66 lines
3.6 KiB
HTML
66 lines
3.6 KiB
HTML
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="PORT (Data Port)" />
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>PORT (Data Port)</title>
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</head>
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<body id="rzaiqport"><a name="rzaiqport"><!-- --></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">PORT (Data Port)</h1>
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<div><div class="section"><h4 class="sectiontitle">FTP server subcommand</h4><p>To identify the
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port on which the client will listen for a data connection, use the PORT FTP
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server subcommand in this format:</p>
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<div class="figborder"><p>PORT h1,h2,h3,h4,p1,p2</p>
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</div>
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<dl><dt class="dlterm">h <em>n</em></dt>
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<dd>Represents the system IP address and is a character string that is a decimal
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value between 0 and 255.</dd>
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<dt class="dlterm">p <em>n</em></dt>
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<dd>Represents the TCP port number and is a character string that is a decimal
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value between 0 and 255.</dd>
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</dl>
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<p>To convert the <samp class="codeph">p1</samp> and <samp class="codeph">p2</samp> values
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to a TCP port number, use this formula:</p>
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<pre> port = ( p1 * 256 ) + p2</pre>
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<p>For
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example, in this PORT subcommand:</p>
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<pre> PORT 9,180,128,180,4,8</pre>
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<p>the
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port number is 1032 and the IP address is 9.180.128.180.</p>
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<div class="note"><span class="notetitle">Note:</span> After the
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server closes the connection, it cannot connect to the same client IP address
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and port number until a two-minute time delay has occurred as specified in
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TCP/IP RFC 1122. The server can make a connection to the same client IP address
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on a different port number without this restriction.</div>
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</div>
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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="rzaiqserversu.htm" title="These subcommands represent communication between the client and server. This topic includes descriptions for iSeries CL-equivalent subcommands that are unique to iSeries FTP server.">File Transfer Protocol server subcommands</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rzaiqsscsc.htm" title="The File Transfer Protocol (FTP) server subcommands described in this topic make use of syntax conventions:">File Transfer Protocol server syntax conventions</a></div>
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</div>
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</div>
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</body>
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