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  3. July 2020

Re: specifying local port on ftp client

I'm not aware of any way to modify the "from port" of FTP (or, for that matter, most applications.)  This is generally chosen at random by the OS from the ports that aren't in use.

FTP is even a bit more complicated since each time a directory listing or a file transfer occurs, it opens a separate port to do that.   In active FTP, some clients allow you to configure an ephemeral port list, but typically this would not be used for passive FTP, and wouldn't be used for the control connection.

On 7/15/2020 2:46 PM, Rob Berendt wrote:
When I use my IBM i as an ftp client to connect somewhere is there a way to specify the local port I start out from?
I am not talking about the target port as in
open "delivery01-bld.dhe.ibm.com" 21
or
FTP RMTSYS("delivery01-bld.dhe.ibm.com") PORT(21)

Apparently getting someone to modify the permit list here is only done after exhausting all other avenues.



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