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. This article explains how to configure PureFTPd to accept TLS sessions on a CentOS 6.2 server.
March 23, 2012
How To Configure PureFTPd To Accept TLS Sessions On CentOS 6.2
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