This is quite useless to be honest - Yes it keeps the script kiddies away that only scan for standard ports , but if someone really wants to find that port - They will. A more efficent way to "hide" ports like SSH, FTP, SFTP and so on is to use a "Port knocking" technique. For example you have to "knock" on port Y to enable port X. This is way more efficent that just changing the port. with this you don't even have to change the standard ports. Because nobody will know which port you're knocking on to open the door,
