In my last column, I sang the praises of application-layer proxy firewalls and introduced Balazs Scheidler's Zorp firewall suite, available in both commercial and free-of-charge versions. This column ...

Microsoft has made available a preview of its upcoming cloud-based Web application proxy service based on Active Directory and Windows Server that seeks to better supporting remote access securely in ...

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 ...

Touted as "the open source firewall," you'd expect T.REX Firewall to be completely open source. But for the latest release of the product (version 2), no source is available. The firewall itself is a ...

Learn how to keep your network secure without slowing it down or causing latency. Understand everything from unified threat management (UTM) and proxys to purchasing advice and firewall placement.

This chapter introduces the reader to firewall load-balancing (FWLB) concepts, technology, and designs. We will talk about motivations behind FWLB solutions, different types of firewalls, and how to ...

The use of a multi-layer dual firewall topology is relatively new in network security, but it is rapidly gaining in popularity. In many respects, a dual firewall topology is similar to that of an ...

John Breeden II is an award-winning reviewer and public speaker with 20 years of experience covering technology. Government agencies have always been in the crosshairs of cyberattackers. In fact, ...

What is firewall and what are its benefits is a question that is often asked by companies. A firewall is a computer network security device that limits internet traffic entering, leaving, and moving ...