Language Selection

English French German Italian Portuguese Spanish

Book Review: Designing and Implementing Linux Firewalls and QoS using netfilter, iproute2, NAT, and L7-filter

Filed under
Reviews

As is reminiscent of many of the books written by authors for Packt Publishing, the first chapter begins with descriptions and re-introductions to many of the basic networking concepts. These include the OSI model, subnetting, supernetting, and a brief overview of the routing protocols. Chapter 2 discusses the need for network security and how it applies to each of the layers of the OSI model.

There are complex and simple firewalls. They can be as simple or as in depth as one is willing to put the time and effort into learning and configuring them. The simple firewalls being to just allow or drop packets based on protocol or source or destination IP. The complex being that which deals with QoS (Quality of Service) or the L7 packet classification filter.

Full Story.

More in Tux Machines

LLVM Clang 3.7 vs. GCC Compiler Benchmarks On Linux

Originally I was also going to feature some OpenMP benchmarks in this compiler comparison since LLVM/Clang 3.7 now has OpenMP 3.1 support, but with these tests and using the latest LLVM OpenMP library, I was still running into some issues even when setting the appropriate compiler flag. I'm still investigating the issue so for now all of the tests in this article are not using OpenMP. As a side note, daily LLVM/Clang SVN benchmarks using the daily LLVM APT snapshot repository continue to be done in a fully-automated manner each morning on multiple systems over at LinuxBenchmarking.com. Read more

DebEX KDE Is a Pure Debian 8.1 Based Distro with Linux Kernel 4.1.3 and KDE Plasma 5

Arne Exton, the creator of numerous GNU/Linux and Android-x86-based distributions, was more than happy to inform us earlier today about the immediate availability for download of a new build for its DebEX KDE edition distro. Read more

Midori 0.5.11 Open-Source Web Browser Adds Support for Client Side Decorations

Christian Dywan has announced the immediate availability for download of the eleventh maintenance release of the Midori 0.5 open-source web browser used by default in numerous lightweight GNU/Linux distributions, including elementary OS. Read more

Pro tip: Find business phone numbers faster in Android Lollipop

Say you're in a hurry to phone a local business to either order a pizza, find out their hours, reserve a table... or whatever reason you might need quick access to that business's front desk. In the old days of Android KitKat, you'd have to do a search for the business from Chrome (or Google Now), locate a phone number listed for the business, and then tap the associated number to place the call. Android Lollipop has made that process quite a bit more efficient. Read more