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Pluggable Authentication
PAM - Pluggable Authentication Modules
- Provide a dynamic means of modifying the following aspects of user oriented services:
- account - things which verify what a user can or cannot do and when.
- auth(entication) - is the user who they say they are. Create/destroy credentials.
- password - mechanisms that update or alter ways that users authenticate themselves (usually a password).
- session - do things before or after access is granted to a service or resource.