I faced this problem recently, when i had to monitor a service status on remote machine. I had a program in my local machine trying to access a remote port number. But unfortunately the port was blocked by the firewall.
You will see this error probably because the filezilla erver needs to support opening files in shared mode & it has a setting for it.
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Before going to the solution, just a note tutorial who doesn't know that youtube videos can be played in VLC media player.
Netcat is described as being a "feature-rich network debugging and exploration tool". It can be obtained from Source Forge, or it may already be available in your distribution.
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