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The Line Printer Daemon print protocol, often used in UNIX environments, is a non-authenticated system. This is common in Apple Mac labs, where enabling multi-user authentication is complex and can often prevent selected applications from running correctly.

For example, username: student, password: student. Some student labs are set up so everyone logs in using a generic username and password. Some real life examples include: The Student Lab Where and when should popup authentication be used? The print job is attributed to the authenticated user.ĭepending on configuration, the server might remember the association between the IP address and the authenticated user for a period of time. If the credentials are correct, the user is considered authenticated at that client. The user is prompted to enter their username and password, which are then verified against PaperCut NG/MF’s configured directory source. PaperCut NG/MF uses the job’s source IP address to determine the PaperCut NG/MF popup client it should contact for authentication. The print job arrives in the print queue and because of the unauthenticated protocol, the username cannot be trusted. The user initiates a print job to a server-hosted, PaperCut NG/MF-managed, queue (printer) via unauthenticated print protocol. Popup authentication matches the source IP address of the print job with the user confirmed to be operating from the popup client IP address. Common examples include:Īll users log in with a common generic username and password meaning that it’s not possible to distinguish between users.Ī print queue that does not enforce authentication.įor a detailed explanation of print authentication, see Print authentication. However, in some network environments, relying on network level authentication is either not possible, or not reliable. The print queues also use this authentication and PaperCut NG/MF can trust the supplied identity.

For example, in normal operation, a user logs into a workstation using a domain/network level authentication method such as a username and password. PaperCut NG/MF normally relies on the underlying operating system and the associated print queues to perform authentication.