Section: Linux\-PAM Manual (8)
pam_timestamp - Authenticate using cached successful authentication attempts
pam_timestamp.so [timestampdir=directory] [timestamp_timeout=number] [verbose] [debug]
In a nutshell,
caches successful authentication attempts, and allows you to use a recent successful attempt as the basis for authentication. This is similar mechanism which is used in
When an application opens a session using
pam_timestamp, a timestamp file is created in the
directory for the user. When an application attempts to authenticate the user, a
will treat a sufficiently recent timestamp file as grounds for succeeding.
Specify an alternate directory where
creates timestamp files.
How long should
treat timestamp as valid after their last modification date (in seconds). Default is 300 seconds.
Attempt to inform the user when access is granted.
Turns on debugging messages sent to
MODULE TYPES PROVIDED
module types are provided.
The module was not able to retrieve the user name or no valid timestamp file was found.
Everything was successful.
Timestamp file could not be created or updated.
Users can get confused when they are not always asked for passwords when running a given program. Some users reflexively begin typing information before noticing that it is not being asked for.
auth sufficient pam_timestamp.so verbose
auth required pam_unix.so
session required pam_unix.so
session optional pam_timestamp.so
timestamp files and directories
pam_timestamp was written by Nalin Dahyabhai.