The Windows 98 RAS client and server support pass-through security, which enables the dial-in server or another server on the network to handle remote user authentication. If you use a Windows 98 RAS server, the server can use share-level security to authenticate dial-in access. When a user dials into the server, the user provides a password, which you have assigned in the Dial-Up Networking server's configuration. If the passwords match, the dial-in user is connected and can begin to use the resources on the server or on the network to which the server is connected, provided the user has the necessary passwords for the resources.
The Windows 98 Dial-Up Networking server also can use pass-through, user-level security to authenticate access to the server and to the LAN. When the server is configured for user-level security, a Windows NT server authenticates user logon, just as it does for LAN clients who attempt to access user-level, security-protected resources on the LAN. The user dials into the Windows 98 Dial-Up Networking server, which then transmits the authentication request to the Windows NT-based security server on the LAN. If the server responds with security authentication, the dial-in user is connected and can begin to use the Dial-Up Networking server's resources and other shared resources on the LAN for which the user has passwords or access permission. If the security server denies authentication, the dial-in connection is denied and the connection fails.
The security that other types of dial-up servers provide depends on the operating system and dial-up server software.