Rule hit count is the number of times a firewall rule matches live traffic. It is a simple metric, but it turns policy from something static into something measurable. In stateful firewalls, a hit count can show whether a rule is actively protecting a flow, rarely used, or never reached because another rule takes precedence.
For defenders, this matters because unused or misordered rules create security drift. A zero-hit rule may be obsolete, while an unexpectedly busy rule can reveal a broad exception, noisy application behavior, or a control that needs tightening. In real operations, hit counts help teams prioritize cleanup, validate segmentation, and reduce dependence on manual log review. They do not prove a rule is correct, but they provide evidence for auditing and troubleshooting, making it easier to keep firewall policy aligned with actual network behavior.