The -tlsVerifyDepth option is used to define the verification depth, in other words the maximum permissible number of certificates between the FTP server certificate and the certificate which is known to the FTP client.
Here you must note the following:
If the value 1 (default) is specified as the maximum depth, the server certificate must have been signed directly by a Certificate Authority (CA) that the FTP client knows for it to be accepted.
If the maximum depth is exceeded, the connection is cleared, unless verification of the FTP server certificate has been disabled with -tlsVerifyServer NO (see "-tlsVerifyServer - Verify FTP server certificate (yes/no)").
Specifying the depth as 0 is meaningless. In this case only self-signed certificates would be permissible.
-tlsVerifyDepth |
<depth> |
<depth>
Maximum permissible number of certificates between the FTP server certificate and the certificate which is known to the FTP client (including the FTP server certificate).
Default: 1