@LearnerAdmin    It is not clear to me what you are asking when you say "add NIFI CA in authorities".   Instructions on using the NiFi TLS toolkit can be found here: https://nifi.apache.org/docs/nifi-docs/html/toolkit-guide.html#tls_toolkit   Using the Client/Server Tls Toolkit operational mode covered here: https://nifi.apache.org/docs/nifi-docs/html/toolkit-guide.html#client-server Will give you the ability to create a running NiFi CA authority "server" which will sign your NiFi node certificates created using the "client" mode.   Thanks, Matt ... View more