How can I change the default listening port for vino on the command line?

http://ift.tt/1iZHv9S

I have recently loaded Linux Mint 17 XFCE on a headless PC. I need to change the vino remote port from 5900 to 5905 to allow remote access on the internet. dconf tools no longer has that option. Is there a way to change the default listening port from the command line? Or is there another tool available?

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