This sounds like a problem we had while trying to send a PGPed file to a bank. The banks server didn't understand what I think was a window or windowing instruction (nothing to do with GUI). We tried a different client and all was good. No SSL involved. Won't a trace help?
EdP Hal Merritt <hmerr...@jackhenry.com> Sent by: IBM Mainframe Discussion List <IBM-MAIN@bama.ua.edu> 01/21/2009 12:11 PM Please respond to IBM Mainframe Discussion List <IBM-MAIN@bama.ua.edu> To IBM-MAIN@bama.ua.edu cc Subject Re: FTP SSL with large file transfer It's the same server under z/os, but typically one of any number of client software. I'd focus on the client software and the network appliances. A transfer that just stops for no reason is often a firewall configuration issue. Firewalls typically say nothing (the 'black hole' behavior) or spoof normal completion signals making each end think the other has asked for a graceful close. -----Original Message----- From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of Hideko Igarashi Sent: Wednesday, January 21, 2009 10:20 AM To: IBM-MAIN@bama.ua.edu Subject: FTP SSL with large file transfer The FTP server on z/OS 1.7 and the client is my Windows PC. Normally FTP with SSL is running fine. From time to time, it hangs in the middle of transfer from MF to PC. (no error message, it times out.) Today it worked with 5.5Mb but not with more than 10Mb. If I run FTP without SSL, I could download them all. If I think of it, the file size is usually more than 5Mb when the problem happens. Is there any file size limitation to use SSL or any gatchu? Hideko Igarashi NOTICE: This electronic mail message and any files transmitted with it are intended exclusively for the individual or entity to which it is addressed. The message, together with any attachment, may contain confidential and/or privileged information. Any unauthorized review, use, printing, saving, copying, disclosure or distribution is strictly prohibited. If you have received this message in error, please immediately advise the sender by reply email and delete all copies. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html Notice: This communication, including any attachments, is intended solely for the use of the individual or entity to which it is addressed. This communication may contain information that is protected from disclosure under State and/or Federal law. Please notify the sender immediately if you have received this communication in error and delete this email from your system. If you are not the intended recipient, you are requested not to disclose, copy, distribute or take any action in reliance on the contents of this information. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
