A CompleteFTP site consists of a related group of protocols and port numbers - for example the default ports for FTP on port 21 and SFTP on port 22 make up the "Default site" (below). Sites have their own settings, including public keys and certificates. Every installation of CompleteFTP supports at least two sites - the 'Admin site' and the 'Default site'.
As described above, the "Default site" consists of a group of protocols on their standard port numbers - FTP/FTPS on port 21, and SSH/SCP/SFTP on port 22 (and optionally HTTP on port 80 and HTTPS on port 443). These are the port numbers and protocols most often used, and generally will not need to be modified, although the port numbers can be changed if required. In the Standard Edition and Professional Edition, the default site is configured via the Settings panel.
The "Admin site" is what the CompleteFTP manager connects to, to administer the server instance. By default it listens on port 14982 for FTP/FTPS, and port 14983 for SSH/SFTP. It does not matter which of these protocols the manager connects with to the Admin site. The Admin site cannot be deleted (the server could not be administered). Settings should be changed with care - if the port numbers are altered administrators must be informed of the changes. In the Standard Edition and Professional Edition, the Admin site is configured via the Admin Access panel. In the Enterprise Edition, the Admin site is displayed in Sites by checking the 'Show admin site' checkbox at the bottom left of the Sites panel.
The Enterprise Edition of CompleteFTP supports the creation and administration of multiple sites.