You need to create FTP sites to upload (publish) feeds. You can specify the following site properties:
Name - name of the site that is shown in the FTP site list and the Publish dialog
Host - server domain name or IP address
Path - path of a directory on your server where feeds will be uploaded to. The path can be relative to a root folder ("absolute" path) like /user/feeds, or relative to a default login directory (e.g. feeds).
Port - FTP port. In most cases you need to use the default port (21).
Username - username used to access the FTP server. You can omit the username if you use anonymous login.
Password - password for the specified username
Passive FTP mode - this option may be useful if you are behind a firewall or proxy