Hi there,
With you’re getting problems trying to open a SFTP connection over a non standard SSH port, such as 220, you can use -o args to pass port number, like this:
[bash]sftp -oPort=220 user.name@yourserver.com[/bash]
In -o argument, you can group all extra parameters for connection. If you want, you can see docs at:
http://linux.die.net/man/1/sftp