PAM_NOLOGIN(8)

NAME
pam_nologin - NoLogin PAM module

SYNOPSIS
[service-name] module-type control-flag pam_nologin [options]

DESCRIPTION
The NoLogin authentication service module for PAM provides functionality for only one PAM category: authentication. In terms of the module-type parameter, this is the “auth” 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:

debug
    syslog(3) debugging information at LOG_DEBUG level.

no_warn
    suppress warning messages to the user. These messages include reasons why the user's authentication attempt was declined.

SEE ALSO
syslog(3), login.conf(5), pam.conf(5), nologin(8), pam(8)