted access.
If however, you are using a directory connection where the password is not "Smoothwall-verified", such as RADIUS Accounting, Google, or the IDex Directory, you can either:
- Use a username and password combination from another configured directory connection that does support password verification (Active Directory, RADIUS Directory, and so on)
- Create a Local Users directory connection (see Configuring a Local Users Directory) containing the usernames and passwords for your portal users, then add the same usernames here