So am I. 😊 I was talking about plural straight FTP, not FTPS as in secure FTP. Zscaler got brought into our environment and it broke a bunch of homegrown windows applications that were doing FTP processing in the middle of them. Send a request to the mainframe, let the mainframe run a job, then FTP the output back to Windows to get pulled into a spreadsheet. Zscaler wouldn't allow Microsoft ftp to pass through it. And neither side will budge.
So if anybody knows a drop-in Windows command line FTP client that will run passive mode, I'm all ears. Rex -----Original Message----- From: IBM Mainframe Discussion List <[email protected]> On Behalf Of rpinion865 Sent: Tuesday, January 20, 2026 1:54 PM To: [email protected] Subject: Re: [EXTERNAL] Re: Filezilla - Xfer to ZOS USS filesystem? I thought the OP was talking about FTP not FTPs. "Confidentially doc, I am the wabbit." Bugs Bunny Sent with Proton Mail secure email. On Tuesday, January 20th, 2026 at 2:50 PM, Pommier, Rex <[email protected]> wrote: > Not if you have zscaler in the middle. ☹ Windows FTP only accepts active mode > straight FTPs, and zscaler only allows passive. > > -----Original Message----- > From: IBM Mainframe Discussion List [email protected] On Behalf > Of rpinion865 > > Sent: Tuesday, January 20, 2026 1:30 PM > To: [email protected] > Subject: [EXTERNAL] Re: Filezilla - Xfer to ZOS USS filesystem? > > You can use plain-jane ftp from your Windows machine to z/OS. After you > successfully logon, issue cd /what/ever/directory/you/want, check the message > back from the CD command, that it says the directory you just typed. > > > > "Confidentially doc, I am the wabbit." > > Bugs Bunny > > Sent with Proton Mail secure email. > > > On Tuesday, January 20th, 2026 at 2:21 PM, Steve Estle > [email protected] wrote: > > > All, > > > > Trying this for the first time recently. I have been using Filezilla > > regularly for nearly a year but up till now it was only to FTP up and down > > files from Windows 11 to/from ZOS traditional datasets (Ascii & Bin) and > > all works fine there. > > > > I am now in the midst of installing Semeru Java 17 onto a ZOS 2.5 system > > where I need to upload the PAX file into Unix Sys Svcs from my Win 11 > > laptop filesystem. I've downloaded files from IBM website. > > > > My issue is as follows: > > > > 1. I launch Filezilla and connect via FTP (native FTP) to ZOS 3.1 LPAR > > using proper credentials to mainframe. > > 2. I then use the right hand side of navigator pane to navigate to Unix > > System Svcs target directory - in this case it is '/u/ts0sxe/Java17/. I set > > the xfer type to Binary. > > 3. I then drag/drop the Java 17 PAX file from left (Windows) navigation > > pane to right (ZOS) navigation pane. > > 4. The file xfer completes successfully according to Filezilla. > > > > All is wonderfull - right? Wrong... :-( > > > > I then login to ZOS 3.1 TSO/ISPF - goto 3.17 and my target directory > > ('/u/ts0sxe/Java17/) is empty. (I also tried a small text (ASCII) file as > > well- same result)... > > > > Am I doing something wrong or is this some sort of Filezilla restriction? > > > > If restriction, then can someone enlighten me on how you FTP upload a PAX > > file to Unix Sys Svcs or is there a different methodology folks here use > > that I am not considering? > > > > Thanks, > > Steve Estle > > CDW Senior Systems Programmer > > > > -------------------------------------------------------------------- > > -- For IBM-MAIN subscribe / signoff / archive access instructions, > > send email to [email protected] with the message: INFO > > IBM-MAIN > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send > email to [email protected] with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send > email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
