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  3. February 2008

Re: FTP changes in V6R1

rob@xxxxxxxxx wrote:
>From some official IBM documentation:
"FTP changes In V6R1, the FTP client attempts to use Extended Passive Mode for data connections. This is a change from previous releases. Not all FTP servers support this new functionality and users might see the FTP550 error before getting the data. You can issue a SENDEPSV command to shut off this functionality for the current session before issuing any data command. "

Hopefully most servers support it. According wikipedia, the EPSV command was defined almost ten years ago:

In *extended passive mode*, the FTP server operates exactly the same as passive mode, however it only transmits the port number (not broken into high and low bytes) and the client is to assume that it connects to the same IP address that was originally connected to. Extended passive mode was added by RFC 2428 <http://tools.ietf.org/html/rfc2428> in September 1998.

Joe

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