The NoLogin authentication service module for PAM provides functionality for only one PAM category: authentication. In terms of the
” feature. It also provides a null function for session management.
NoLogin Authentication Module
The NoLogin authentication component (pam_sm_authenticate
()), always returns success for the superuser, and returns success for all other users if the file /etc/nologin
does not exist. If /etc/nologin
does exist, then its contents are echoed to non-superusers before failure is returned. If a "nologin" capability is specified in login.conf(5)
, then the file thus specified is used instead. This usually defaults to /etc/nologin
The following options may be passed to the authentication module:
syslog(3) debugging information at LOG_DEBUG level.
suppress warning messages to the user. These messages include reasons why the user's authentication attempt was declined.