People have a tendency to just add rules to firewalls, but they don't go back and take rules away. Some of our customers have thousands of unused rules that have been sitting out there for over a year. In one report, FireMon tells us there are, say, 1,000 rules that can be taken out and it gives us the ability to disable those for a year and to track when we made our changes. After a year, we can go back and eliminate the rules, to bring the configuration down to an almost human-readable level. It also identifies risks in your environment and helps to prioritize fixes. It actually rates the risk level, meaning you look for the red and try to bring everything to green.
