Zero window size seen in some FTP connections

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Technical Alert

Affected Products

Reporter version build 78536.  Earlier versions are not affected.


Upgraded, or new installs of version, are unable to download access logs from FTP servers. A zero window size is reported on the IP layer of the FTP stack.

Steps to duplicate:
1: Install, or upgrade to Reporter 78536
2: Create/Configure a database.
3: Configure log source to FTP source. 

Result: Reporter will start processing remote logs, but never quite stop it's status of 'processing logs'.  Running a sniffer trace (PCAP) will show the FTP connection drop eventually after a "0 window space" being advertised from Reporter on the ISO IP layer.


Problem has been reported to Bluecoat Engineering.


If you see this problem please log a support request, and report this article number.


Install versions or

Bug Number
InQuira Doc IdTFA82

Article Feedback

Hide Properties
First Published      10/01/2014
Last Modified      10/01/2014
Last Published      10/01/2014
Article Audience
Product      Reporter 9.3
Topic      Reporting
Article Number      000007657
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