The priority of a network packet rule is determined by its position in the list of network packet rules. The topmost network packet rule in the list of network packet rules has the highest priority.
Every manually created network packet rule is added to the end of the list of network packet rules and is of the lowest priority.
Firewall executes rules in the order in which they appear in the list of network packet rules, from top to bottom. According to each processed network packet rule that applies to a particular network connection, Firewall either allows or blocks network access to the address and port that are specified in the settings of this network connection.
To change the network packet rule priority:
This opens a list of default network packet rules that are set by Firewall.