Changes

<td>'''21'''</td><td>'''FTP'''<td> '''File Transfer (Control)''' - See Above - '''Note:''' Traditionally FTP has two ports assigned (port 20 and port 21). Port 20 was originally conisidered the data transfer port, while port 21 was assigned to communicate control information. In modern implementations port 20 is now rarely used, with all communication taking place on port 21.</td>