+`protection_synflood`: `<boolean>` ('default =' `0`)::
+
+Enable synflood protection
+
+`protection_synflood_burst`: `<integer>` ('default =' `1000`)::
+
+Synflood protection rate burst by ip src.
+
+`protection_synflood_rate`: `<integer>` ('default =' `200`)::
+
+Synflood protection rate syn/sec by ip src.
+
+`smurf_log_level`: `<alert | crit | debug | emerg | err | info | nolog | notice | warning>` ::