Firewall issues are important to deal with right away because of the critical nature of this security device. These devices determine what traffic is allowed in or out of a network and are primary in preventing unauthorized access. One question we get is why support is no longer available for a particular model. As with all things in technology, there is a finite life cycle for firewalls. Typically security devices like firewalls are supported for many years and there is usually a very orderly process to ending support.