ProFTPd: Enabling/Disabling TLS Based On User Or Group

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FTP is a very insecure protocol because all passwords and all data are transferred in clear text. By using TLS, the whole communication can be encrypted, thus making FTP much more secure. While this is a good thing, not all FTP clients support TLS. This article explains how to enable or disable TLS in ProFTPd based on the FTP user or group.