Its now possible to define port range at 'Allow extern service from given local network' instead of a single port.

conf/main_ipv4.conf.sample

@@ -378,9 +378,11 @@ allow_local_if_to_ext_net=""
 # -
 # - All traffic from the given (local) network to the given (extern) service is allowed
 # -
+# - It's possible to give a port range. use the hyphen as the connecting character, like '3306-3308'
+# -
 # - Example:
 # -   allow_local_net_to_ext_service="192.168.63.0/24:83.223.86.98:3306:tcp
-# -                                   192.168.64.0/24:83.223.86.98:3306:tcp"
+# -                                   192.168.64.0/24:83.223.86.98:3306-3308:tcp"
 # -
 # - Blank separated list
 # -