This documentation tests the notion that you can effectively test your defenses by trying to break into them. OSPF is a link-state routing protocol. Link-state routing protocols take the actual state of the network link into account when creating routing tables and calculating routing decisions. This means that factors like bandwidth and delay can be used when calculating a route's best path, instead of the traditional metric of hop count used by the distance-vector family of routing protocols. This documentation will intend to expose the weaknesses that are often ignored.
Firewalls are better than nothing most of the time.
They provide the only major line of defense for many networks, so please do not remove your firewall unless you have given this some serious thought. This evaluation defines the essential components of a comprehensive, systematic, context-driven information security risk evaluation.