pam_securetty (8) - Linux Manuals
pam_securetty: Limit root login to special devices
pam_securetty - Limit root login to special devices
- pam_securetty.so [debug]
This module has no effect on non-root users and requires that the application fills in the PAM_TTY item correctly.
- Print debug information.
- Do not automatically allow root logins on the kernel console device, as specified on the kernel command line or by the sys file, if it is not also specified in the securetty file.
MODULE TYPES PROVIDED
- 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.
- Authentication is rejected. Either root is attempting to log in via an unacceptable device, or the securetty file is world writable or not a normal file.
- Memory buffer error.
- The conversation method supplied by the application failed to obtain the username.
- The conversation method supplied by the application returned PAM_CONV_AGAIN.
- An error occurred while the module was determining the user's name or tty, or the module could not open the securetty file.
- 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.
auth required pam_securetty.so auth required pam_unix.so
pam_securetty was written by Elliot Lee <sopwith [at] cuc.edu>.