This configuration allows the client to decide whether any part of the FTP session should be encrypted. There are several ways that this might be implemented depending on your business needs: controlChannelPolicy When you are using FTP 7, you are using Implicit SSL if you enable FTPS and you assign the FTP site to port 990.ĭepending on the security options that you configure in the controlChannelPolicy and dataChannelPolicy attributes, an FTP client may switch between secure and non-secure multiple times in a single Explicit FTPS session. In addition, even though Explicit FTPS allows the client to arbitrarily decide whether to use SSL, Implicit FTPS requires that the entire FTP session must be encrypted. With Implicit FTPS, an SSL handshake must be negotiated before any FTP commands can be sent by the client. Implicit FTPS: Implicit FTPS is an older form of FTP over SSL that is still supported by FTP 7.When you are using FTP 7, you are using Explicit SSL if you enable FTPS and you assign the FTP site to any port other than port 990. In a typical FTP request, an FTP client will connect to an FTP site over the control channel, and then the client can negotiate SSL/TLS with the server for either the control channel or the data channel. Explicit FTPS: By default, FTP sites and clients use port 21 for the control channel, and the server and client will negotiate secondary ports for data channel connections.
FTP 7 supports two different forms of FTP over SSL: 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. The 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.
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