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+.\"     Title: pam_ftp
+.\"    Author: 
+.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/>
+.\"      Date: 04/16/2008
+.\"    Manual: Linux-PAM Manual
+.\"    Source: Linux-PAM Manual
+.\"
+.TH "PAM_FTP" "8" "04/16/2008" "Linux-PAM Manual" "Linux\-PAM Manual"
+.\" disable hyphenation
+.nh
+.\" disable justification (adjust text to left margin only)
+.ad l
+.SH "NAME"
+pam_ftp - PAM module for anonymous access module
+.SH "SYNOPSIS"
+.HP 11
+\fBpam_ftp\.so\fR [debug] [ignore] [users=\fIXXX,YYY,\fR...]
+.SH "DESCRIPTION"
+.PP
+pam_ftp is a PAM module which provides a pluggable anonymous ftp mode of access\.
+.PP
+This module intercepts the user\'s name and password\. If the name is
+\fIftp\fR
+or
+\fIanonymous\fR, the user\'s password is broken up at the
+\fI@\fR
+delimiter into a
+\fIPAM_RUSER\fR
+and a
+\fIPAM_RHOST\fR
+part; these pam\-items being set accordingly\. The username (\fIPAM_USER\fR) is set to
+\fIftp\fR\. In this case the module succeeds\. Alternatively, the module sets the
+\fIPAM_AUTHTOK\fR
+item with the entered password and fails\.
+.PP
+This module is not safe and easily spoofable\.
+.SH "OPTIONS"
+.PP
+.PP
+\fBdebug\fR
+.RS 4
+Print debug information\.
+.RE
+.PP
+\fBignore\fR
+.RS 4
+Pay no attention to the email address of the user (if supplied)\.
+.RE
+.PP
+\fBftp=\fR\fB\fIXXX,YYY,\.\.\.\fR\fR
+.RS 4
+Instead of
+\fIftp\fR
+or
+\fIanonymous\fR, provide anonymous login to the comma separated list of users:
+\fB\fIXXX,YYY,\.\.\.\fR\fR\. Should the applicant enter one of these usernames the returned username is set to the first in the list:
+\fIXXX\fR\.
+.RE
+.SH "MODULE SERVICES PROVIDED"
+.PP
+Only the
+\fBauth\fR
+service is supported\.
+.SH "RETURN VALUES"
+.PP
+.PP
+PAM_SUCCESS
+.RS 4
+The authentication was successfull\.
+.RE
+.PP
+PAM_USER_UNKNOWN
+.RS 4
+User not known\.
+.RE
+.SH "EXAMPLES"
+.PP
+Add the following line to
+\fI/etc/pam\.d/ftpd\fR
+to handle ftp style anonymous login:
+.sp
+.RS 4
+.nf
+#
+# ftpd; add ftp\-specifics\. These lines enable anonymous ftp over
+#       standard UN*X access (the listfile entry blocks access to
+#       users listed in /etc/ftpusers)
+#
+auth    sufficient  pam_ftp\.so
+auth    required    pam_unix\.so use_first_pass
+auth    required    pam_listfile\.so \e
+           onerr=succeed item=user sense=deny file=/etc/ftpusers
+      
+.fi
+.RE
+.sp
+.SH "SEE ALSO"
+.PP
+
+\fBpam.conf\fR(5),
+\fBpam.d\fR(8),
+\fBpam\fR(8)
+.SH "AUTHOR"
+.PP
+pam_ftp was written by Andrew G\. Morgan <morgan@kernel\.org>\.