SolarWinds Firewall Security Manager (FSM) is a great solution, offered by an excellent and well-respected company. It leverages more than 120 customizable,out-of-the-box checks based on industry standards, including NSA, NIST, SANS, CIS, and CIS. It ensures the right traffic gets through and the wrong traffic is kept out. It also identifies network service objects that are not referenced by any ACL or NAT rules and candidates for removal from the configuration.
Source: https://thehackernews.com/2014/04/optimizing-network-security-with.html