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Code Editor : sag-pam_ftp.html

<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>6.10. pam_ftp - module for anonymous access</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="Linux-PAM_SAG.html" title="The Linux-PAM System Administrators' Guide"><link rel="up" href="sag-module-reference.html" title="Chapter 6. A reference guide for available modules"><link rel="prev" href="sag-pam_filter.html" title="6.9. pam_filter - filter module"><link rel="next" href="sag-pam_group.html" title="6.11. pam_group - module to modify group access"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">6.10. pam_ftp - module for anonymous access</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="sag-pam_filter.html">Prev</a> </td><th width="60%" align="center">Chapter 6. A reference guide for available modules</th><td width="20%" align="right"> <a accesskey="n" href="sag-pam_group.html">Next</a></td></tr></table><hr></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="sag-pam_ftp"></a>6.10. pam_ftp - module for anonymous access</h2></div></div></div><div class="cmdsynopsis"><p><code class="command">pam_ftp.so</code>  [
	debug
      ] [
        ignore
      ] [
        users=<em class="replaceable"><code>XXX,YYY,</code></em>
      ...]</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_ftp-description"></a>6.10.1. DESCRIPTION</h3></div></div></div><p>
      pam_ftp is a PAM module which provides a pluggable
      anonymous ftp mode of access.
    </p><p>
      This module intercepts the user's name and password. If the name is
      <span class="emphasis"><em>ftp</em></span> or <span class="emphasis"><em>anonymous</em></span>, the
      user's password is broken up at the <span class="emphasis"><em>@</em></span> delimiter
      into a <span class="emphasis"><em>PAM_RUSER</em></span> and a
      <span class="emphasis"><em>PAM_RHOST</em></span> part; these pam-items being set
      accordingly. The username (<span class="emphasis"><em>PAM_USER</em></span>) is set
      to <span class="emphasis"><em>ftp</em></span>.  In this case the module succeeds.
      Alternatively, the module sets the <span class="emphasis"><em>PAM_AUTHTOK</em></span>
      item with the entered password and fails.
    </p><p>
      This module is not safe and easily spoofable.
    </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_ftp-options"></a>6.10.2. OPTIONS</h3></div></div></div><p>
      </p><div class="variablelist"><dl class="variablelist"><dt><span class="term">
            <code class="option">debug</code>
          </span></dt><dd><p>
	      Print debug information.
            </p></dd><dt><span class="term">
            <code class="option">ignore</code>
          </span></dt><dd><p>
              Pay no attention to the email address of the user
              (if supplied).
            </p></dd><dt><span class="term">
            <code class="option">ftp=<em class="replaceable"><code>XXX,YYY,...</code></em></code>
          </span></dt><dd><p>
              Instead of <span class="emphasis"><em>ftp</em></span> or
              <span class="emphasis"><em>anonymous</em></span>, provide anonymous login
              to the comma separated list of users:
              <code class="option"><em class="replaceable"><code>XXX,YYY,...</code></em></code>.
              Should the applicant enter
              one of these usernames the returned username is set to
              the first in the list: <span class="emphasis"><em>XXX</em></span>.
            </p></dd></dl></div><p>

</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_ftp-types"></a>6.10.3. MODULE TYPES PROVIDED</h3></div></div></div><p>
      Only the <code class="option">auth</code> module type is provided.
    </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_ftp-return_values"></a>6.10.4. RETURN VALUES</h3></div></div></div><p>
      </p><div class="variablelist"><dl class="variablelist"><dt><span class="term">PAM_SUCCESS</span></dt><dd><p>
              The authentication was successful.
            </p></dd><dt><span class="term">PAM_USER_UNKNOWN</span></dt><dd><p>
	      User not known.
            </p></dd></dl></div><p>
    </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_ftp-examples"></a>6.10.5. EXAMPLES</h3></div></div></div><p>
      Add the following line to <code class="filename">/etc/pam.d/ftpd</code> to
      handle ftp style anonymous login:
      </p><pre class="programlisting">
#
# 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 \
           onerr=succeed item=user sense=deny file=/etc/ftpusers
      </pre><p>
    </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_ftp-author"></a>6.10.6. AUTHOR</h3></div></div></div><p>
        pam_ftp was written by Andrew G. Morgan &lt;morgan@kernel.org&gt;.
      </p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sag-pam_filter.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="sag-module-reference.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="sag-pam_group.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">6.9. pam_filter - filter module </td><td width="20%" align="center"><a accesskey="h" href="Linux-PAM_SAG.html">Home</a></td><td width="40%" align="right" valign="top"> 6.11. pam_group - module to modify group access</td></tr></table></div></body></html>

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Code Editor : sag-pam_ftp.html