Last but not least, make sure that you are communicating with business leaders and end users about any changes to your firewall rules. Getting input from the business can help make sure that your firewall configuration is meeting end users’ needs.
Having open lines of communication can also help users understand the multiple steps and risks involved when they make a request for a change. By working together, IT and the business side can help make sure they are meeting the dual goals of security and fast performance.
Firewall Articles Source: eSecurityPlanet