Add FTPS section in accordance with #13

Author: SebastianPrehn

docs/sections/erda/networkdrive/ftps/filezilla/index.rst

@@ -0,0 +1,13 @@
+FileZilla
+=========
+
+FileZilla is a stand-alone FTP/FTPS/SFTP client available on all popular platforms.
+It includes a *synchronized browsing* feature, convenient for manually synchronizing folders between your computer(s) and ERDA.
+
+In FileZilla open the Site Manager e.g. from the File menu and create a New Site with the ERDA details using the automatic username and the password you entered on your FTPS Setup tab.
+
+First time you connect you are asked to verify the ERDA server fingerprint, which you can find on your ERDA FTPS Setup page.
+If you don't want to repeat this every time you can tick the *Always trust certificate in future sessions* box before you choose OK to connect.
+
+.. info::
+   Please note that the fingerprint changes occasionally so you may need to repeat this step some months later.

docs/sections/erda/networkdrive/ftps/index.rst

@@ -0,0 +1,15 @@
+FTPS
+====
+
+FTPS is another secure and efficient file transfer protocol built on top of the old FTP protocol, but with proper security added.
+It relies on the security mechanisms of TLS/SSL and it is supported by a number of clients on all popular platforms.
+As far as we know none of the major platforms integrate it natively in the general file manager, so you probably need to install a dedicated client to use it.
+
+You generally need to first open the *FTPS* tab on your Setup page at ERDA and configure how you want to authenticate to our FTPS server.
+Enter a password that you want to login with and click *Save FTPS Settings*.
+Please also note the login details including the automatic username shown there.
+
+.. info::
+   Our SFTP server is more thoroughly tested and allows the stronger public key authentication, but our FTPS server may deliver higher throughput, so feel free to use either in accordance with your needs.
+
+⏩️ :doc:`Setup FileZilla up (Windows/MacOS/Linux) </sections/erda/networkdrive/ftps/filezilla>`

docs/sections/erda/networkdrive/index.rst

@@ -63,9 +63,13 @@ You have several options for connecting ERDA as a network drive, but below is a
 ⏩️ :doc:`SSHFS with SFTP </sections/erda/networkdrive/sshfs/index>`
    SSHFS with SFTP is another popular option to access remote storage that uses the SSH File Transfer Protocol, and is the more robust, but more complex option.
 
+⏩️ :doc:`FTPS </sections/erda/networkdrive/ftps/index>`
+   FTPS is another secure and efficient file transfer protocol built on top of the old FTP protocol, but with proper security added.
+
 .. toctree::
    :maxdepth: 3
    :hidden:
 
    WebDAVS </sections/erda/networkdrive/webdavs/index>
    SSHFS with SFTP </sections/erda/networkdrive/sshfs/index>
+   FTPS </sections/erda/nerworkdrive/ftps/index>