When deciding on a firewall implementation, most Unix-savvy administrators have usually chosen to use ipfilter on OpenBSD for their combination of capabilities and stability, as the capabilities of ...

Version 2.6.12 of the Linux kernel is likely to include packet filtering that will work with IPv6, the latest version of the Internet Protocol. Netfilter/iptables, the firewall engine that is part of ...

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 ...

“[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 ...

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 it's true that external packet must first traverse my filtering rules, what interface will the packet arrive to my WinXP box from? By virtue of being redirected to an internal address does PF ...

Two months ago, we published Everything you need to know about IPv6, telling you the following about firewalling IPv6 in relationship to the Network Address Translation that is common in today's IPv4 ...

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 ...