Rules order showed in console window and may be changed with Up and Down buttons.

If rules count is 0 - all packets will be allowed.

WARNING: If rules count > 0 and rule to allow packets not exists - all traffic will be DENIED!, and console can not to connect to the server from other host. In this case you can connect to the server with 127.0.0.1 or "localhost" address or you can stop service, remove file "netcom.service.stg" (this is configuration file) and than start service (in this case you will lose all settings!). To exclude this situation you must create first rule, that allow from ALL to ALL. This rule must stay last in list of rules.