@Ayaskant Das NiFi by default will use a user's SSL certificate if it is included by your browser during the connection to NiFi's URL. NiFi can be configured to use LDAP or Kerberos as alternate Authentication methods. Once configured, these alternate methods will be used only if a user does not pass a SSL certificate. Information about setting up LDAP or kerberos can be found in NiFo's Admin guide: https://nifi.apache.org/docs/nifi-docs/html/administration-guide.html#user-authentication Thanks, Matt ... View more

You need to configure NiFi to use a login identity provider such as LDAP or Kerberos, and then navigate to the secure URL of the NiFi web ui, for example https://localhost:8443/nifi. If you have a certificate in your browser and get prompted, make sure to decline otherwise it will use that to authenticate. There are many reasons covering how to configure LDAP or Kerberos: https://pierrevillard.com/2017/01/24/integration-of-nifi-with-ldap/ http://bryanbende.com/development/2016/08/31/apache-nifi-1.0.0-kerberos-authentication https://nifi.apache.org/docs/nifi-docs/html/administration-guide.html ... View more