1.\" Copyright (c) 2001 Mark R V Murray 2.\" All rights reserved. 3.\" Copyright (c) 2002 Networks Associates Technology, Inc. 4.\" All rights reserved. 5.\" 6.\" Portions of this software were developed for the FreeBSD Project by 7.\" ThinkSec AS and NAI Labs, the Security Research Division of Network 8.\" Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 9.\" ("CBOSS"), as part of the DARPA CHATS research program. 10.\" 11.\" Redistribution and use in source and binary forms, with or without 12.\" modification, are permitted provided that the following conditions 13.\" are met: 14.\" 1. Redistributions of source code must retain the above copyright 15.\" notice, this list of conditions and the following disclaimer. 16.\" 2. Redistributions in binary form must reproduce the above copyright 17.\" notice, this list of conditions and the following disclaimer in the 18.\" documentation and/or other materials provided with the distribution. 19.\" 3. The name of the author may not be used to endorse or promote 20.\" products derived from this software without specific prior written 21.\" permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" $FreeBSD: head/lib/libpam/modules/pam_securetty/pam_securetty.8 92297 2002-03-14 23:27:59Z des $ 36.\" 37.Dd July 8, 2001 38.Dt PAM_SECURETTY 8 39.Os 40.Sh NAME 41.Nm pam_securetty 42.Nd SecureTTY PAM module 43.Sh SYNOPSIS 44.Op Ar service-name 45.Ar module-type 46.Ar control-flag 47.Pa pam_securetty 48.Op Ar options 49.Sh DESCRIPTION 50The SecureTTY service module for PAM, 51.Nm 52provides functionality for only one PAM category: 53account management. 54In terms of the 55.Ar module-type 56parameter, this is the 57.Dq Li account 58feature. 59It also provides null functions for authentication and session 60management. 61.Ss SecureTTY Account Management Module 62The SecureTTY account management component 63.Pq Fn pam_sm_acct_mgmt , 64returns failure if the user is attempting to authenticate as superuser, 65and the process is attached to an insecure TTY. 66In all other cases, the module returns success. 67.Pp 68A TTY is considered secure if it is listed in 69.Pa /etc/ttys 70and has the 71.Dv TTY_SECURE 72flag set. 73.Pp 74The following options may be passed to the authentication module: 75.Bl -tag -width ".Cm no_warn" 76.It Cm debug 77.Xr syslog 3 78debugging information at 79.Dv LOG_DEBUG 80level. 81.It Cm no_warn 82suppress warning messages to the user. 83These messages include 84reasons why the user's 85authentication attempt was declined. 86.El 87.Sh SEE ALSO 88.Xr getttynam 3 , 89.Xr pam 3 , 90.Xr syslog 3 , 91.Xr pam.conf 5 , 92.Xr ttys 5 93