Industrial control firewall white list rule matching method and device and related equipment

The invention discloses an industrial control firewall white list rule matching method and device and related equipment. The method comprises the following steps: acquiring a white list rule, sorting fields in the white list rule, and acquiring gradient values of the fields; setting a first gradient field filtering rule and a non-first gradient field filtering rule according to the gradient value of the field; obtaining a to-be-matched message, performing primary filtering on the to-be-matched message by adopting a first gradient field filtering rule to obtain a filtered white list rule list, and performing secondary filtering on the filtered white list rule list by adopting a non-first gradient field filtering rule to obtain a target white list rule list; and according to the target white list rule list, performing rule judgment on the residual rule item number in the target white list rule list. According to the method, higher-efficiency matching is realized by utilizing the gradient of the white list rule,