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6.25. pam_securetty - limit root login to special devices
6.25. pam_securetty - limit root login to special devices
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6.25. pam_securetty - limit root login to special devices

pam_securetty.so [ debug ]

6.25.1. 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.

6.25.2. OPTIONS

debug

Print debug information.

6.25.3. MODULE SERVICES PROVIDED

Only the auth service is supported.

6.25.4. 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.

6.25.5. EXAMPLES

auth  required  pam_securetty.so
auth  required  pam_unix.so

6.25.6. AUTHOR

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

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6.24. pam_rootok - gain only root access Home 6.26. pam_selinux - set the default security context

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