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  <title>Permission Checking</title>
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vlink="#840084" alink="#0000FF">
  <div class="NAVHEADER">
    <table summary="Header navigation table" width="100%" border=
    "0" cellpadding="0" cellspacing="0">
      <tr>
        <th colspan="3" align="center">LPRng Reference Manual: 24
        Sep 2004 (For LPRng-3.8.28)</th>
      </tr>

      <tr>
        <td width="10%" align="left" valign="bottom"><a href=
        "auth.htm" accesskey="P">Prev</a></td>

        <td width="80%" align="center" valign="bottom">Chapter 17.
        Permissions and Authentication</td>

        <td width="10%" align="right" valign="bottom"><a href=
        "x9196.htm" accesskey="N">Next</a></td>
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  </div>

  <div class="SECT1">
    <h1 class="SECT1"><a name="AEN9164" id="AEN9164">17.11.
    Permission Checking</a></h1>

    <p>When an authenticated transfer has been performed, the
    following permission information will be provided.</p>

    <ul>
      <li>
        <p>AUTH This value is <tt class="LITERAL">true</tt> or
        <tt class="LITERAL">match</tt> if an authenticated request
        was received.</p>
      </li>

      <li>
        <p>AUTHTYPE=authtype This has the value of the <tt class=
        "LITERAL">authtype</tt> field in the authentication
        request.</p>
      </li>

      <li>
        <p>AUTHUSER=userinfo This is the <acronym class=
        "ACRONYM">AUTHUSER</acronym> information provided by the
        authentication protocol, and is usually the originating
        user's identification.</p>
      </li>

      <li>
        <p>AUTHFROM=frominfo This is the <acronym class=
        "ACRONYM">AUTHUSER</acronym> information provided by the
        authentication protocol, and is usually the originating
        system (user or lpd server) identification.</p>
      </li>

      <li>
        <p>AUTHSAMEUSER This item has effect only when checking
        jobs in a spool queue. The <acronym class=
        "ACRONYM">AUTHUSER</acronym> information from the request
        is compared to the <acronym class=
        "ACRONYM">AUTHUSER</acronym> information from the request
        that created a job. If they are identical, the match
        succeeds.</p>
      </li>

      <li>
        <p>AUTHJOB This item has effect only when checking jobs in
        a spool queue. If the job was transfered using an
        authentication protocol the match succeeds.</p>
      </li>
    </ul>

    <p>For example, to reject non-authenticated operations, the
    following line could be put in the permissions file.</p>

    <div class="INFORMALEXAMPLE">
      <a name="AEN9188" id="AEN9188"></a>
      <pre class="SCREEN">
REJECT NOT AUTH
</pre>
    </div>

    <p>If a remote server has id information FFEDBEEFDEAF, then the
    following will accept only forwarded jobs from this server.</p>

    <div class="INFORMALEXAMPLE">
      <a name="AEN9191" id="AEN9191"></a>
      <pre class="SCREEN">
ACCEPT AUTH AUTHFROM=FFEDBEEFDEAF
REJECT AUTH
REJECT NOT AUTH
</pre>
    </div>

    <p>To allow only authenticated users to remove jobs you can
    use:</p>

    <div class="INFORMALEXAMPLE">
      <a name="AEN9194" id="AEN9194"></a>
      <pre class="SCREEN">
ACCEPT AUTH SERVICE=R,M,L,P AUTHSAMEUSER
REJECT AUTH
REJECT NOT AUTH
</pre>
    </div>
  </div>

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        "x9196.htm" accesskey="N">Next</a></td>
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      <tr>
        <td width="33%" align="left" valign="top">Authentication
        Operations</td>

        <td width="34%" align="center" valign="top"><a href=
        "permsref.htm" accesskey="U">Up</a></td>

        <td width="33%" align="right" valign="top">PGP
        Authentication Support</td>
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