ibm-information-center/dist/eclipse/plugins/i5OS.ic.rzaiq_5.4.0.1/rzaiqrzaiqclientsession.htm

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<h1 class="topictitle1">Start and stop a client session</h1>
<div><p>You can start and stop a client session from this topic.</p>
<div class="section"><p>This topic provides details for using the File Transfer Protocol
(FTP) client on the iSeries™ server.</p>
<ul class="simple"><li><a href="#rzaiqrzaiqclientsession__startfptserver">Start an FTP client session</a></li>
<li><a href="#rzaiqrzaiqclientsession__endfptserver">Stop the FTP client session</a></li>
</ul>
</div>
<div class="section" id="rzaiqrzaiqclientsession__startfptserver"><a name="rzaiqrzaiqclientsession__startfptserver"><!-- --></a><h4 class="sectiontitle">Start an FTP client session</h4><p>Before
starting the FTP client function, you must have the following information:</p>
<ul><li>The name or Internet address of the system to which files are sent or
obtained.</li>
<li>A logon ID and password (if required) for the remote system where the
file transfers are to occur.</li>
<li>The name of the file or files with which you want to work (send and receive,
for example).</li>
</ul>
<p>The Start TCP/IP File Transfer Protocol (STRTCPFTP
"remotesystem") command starts a client session on the local iSeries server,
and then opens a connection to the FTP server on the specified remote system.
For example, entering the command <samp class="codeph">FTP myserver.com</samp> would
start a client session on the iSeries server, and then open a connection
to the FTP server on the remote myserver.com system. You can specify additional
parameters, or be prompted for them by typing STRTCPFTP without specifying
a remote system.</p>
<div class="figborder"><pre> Start TCP/IP File Transfer (FTP)
Type choices, press Enter.
Remote system . . . . . . . . . &gt; MYSERVER.COM
Coded character set identifier *DFT 1-65533, *DFT
Port . . . . . . . . . . . . . . &gt; *SECURE 1-65535, *DFT, *SECURE
Secure connection . . . . . . . *DFT *DFT, *NONE, *SSL, *IMPLICIT
Data protection . . . . . . . . *DFT *DFT, *CLEAR, *PRIVATE
</pre>
</div>
<p>After you specify a remote system name, you are prompted
to specify additional information. The following content summarizes the options
available, and additional details that are available in the field help:</p>
</div>
<div class="section"><h4 class="sectiontitle">Remote system (RMTSYS)</h4><p>Specifies the remote system
name to which or from which the files are transferred. The following items
are possible values:</p>
<dl><dt class="dlterm">*INTNETADR</dt>
<dd>The Internet address (INTNETADR) parameter is prompted. The Internet address
is specified in the form, nnn.nnn.nnn.nnn, where nnn is a decimal number ranging
from 0 through 255</dd>
<dt class="dlterm">remote-system</dt>
<dd>Specify the remote system name to which or from which the file transfer
takes place.</dd>
</dl>
</div>
<div class="section"><h4 class="sectiontitle">Coded character set identifier (CCSID)</h4><p>Specifies
the ASCII coded character set identifier (CCSID) that is used for single-byte
character set (SBCS) ASCII file transfers when the FTP TYPE mode is set to
ASCII. The possible values are:</p>
<dl><dt class="dlterm">*DFT</dt>
<dd>The CCSID value 00819 (ISO 8859-1 8-bit ASCII) is used.</dd>
<dt class="dlterm">CCSID-value</dt>
<dd>The requested CCSID value is used. This value is validated to ensure a
valid ASCII SBCS CCSID was requested.</dd>
</dl>
</div>
<div class="section"><h4 class="sectiontitle">Port (PORT)</h4><p>Specifies the port number
used for connecting to the FTP server. Normally, the common port value of
21 is used to connect to the FTP server. Under some circumstances, the FTP
server can be contacted at a port other than port 21. In those situations,
the port parameter can be used to specify the server port to connect to. The
possible values are:</p>
<dl><dt class="dlterm">*DFT</dt>
<dd>The value 00021 is used.</dd>
<dt class="dlterm">*SECURE</dt>
<dd>The value 00990 is used. Port 990 is reserved for secure FTP servers which
immediately use Transport Layer Security (TLS) or Secure Sockets Layer (SSL)
protocols to encrypt data.</dd>
<dt class="dlterm">port_value</dt>
<dd>The requested port value is used. This value is validated to ensure it
is in the proper range.</dd>
</dl>
<div class="note"><span class="notetitle">Note:</span> If 990 is specified, the FTP client will perform the
same functions as if *SECURE were specified.</div>
</div>
<div class="section" id="rzaiqrzaiqclientsession__seccnn"><a name="rzaiqrzaiqclientsession__seccnn"><!-- --></a><h4 class="sectiontitle">Secure connection (SECCNN)</h4><p>Specifies
the type of security mechanism to be used for protecting information transferred
on the FTP control connection (which includes the password used to authenticate
the session with the FTP server). Transport Layer Security (TLS) and Secure
Sockets Layer (SSL) are compatible protocols which use encryption to protect
data from being viewed during transmission and verify that data loss or corruption
does not occur.</p>
<div class="note"><span class="notetitle">Note:</span> The FTP client subcommand SECOPEN can be used to
open a protected FTP connection during an FTP client session.</div>
<p>The
possible values are:</p>
<dl><dt class="dlterm">*DFT</dt>
<dd>If the PORT parameter specifies *SECURE or 990, *IMPLICIT is used; otherwise,
*NONE is used.</dd>
<dt class="dlterm">*IMPLICIT</dt>
<dd>The FTP client immediately attempts to use TLS or SSL
when connecting to the specified FTP server (without sending an AUTH subcommand
to the server). If the server does not use implicit TLS or SSL on the specified
port, or the TLS or SSL negotiation fails for any reason, the connection is
closed.</dd>
<dt class="dlterm">*SSL</dt>
<dd>After connecting to the specified FTP server, the FTP client sends an
AUTH (authorization) subcommand requesting a TLS or SSL protected session.
If the server supports TLS or SSL, a TLS or SSL negotiation performed. If
the server does not support TLS or SSL or the TLS or SSL negotiation fails,
the connection is closed.</dd>
<dt class="dlterm">*NONE</dt>
<dd>The FTP client does not use encryption for the control connection to the
specified FTP server.</dd>
</dl>
</div>
<div class="section" id="rzaiqrzaiqclientsession__dtaprot"><a name="rzaiqrzaiqclientsession__dtaprot"><!-- --></a><h4 class="sectiontitle">Data protection (DTAPROT)</h4><p>Specifies
the type of data protection to be used for information transferred on the
FTP data connection. This connection is used to transfer file data and directory
listings. The FTP protocol does not allow protection of the data connection
if the control connection is not protected.</p>
<div class="note"><span class="notetitle">Note:</span> The FTP client subcommand
SECData can be used subsequently to change the data protection level. The
FTP client uses the FTP server subcommand PROT to request the specified data
protection after a secure control connection has been established.</div>
<p>The
possible values are:</p>
<dl><dt class="dlterm">*DFT</dt>
<dd>If the SECCNN parameter specifies a protected control connection, *PRIVATE
is used; otherwise, *CLEAR is used.</dd>
<dt class="dlterm">*PRIVATE</dt>
<dd>Information sent on the FTP data connection is encrypted. If the SECCNN
parameter specifies that the FTP control connection is not encrypted, *PRIVATE
cannot be specified.</dd>
<dt class="dlterm">*CLEAR</dt>
<dd>Information sent on the FTP data connection is not encrypted.</dd>
</dl>
</div>
<div class="section"><h4 class="sectiontitle">Outgoing ASCII/EBCDIC table (TBLFTPOUT)</h4><p>Specifies
the table object that is to be used to map all outgoing data in the FTP client.
Outgoing data is mapped from EBCDIC to ASCII. If no table object is specified
for TBLFTPOUT, the CCSID parameter is used to determine outgoing mapping.
The possible values are:</p>
<dl><dt class="dlterm">*CCSID</dt>
<dd>The CCSID parameter is used to determine outgoing mapping.</dd>
<dt class="dlterm">*DFT</dt>
<dd>The CCSID parameter is used to determine outgoing mapping.<p>The name
of the outgoing mapping table can be qualified by one of the following library
values:</p>
<dl><dt class="dlterm">*LIBL</dt>
<dd>All libraries in the user and system portions of the job's library list
are searched until the first match is found.</dd>
<dt class="dlterm">*CURLIB</dt>
<dd>The current library for the job is searched. If no library is specified
as the current library for the job, the QGPL library is used.</dd>
<dt class="dlterm">library-name</dt>
<dd>Specify the name of the library to be searched.</dd>
</dl>
</dd>
<dt class="dlterm">outgoing-mapping-table</dt>
<dd>Specify the table object to be used by the FTP client for mapping outgoing
data.</dd>
</dl>
</div>
<div class="section"><h4 class="sectiontitle">Incoming ASCII/EBCDIC table (TBLFTPIN)</h4><p>Specifies
the table object that is to be used to map all incoming data in the FTP client.
Incoming data is mapped from ASCII to EBCDIC. If no table object is specified
for TBLFTPIN, the CCSID parameter is used to determine incoming mapping. The
following items are possible values:</p>
<dl><dt class="dlterm">*CCSID</dt>
<dd>The CCSID parameter is used to determine incoming mapping.</dd>
<dt class="dlterm">*DFT</dt>
<dd>The CCSID parameter is used to determine incoming mapping.<p>The name
of the incoming mapping table can be qualified by one of the following library
values:</p>
<dl><dt class="dlterm">*LIBL</dt>
<dd>All libraries in the user and system portions of the job's library list
are searched until the first match is found.</dd>
<dt class="dlterm">*CURLIB</dt>
<dd>The current library for the job is searched. If no library is specified
as the current library for the job, the QGPL library is used.</dd>
<dt class="dlterm">library-name</dt>
<dd>Specify the name of the library to be searched.</dd>
</dl>
</dd>
<dt class="dlterm">incoming-mapping-table</dt>
<dd>Specify the table object to be used by the FTP client for mapping incoming
data.</dd>
</dl>
</div>
<div class="section" id="rzaiqrzaiqclientsession__endfptserver"><a name="rzaiqrzaiqclientsession__endfptserver"><!-- --></a><h4 class="sectiontitle">Stop the FTP client session</h4><p>Use
the QUIT subcommand to stop an FTP session. The QUIT subcommand closes the
connection with the remote host and ends the FTP session on the iSeries server.
Alternatively, you can press F3 (Exit), and then confirm to end the FTP client
session.</p>
</div>
</div>
<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaiqrzaiqclient.htm" title="You can start and stop client sessions, transfer and receive files, as well as set up File Transfer Protocol (FTP) batch jobs.">Use the File Transfer Protocol client on iSeries server</a></div>
</div>
<div class="relconcepts"><strong>Related concepts</strong><br />
<div><a href="rzaiqtlsssl.htm" title="You can use Transport Layer Security (TLS) or Secure Sockets Layer (SSL) connections to encrypt data transferred over File Transfer Protocol (FTP) control and data connections.">Secure the FTP client with Transport Layer Security or Secure Socket Layer</a></div>
</div>
<div class="reltasks"><strong>Related tasks</strong><br />
<div><a href="rzaiqtransftp.htm" title="You can send and receive files with File Transfer Protocol (FTP).">Transfer files with File Transfer Protocol</a></div>
</div>
<div class="relinfo"><strong>Related information</strong><br />
<div><a href="rzaiqscenariotrans.htm" title="To transfer a file to a test server, use basic File Transfer Protocol (FTP) to send the file to the remote host.">Scenario: Transfer a file from a remote host</a></div>
</div>
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