SSH Server Key ≠ FTPS (SSL/TLS) Server Certificate

From time to time our users ask how to use their X.509 (SSL/TLS) certificate for SFTP.

The one-line answer is: it’s not possible. But let’s dig into the topic and explain why, and above all how to implement server certificate and keys correctly.

First of all it is important to identify which protocol we intend to use, and what are its peculiarities: Continue reading