Send kepp alive request via SSH connection

[lonestone]

I am using filezilla in my daliy work, it works fine, but is seams that do not support Send kepp alive request via SSH connection, even though checked the options in settings window. When I return back to use it after long time work, the connection has timed out, but it still send such as "ls" command, I must cancel all opertions and refresh again to reconnect the server.