In most organizations, the first task of a technical security professional is to establish perimeter defenses. This track teaches you how and provides unique, real-world, from the trenches knowledge that will help you know what works and what doesn't. These completely updated courses fill the inevitable holes in knowledge so that the professional can be more confident of doing all that needs to be done in this essential area. Perimeters inevitably disturb network traffic.
Misconfigured firewalls can be the perfect security filter where nothing gets in or out.
Students who are diligent and apply themselves to learn this material will be equipped to troubleshoot firewalls and VPNs with free tools like tcpdump for UNIX and Windump for Windows. Throughout the class, key concepts are illustrated with tcpdump network traces. We are all dependent on firewalls and other perimeter protection systems to protect our sites. It is virtually impossible to secure all the systems in a facility and keep them secured, so we turn to perimeter defenses. Considering how important this protection mechanism is, it is amazing that we treat firewalls as magic black boxes.