Added Suspicious Entropy alert (#6563)

scripts/lua/modules/alert_definitions/flow/alert_ndpi_suspicious_entropy.lua

@@ -0,0 +1,45 @@
+--
+-- (C) 2019-22 - ntop.org
+--
+
+-- ##############################################
+
+local flow_alert_keys = require "flow_alert_keys"
+-- Import the classes library.
+local classes = require "classes"
+-- Make sure to import the Superclass!
+local alert = require "alert"
+
+-- ##############################################
+
+local alert_ndpi_suspicious_entropy = classes.class(alert)
+
+-- ##############################################
+
+alert_ndpi_suspicious_entropy.meta = {
+   alert_key  = flow_alert_keys.flow_alert_ndpi_suspicious_entropy,
+   i18n_title = "flow_risk.ndpi_suspicious_entropy",
+   icon = "fas fa-fw fa-exclamation",
+
+   has_victim = true,
+   has_attacker = true,
+}
+
+-- ##############################################
+
+-- @brief Prepare an alert table used to generate the alert
+-- @return A table with the alert built
+function alert_ndpi_suspicious_entropy:init()
+   -- Call the parent constructor
+   self.super:init()
+end
+
+-- #######################################################
+
+function alert_ndpi_suspicious_entropy.format(ifid, alert, alert_type_params)
+   return
+end
+
+-- #######################################################
+
+return alert_ndpi_suspicious_entropy