July 8, 2001 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)