PAM_SECURETTY(8) System Administrator's Manual PAM_SECURETTY(8)NAMEpam_securetty - Limits root to logging in on devices listed in
/etc/securetty
SYNOPSIS
/usr/security/pam_securetty
DESCRIPTIONpam_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.
OPTIONSpam_securetty has no options.
RETURN CODESpam_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.
HISTORYpam_securetty was written by Elliot Lee.
FILES
/etc/securetty
SEE ALSOpam.conf(8), pam.d(8), pam(8), securetty(8).
AUTHOR
Emily Ratliff.
Linux 2.4 2003-02-21 PAM_SECURETTY(8)