public static String getDefaultSecret() {
        return JiveGlobals.getProperty("xmpp.component.defaultSecret");
    }
Returns the default secret key to use for those external components that don't have an
individual configuration.

@return the default secret key to use for those external components that don't have an
        individual configuration.
xmppserver/src/main/java/org/jivesoftware/openfire/component/ExternalComponentManager.java