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Man Pages
PAM_SECURETTY(8) FreeBSD System Manager's Manual PAM_SECURETTY(8)

pam_securetty —
SecureTTY PAM module

[service-name] module-type control-flag pam_securetty [options]

The SecureTTY service module for PAM, pam_securetty provides functionality for only one PAM category: account management. In terms of the module-type parameter, this is the “account” feature. It also provides null functions for authentication and session management.

The SecureTTY account management component (pam_sm_acct_mgmt()), returns failure if the user is attempting to authenticate as superuser, and the process is attached to an insecure TTY. In all other cases, the module returns success.

A TTY is considered secure if it is listed in /etc/ttys and has the TTY_SECURE flag set.

The following options may be passed to the authentication module:

syslog(3) debugging information at LOG_DEBUG level.
suppress warning messages to the user. These messages include reasons why the user's authentication attempt was declined.

getttynam(3), syslog(3), pam.conf(5), ttys(5), pam(8)
July 8, 2001 FreeBSD 13.1-RELEASE
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