Predefined Firewall Policy Rules Predefined firewall policy rules define access to the main services necessary for the operating system where ReaSoft Network Firewall is installed to run normally. Predefined firewall policy rules cannot be deleted. You can either disable the rule you do not need, or edit some of its properties. Predefined firewall policy rules always determine access for the ReaSoft Network Firewall computer so you can change their source or destination only if it is different from Local Host object.

Predefined firewall policy rules are always applied before User-defined firewall rules. That is why you should disable a Predefined firewall rule if you need to redefine it by one of User-defined firewall rules.