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pam_nologin

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pam_nologin: Prevent non-root users from login

NAME

pam_nologin - Prevent non-root users from login

SYNOPSIS

pam_nologin.so [file=/path/nologin] [successok]

DESCRIPTION

pam_nologin is a PAM module that prevents users from logging into the system when /var/run/nologin or /etc/nologinexists. The contents of the file are displayed to the user. The pam_nologin module has no effect on the root user's ability to log in.

OPTIONS

file=/path/nologin Use this file instead the default /var/run/nologin or /etc/nologin. successok Return PAM_SUCCESS if no file exists, the default is PAM_IGNORE.
MODULE TYPES PROVIDED
The auth and acct module types are provided.
RETURN VALUES
PAM_AUTH_ERR The user is not root and /etc/nologin exists, so the user is not permitted to log in. PAM_BUF_ERR Memory buffer error. PAM_IGNORE This is the default return value. PAM_SUCCESS Success: either the user is root or the nologin file does not exist. PAM_USER_UNKNOWN User not known to the underlying authentication module.

EXAMPLES

The suggested usage for /etc/pam.d/login is: auth required pam_nologin.so

NOTES

In order to make this module effective, all login methods should be secured by it. It should be used as a required method listed before any sufficient methods in order to get standard Unix nologin semantics. Note, the use of successok module argument causes the module to return PAM_SUCCESS and as such would break such a configuration - failing sufficient modules would lead to a successful login because the nologin module succeeded.

SEE ALSO

nologin(5), pam.conf(5), pam.d(5), pam(7)

AUTHOR

pam_nologin was written by Michael K. Johnson <johnsonm@redhat.com>. PAM_NOLOGIN(8)
 
 
 

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