PAM_SECURETTY
Section: Linux-PAM Manual (8)
Updated: 06/04/2011
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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 TYPES PROVIDED
Only the
auth
module type is provided.
 
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_USER_UNKNOWN
- 
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(5),
pam(7)
 
AUTHOR
pam_securetty was written by Elliot Lee <sopwith@cuc.edu>.
 Index
- NAME
 - 
 - SYNOPSIS
 - 
 - DESCRIPTION
 - 
 - OPTIONS
 - 
 - MODULE TYPES PROVIDED
 - 
 - RETURN VALUES
 - 
 - EXAMPLES
 - 
 - SEE ALSO
 - 
 - AUTHOR
 - 
 
      
      
      
      
   
      
      
         
            
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