Network geeks among you may remember my article, “Linux Socket Filter: Sniffing Bytes over the Network”, in the June 2001 issue of LJ, regarding the use of the packet filter built inside the Linux ...

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 ...

“[A] person of ordinary skill would have understood that in both the ‘713 patent and Sourcefire, the relevant data is located in the first packet of the message . . . [and] would have been ...

We conducted testing of only one URL per Web host based on our background knowledge, reinforced by subsequent testing, that when the default page of a site was filtered, the entirety of that site was ...

I am currently running a USB ADSL (static IP I beleive - 62.xx.xx.xx) service to other PCs on the network via Winroute Pro running on windows 2K advanced server. (ADSL to Server to Switch to 3 PCs - ...

With cybercrime taking the enterprise ecosystem by storm, the issue of securing a network infrastructure along with restricting employee access to unwanted internet resources is a top-of-mind priority ...

Filters can permit or deny virtually any kind of traffic – up to a point. Here are some basic dos and don’ts for filter usage. Filters can permit or deny virtually any kind of traffic – up to a point.

Every self-respecting Linux guru should be familiar with firewalls and how to install and configure them. With this in mind, Linux gurus also should be curious about how firewalls function and how to ...