The most valuable is helping us determine where our rules are too permissive. Based on previous human review of our rules, they are very cursory. We know why we do something, but we don't get into the details of whether the rule is nice and tight. What Firewall Analyzer lets us do is understand the risks presented by our rules. The tool does a calculation of all the traffic that could be allowed and we can match that to whether it should be allowed.
