205 lines
13 KiB
HTML
205 lines
13 KiB
HTML
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<meta name="DC.Title" content="Set up virtual hosts on HTTP Server (powered by Apache)" />
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<title>Set up virtual hosts on HTTP Server (powered by Apache)</title>
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<body id="rzaieconfigvirtualhosts"><a name="rzaieconfigvirtualhosts"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Set up virtual hosts on HTTP Server (powered by Apache)</h1>
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<div><p>This topic provides information about how to set up virtual hosts
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on your HTTP Server with the <span>IBM<sup>®</sup> Web Administration for i5/OS™ interface</span>.</p>
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<div class="important"><span class="importanttitle">Important:</span> Information
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for this topic supports the latest PTF levels for HTTP Server for i5/OS .
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It is recommended that you install the latest PTFs to upgrade to the latest
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level of the HTTP Server for i5/OS. Some of the topics documented here are
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not available prior to this update. See <a href="http://www-03.ibm.com/servers/eserver/iseries/software/http/services/service.html" target="_blank">http://www.ibm.com/servers/eserver/iseries/software/http/services/service.htm</a> <img src="www.gif" alt="Link outside Information Center" /> for more information. </div>
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<p>Virtual hosts allow more than one Web site on one system or Web server.
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The servers are differentiated by their host name. Visitors to the Web site
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are routed by host name or IP address to the correct virtual host. Virtual
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hosting allows companies sharing one server to each have their own domain
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names. For example, <var class="varname">www.company1.com</var> and <var class="varname">www.company2.com</var> can
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both be hosted on the same server. See <a href="rzaievirtualhosting.htm">Virtual hosts on HTTP Server</a> for more information.</p>
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<p>You can configure virtual hosts by doing the following:</p>
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<ol><li>Click the <strong>Manage</strong> tab.</li>
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<li>Click the <span class="uicontrol">HTTP Servers</span> subtab.</li>
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<li>Select your HTTP Server (powered by Apache) from the <strong>Server</strong> list.</li>
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<li>Select <strong>Global configuration</strong> from the <strong>Server area</strong> list.</li>
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<li>Expand <strong>Server Properties</strong>.</li>
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<li>Click <strong>Virtual Hosts</strong>.</li>
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<li>Click either the <strong>Name-based</strong> virtual host tab or the <strong>IP-based</strong> virtual
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host tab in the form.</li>
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</ol>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaieparvhost.htm" title="This topic provides step-by-step tasks for virtual hosts.">Virtual host tasks</a></div>
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</div>
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</div><div class="nested1" id="namebased"><a name="namebased"><!-- --></a><h2 class="topictitle2">Name-based virtual hosts</h2>
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<div><p>The name-based virtual host allows one IP address to host more than one
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Web site (hostname). This approach allows a single HTTP Server to service
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requests directed at many different hostnames. This simplifies configuration
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and use, and requires no additional hardware or software. The main disadvantage
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to this approach is that the client must support HTTP 1.1 (or HTTP 1.0 with
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1.1 extensions) that include the server hostname information inside the HTTP
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document requests. The latest versions of most browsers support HTTP 1.1 (or
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HTTP 1.0 with 1.1 extensions), but there are still old browsers that only
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support HTTP 1.0. For more information on virtual hosts refer to the <a href="rzaiemod_core.htm#virtualhost"><VirtualHost></a> directive.</p>
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<ol><li>Click the <strong>Manage</strong> tab.</li>
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<li>Click the <span class="uicontrol">HTTP Servers</span> subtab.</li>
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<li>Select your HTTP Server (powered by Apache) from the <strong>Server</strong> list.</li>
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<li>Select <strong>Global configuration</strong> from the <strong>Server area</strong> list.</li>
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<li>Expand <strong>Server Properties</strong>.</li>
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<li>Click <strong>Virtual Hosts</strong>.</li>
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<li>Click the <strong>Name-based</strong> tab in the form.</li>
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<li>Click <strong>Add</strong> under the <strong>Named virtual hosts</strong> table.</li>
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<li>Select or enter an IP address in the <strong>IP address </strong>column.<div class="note"><span class="notetitle">Note:</span> The <span>IBM Web Administration for i5/OS interface</span> provides the IP addresses
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used by your iSeries™ system
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in the IP Address list; however, you will need to provide the hostname associated
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with the address you choose and register the hostname with your Domain Name
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Server (DNS).</div>
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</li>
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<li>Enter a port number in the <strong>Port</strong> column.</li>
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<li>Click <strong>Add</strong> under the <strong>Virtual host containers</strong> table in the <strong>Named
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host</strong> column.</li>
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<li>Enter the fully qualified server hostname for the virtual host in the <strong>Server
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name</strong> column.<div class="note"><span class="notetitle">Note:</span> Make sure the server hostname you enter is fully qualified
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and associated with the IP address you selected.</div>
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</li>
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<li>Enter a document root for the virtual host index file or welcome file
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in the <strong>Document root</strong> column.</li>
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<li>Click <strong>Continue</strong>.</li>
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<li>Click <strong>OK</strong>.</li>
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</ol>
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</div>
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</div>
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<div class="nested1" id="ipbased"><a name="ipbased"><!-- --></a><h2 class="topictitle2">IP-based virtual hosts</h2>
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<div><p>The IP-based virtual host requires one IP address per Web site (host name).
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This approach works very well, but requires a dedicated IP address for every
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virtual host. For more information on virtual hosts refer to the <a href="rzaiemod_core.htm#virtualhost"><VirtualHost></a> directive.</p>
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<ol><li>Click the <strong>Manage</strong> tab.</li>
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<li>Click the <span class="uicontrol">HTTP Servers</span> subtab.</li>
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<li>Select your HTTP Server (powered by Apache) from the <strong>Server</strong> list.</li>
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<li>Select <strong>Global configuration</strong> from the <strong>Server area</strong> list.</li>
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<li>Expand <strong>Server Properties</strong>.</li>
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<li>Click <strong>Virtual Hosts</strong>.</li>
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<li>Click the <strong>IP-based</strong> tab in the form.</li>
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<li>Click <strong>Add</strong> under the <strong>Virtual host containers</strong> table.</li>
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<li>Enter a valid IP address in the <strong>IP address or hostname</strong> column.</li>
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<li>Enter a valid port number in the <strong>Port</strong> column. </li>
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<li><strong>Optional</strong>: Enter a server name in the <strong>Server name</strong> column.</li>
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<li><strong>Optional</strong>: Enter the document root from where the files will be
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served in the <strong>Document root</strong> column.</li>
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<li>Click <strong>Continue</strong>.</li>
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<li>Click <strong>OK</strong>.</li>
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</ol>
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</div>
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</div>
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<div class="nested1" id="massdynamic"><a name="massdynamic"><!-- --></a><h2 class="topictitle2">Mass-dynamic virtual hosting</h2>
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<div><p>Use the Mass-dynamic tab to create a dynamic virtual host with a Name-based
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or IP-based virtual host, or work with canonical names. A canonical name is
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the actual name of an HTTP Server resource. For example, a canonical name
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of the HTTP Server powered by Apache) is its true name rather than an alias.
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See directive <a href="rzaiemod_core.htm#usecanonicalname"><UseCanonicalName></a> for more information.</p>
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<p>The dynamic virtual host allows you to dynamically add Web sites (hostnames)
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by adding directories of content. This approach is based on automatically
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inserting the IP address and the contents of the Host: header into the pathname
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of the file that is used to satisfy the request.</p>
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<p>The Mass-dynamic tab provides a subset of options that are more complex
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than those provided by the other tabs. The options include specifying the
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root directory for serving files, and selecting the root directory for CGI
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scripts. The availability of these settings are dependent on what server area
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you are working with.</p>
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<p>At the global configuration server area, all mass-dynamic settings are
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available. These include:</p>
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<ul><li>Options on how to build self-referencing URL's.</li>
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<li>Options for the root directory for serving files.</li>
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<li>Options for the root directory for CGI scripts.</li>
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</ul>
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<p>The mass-dynamic settings use strings and substrings to create a dynamic
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virtual hosts. For example, to create a simple dynamic virtual host, the Root
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directory for serving files option is defined as <tt><strong>/usr/local/apache/vhosts/%0</strong></tt> and <strong>Use
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server name</strong> is selected. A request for <tt><strong>http://www.ibm.com/directory/file.html
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returns</strong></tt> <tt><strong>/usr/local/apache/vhosts/www.ibm.com/directory/file.html</strong></tt>.
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</p>
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<p>The string <tt><strong>%0</strong></tt> is an interpolate (insert) string of the
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server name or IP address. The following defines the interpolate string: </p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th colspan="2" valign="top" id="d0e345">Interpolate (insert) strings</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" width="15.736040609137056%" headers="d0e345 ">%%</td>
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<td valign="top" width="84.26395939086294%" headers="d0e345 ">inserts a %</td>
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</tr>
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<tr><td valign="top" width="15.736040609137056%" headers="d0e345 ">%p</td>
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<td valign="top" width="84.26395939086294%" headers="d0e345 ">inserts the port number of the virtual host</td>
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</tr>
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<tr><td valign="top" width="15.736040609137056%" headers="d0e345 ">%N.M</td>
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<td valign="top" width="84.26395939086294%" headers="d0e345 ">inserts (part of) the name</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p><strong>N</strong> and<strong> M</strong> are used to specify substrings of the name. <strong>N</strong> selects
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from the period-separated components of the name, and <strong>M</strong> selects characters
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within whatever <strong>N</strong> has selected. <strong>M</strong> is optional and defaults to
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zero if it is not present; the period must be present if and only if <strong>M</strong> is
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present. The interpretation is as follows:</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th colspan="2" valign="top" id="d0e391">Substring interpretation</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" width="23.46938775510204%" headers="d0e391 ">0</td>
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<td valign="top" width="76.53061224489795%" headers="d0e391 ">the whole name</td>
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</tr>
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<tr><td valign="top" width="23.46938775510204%" headers="d0e391 ">1</td>
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<td valign="top" width="76.53061224489795%" headers="d0e391 ">the first part</td>
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</tr>
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<tr><td valign="top" width="23.46938775510204%" headers="d0e391 ">2</td>
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<td valign="top" width="76.53061224489795%" headers="d0e391 ">the second part</td>
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</tr>
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<tr><td valign="top" width="23.46938775510204%" headers="d0e391 ">-1</td>
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<td valign="top" width="76.53061224489795%" headers="d0e391 ">the last part</td>
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</tr>
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<tr><td valign="top" width="23.46938775510204%" headers="d0e391 ">-2</td>
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<td valign="top" width="76.53061224489795%" headers="d0e391 ">the next to last part</td>
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</tr>
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<tr><td valign="top" width="23.46938775510204%" headers="d0e391 ">2+</td>
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<td valign="top" width="76.53061224489795%" headers="d0e391 ">the second and all subsequent parts</td>
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</tr>
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<tr><td valign="top" width="23.46938775510204%" headers="d0e391 ">-2+</td>
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<td valign="top" width="76.53061224489795%" headers="d0e391 ">the next to last part and all preceding parts</td>
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</tr>
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<tr><td valign="top" width="23.46938775510204%" headers="d0e391 ">1+ and -1+</td>
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<td valign="top" width="76.53061224489795%" headers="d0e391 ">the same as 0</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p>For more information on mass-dynamic virtual hosts refer to <a href="rzaiemod_vhost_alias.htm">mod_vhost_alias</a>.</p>
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</div>
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</div>
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</body>
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