PAM_SECURETTY

Section: Linux\-PAM Manual (8)
Updated: 06/04/2006
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NAME

pam_securetty - Limit root login to special devices  

SYNOPSIS

pam_securetty.so [debug]
 

DESCRIPTION

pam_securetty is a PAM module that allows root logins only if the user is logging in on a "secure" tty, as defined by the listing in /etc/securetty. pam_securetty also checks to make sure that /etc/securetty is a plain file and not world writable.

This module has no effect on non-root users and requires that the application fills in the PAM_TTY item correctly.

For canonical usage, should be listed as a required authentication method before any sufficient authentication methods.  

OPTIONS

debug
Print debug information.
 

MODULE SERVICES PROVIDED

Only the auth service is supported.  

RETURN VALUES

PAM_SUCCESS
The user is allowed to continue authentication. Either the user is not root, or the root user is trying to log in on an acceptable device.
PAM_AUTH_ERR
Authentication is rejected. Either root is attempting to log in via an unacceptable device, or the /etc/securetty file is world writable or not a normal file.
PAM_INCOMPLETE
An application error occurred. pam_securetty was not able to get information it required from the application that called it.
PAM_SERVICE_ERR
An error occurred while the module was determining the user's name or tty, or the module could not open /etc/securetty.
PAM_IGNORE
The module could not find the user name in the /etc/passwd file to verify whether the user had a UID of 0. Therefore, the results of running this module are ignored.
 

EXAMPLES

auth  required  pam_securetty.so
auth  required  pam_unix.so
      

 

SEE ALSO

securetty(5), pam.conf(5), pam.d(8), pam(8)  

AUTHOR

pam_securetty was written by Elliot Lee <sopwith@cuc.edu>.


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
MODULE SERVICES PROVIDED
RETURN VALUES
EXAMPLES
SEE ALSO
AUTHOR

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