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PAM_SECURETTY(8)	 System Administrator's Manual	      PAM_SECURETTY(8)

NAME
       pam_securetty  -	 Limits	 root  to  logging  in	on  devices  listed in
       /etc/securetty

SYNOPSIS
       /usr/security/pam_securetty

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/se‐
       curetty.	 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.

OPTIONS
       pam_securetty has no options.

RETURN CODES
       pam_securetty has the following return codes:

       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  accept‐
	      able 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  re‐
	      sults of running this module are ignored.

HISTORY
       pam_securetty was written by Elliot Lee.

FILES
	/etc/securetty

SEE ALSO
       pam.conf(8), pam.d(8), pam(8), securetty(8).

AUTHOR
       Emily Ratliff.

Linux 2.4			  2003-02-21		      PAM_SECURETTY(8)

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