Le 30/06/15 17:52, Michael Benovich a écrit : > Hi, > > We have been running ftpserver 1.0.6 in a production environment for > several years. Last week we encountered an issue that we have not > encountered before. Hmmm. > > We began to see intermittent failures when trying to enter passive mode. A > review of our logs showed multiple errors (sample trace below) with the > warning "Failed to open passive data connection... (Cannot find an > available passive port)". Our configuration includes a passive port range > of 800 ports, and based on our internal metrics and "netstat" output, we do > not believe we were using anywhere near this many ports at the time of > these errors. Restarting our java application resolved the issue.
Have you changed the Java version you are using ? Or have you upgraded your OS ? Or have you added some firewalls ?