Hopefully this primer on Stateful Packet-Filtering Firewalls and the Cisco PIX appliance has been helpful to you. This entry, along with my earlier entry is meant to focus your studies with regard to ...

Learn how firewalls have progressed from simple packet filtering to more sophisticated application-level filtering. Webopedia.com defines a firewall as “a system designed to prevent unauthorized ...

Network firewalls were created as the primary perimeter defense for most organizations, but since its creation the technology has spawned many iterations: proxy, stateful, Web app, next-generation ...

Firewalls monitor and regulate the data moving on and off your computer or network. They can keep criminals out while allowing legitimate network traffic in. Mac OS X comes with not one but two ...

The humble firewall has come a long way since the packet-filtering days of yore. The first firewalls were developed by the Digital Equipment Corporation (DEC) back in the late 1980s. These early ...

Understanding the stateful firewall vs stateless firewall distinction will help you decide on the best strategy for protecting your network. A stateful firewall keeps track of the state of network ...

When you hear of the term firewall, you might believe there is only a single type, but that is not the case. There are different types of firewalls, and luckily for you, we aim to explain them in this ...

Joel Snyder, Ph.D., is a senior IT consultant with 30 years of practice. An internationally recognized expert in the areas of security, messaging and networks, Dr. Snyder is a popular speaker and ...

When I started writing this column in autumn of 2000, I had the day job of firewall engineer. I enjoyed that type of work, but I was enough of a big-picture kind of guy to be aware that every year, ...

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