The security tab includes the following options: Option Description Username Specify the user name required to access the MQTT server. Password Specify the password associated with the Username. Use secure protocol Select this option if you want to define SSL properties for the connection. This security protocol setting is used only on Kettle. It is not used on AEL Spark. SSL Properties ssl.contextProvider Specify the underlying JSSE provider. ssl.enabledCipherSuites Specify which ciphers are enabled. Values are dependent on the provider. ssl.keyManager Specify the algorithm that will be used to create a KeyManagerFactory object instead of using the default algorithm available in the platform. ssl.keyStore Specify the name of the file that contains the KeyStore object that you want the KeyManager to use. ssl.keyStorePassword Specify the password for the KeyStore object that you want the KeyManager to use. ssl.keyStoreProvider Specify the identifying name or string for the key store provider. ssl.keyStoreType Specify the identifying name or string for the type of key store. ssl.protocol Specify the type of SSL protocol to use. ssl.trustManager Specify the algorithm that will be used to create a TrustManagerFactory object, instead of using the default algorithm available in the platform. ssl.trustStore Specify the name of the file that contains the KeyStore object that you want the TrustManager to use. ssl.trustStorePassword Specify the password for the TrustStore object that you want the TrustManager to use. ssl.trustStoreProvider Specify the identifier or string for the trust store provider. ssl.trustStoreType Specify the type of KeyStore object that you want the TrustManager to use.