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 ...

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 ...

VPNs encrypt everything, but proxies offer speed, flexibility, and unique advantages many people overlook. We explain how ...

Consider the venerable Web proxy—back when the Internet was new to most of us, setting up a Web proxy was a convenient way to grant users of an otherwise non-Internet-connected network access to the ...

Community driven content discussing all aspects of software development from DevOps to design patterns. Web clients should never hit an application server directly. Instead, all web-based requests ...

I've got a Cisco ASA firewall (firewall.example.com) and an Outlook Web Access proxy in the ASA's DMZ (owa.example.com). The ASA has a publicly facing IP address that is translated to the private ...

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 ...

If you're upgrading your firewall, or installing one on your network for the first time, you'll discover that firewall technology has changed a lot in the last several years. How do you select one ...

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 ...