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+.\" Copyright (c) 2001 Mark R V Murray
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd July 8, 2001
+.Dt PAM_FTP 8
+.Os
+.Sh NAME
+.Nm pam_ftp
+.Nd FTP PAM module
+.Sh SYNOPSIS
+.Op Ar service-name
+.Ar module-type
+.Ar control-flag
+.Pa pam_ftp
+.Op Ar options
+.Sh DESCRIPTION
+The FTP authentication service module for PAM,
+.Nm
+provides functionality for only one PAM category:
+authentication.
+In terms of the 
+.Ar module-type
+parameter, this is the
+.Dv auth
+feature.
+It also provides a null function for session management.
+.Ss FTP Authentication Module
+The FTP authentication component
+.Pq Fn pam_sm_authenticate ,
+authenticates the anonymous user
+.Pq usually Do anonymous Dc or Do ftp Dc
+usually by simply requesting an email address as a password.
+The supplied email address is broken up
+into its username and host parts,
+and these are assigned to the
+.Dv PAM_RUSER
+and
+.Dv PAM_RHOST
+facilities respectively.
+.Pp
+This module is intended for the
+.Xr ftpd 8
+service.
+.Pp
+The following options may be passed to the authentication module:
+.Bl -tag -xwidth ".Cm use_first_pass"
+.It Cm debug
+.Xr syslog 3
+debugging information at
+.Dv LOG_DEBUG
+level.
+.It Cm no_anon
+Disallow anonymous access.
+.It Cm ignore
+Ingnore the password supplied,
+and do not use its constituent parts
+.Pq username and hostname
+as
+.Dv PAM_RUSER
+and
+.Dv PAM_RHOST
+respectively.
+.El
+.Sh SEE ALSO
+.Xr ftp 1 ,
+.Xr syslog 3 ,
+.Xr pam.conf 5 ,
+.Xr ftpd 8 ,
+.Xr pam 8