91 lines
5.4 KiB
HTML
91 lines
5.4 KiB
HTML
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<meta name="DC.Title" content="SENDPASV (Specify Whether to send a PASV Subcommand)" />
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<title>SENDPASV (Specify Whether to send a PASV Subcommand)</title>
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</head>
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<body id="rzaiqsendpasv"><a name="rzaiqsendpasv"><!-- --></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">SENDPASV (Specify Whether to send a PASV Subcommand)</h1>
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<div><div class="section"><h4 class="sectiontitle">FTP client subcommand</h4><p>To specify whether or not
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to send a PASV subcommand to the FTP server when doing a data transfer or
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issuing the DIR and LS subcommands, enter the SENDPASV FTP client subcommand:</p>
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<div class="figborder"><p>SENDPAsv [ 0 | 1 ]</p>
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</div>
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<p>If there is no parameter SENDPASV works like a toggle switch. The
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SENDPASV value toggles from 1 (ON) to 0 (OFF) or from 0 to 1.</p>
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<p>When there
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is a parameter, the valid values are:</p>
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<dl><dt class="dlterm">0</dt>
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<dd>Do not send a PASV subcommand.</dd>
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<dt class="dlterm">1</dt>
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<dd>Send a PASV subcommand. This is the default.</dd>
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</dl>
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<p>iSeries™ default (on) is to send the PASV subcommand.
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When SENDPASV is off, then the server does not send the PASV subcommand.</p>
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<div class="note"><span class="notetitle">Notes:</span> <ol><li>This subcommand supports RFC 1579, "Firewall-Friendly FTP." Use of the
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PASV subcommand to establish a data connection is a better method when a data
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transfer must go through a firewall. In some scenarios, a data transfer through
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a firewall might not be possible without use of PASV.</li>
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<li>Some FTP servers might not support the PASV subcommand. When this is the
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situation and SENDPASV is ON, then the FTP client will display a message that
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indicates that the server does not support PASV. The system will attempt to
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establish the data connection without sending the PASV subcommand.</li>
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<li>When SENDPASV is OFF or disabled, then the server sends the PORT subcommand
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when SENDPORT is ON.</li>
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<li>FTP servers that do not support PASV are not compliant with RFC 1123.</li>
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</ol>
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</div>
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<div class="restriction"><span class="restrictiontitle">Restriction:</span> <p>When connected to
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an FTP server through a SOCKS server, you can only use the SENDPASV subcommand
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before you issue a data transfer subcommand or a list directory subcommand.
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If you use SENDPASV after one of these subcommands, then the client cannot
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be able to establish a data connection to the FTP server.</p>
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<p>After the
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client has issued a data transfer or list directory subcommand, then close
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the connection to the FTP server through a SOCKS server before you issue SENDPASV
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again.</p>
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<p>You can use the SENDPASV subcommand when the FTP client is disconnected
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from an FTP server.</p>
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</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="rzaiqclientsu.htm" title="Use File Transfer Protocol (FTP) client subcommands to establish a connection with a remote FTP server, navigate libraries and directories, create and delete files, and transfer files.">File Transfer Protocol client 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="rzaiqsendport.htm">SENDPORT (Specify Whether to Sends a PORT Subcommand)</a></div>
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<div><a href="rzaiqcsubcs.htm" title="The File Transfer Protocol (FTP) client subcommands described in this topic make use of syntax conventions:">File Transfer Protocol client syntax conventions</a></div>
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</div>
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<div class="relinfo"><strong>Related information</strong><br />
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<div><a href="http://www.rfc-editor.org/rfcsearch.html">RFC index search engine</a></div>
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<div><a href="http://www.rfc-editor.org/">RFC editor</a></div>
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</div>
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