Overview The <ssl> element specifies the FTP over Secure Sockets Layer (SSL) settings for the FTP service; FTP over SSL was first introduced for IIS 7 in FTP 7.0. Unlike using HTTP over SSL, which requires a separate port and connection for secure (HTTPS) communication, secure FTP communication occurs on the same port as non-secure communication. FTP 7 supports two different forms of FTP over SSL:
![FTP over SSL <ssl>](https://cdn-ak-scissors.b.st-hatena.com/image/square/d6e4cb632c7025e9f5e05fd314fbf6dcd6144e8d/height=288;version=1;width=512/https%3A%2F%2Flearn.microsoft.com%2Fen-us%2Fmedia%2Fopen-graph-image.png)