Installing NVidia Graphics card drivers

                The commercially supported proprietary graphics drivers for NVidia graphics cards are not included with the Red Hat distribution. Only a basic driver is available. (Good enough for the 2-D world) The NVidia drivers are libraries and loadable modules which are tightly integrated with the kernel for ultimate OpenGL, 3D and DRI integration and performance.

Creating a boot floppy for Linux Installation

         This is only necessary if you can not boot from the CD-ROM.
 

Lilo, Grub and boot loaders

                    Lilo is the Linux bootstrap loader used by the Red Hat distribution up to and including version 7.1. Red Hat version 7.2 defaults to the use of Grub as the default boot loader. Grub supports a password that controls access to a Grub shell.

Why should we use or switch to Linux?

             Linux is more than a hip buzzword in computing. It is more than the latest fad. It was modeled on the Unix operating system first developed by Dennis Ritchie and Ken Thompson at AT&T. Unix was developed to run the largest network in world, the AT&T telephone system, and it did. The Unix operating system was designed to be scalable, reliable, modular, secure and portable with network extensibility.

Kernel space: Ticket spinlocks

                Spinlocks are the lowest-level mutual exclusion mechanism in the Linux kernel. As such, they have a great deal of influence over the safety and performance of the kernel, so it is not surprising that a great deal of optimization effort has gone into the various (architecture-specific) spinlock implementations. That does not mean that all of the work has been done, though; a patch merged for 2.6.25 shows that there is always more which can be done.

John the Ripper Tutorial

John the Ripper may be simple for many geeks to use, but newbies and geeks in training may find it difficult to do exactly what they want. This tutorial is aimed at them.
 

Radius Server Load balancing

                As of version 1.1.0, FreeRADIUS supports load balancing in module sections. Please read about configurable Fail-over for a more complete description of module sections.

                The short summary is that you can use a "load-balance" section in any place where a module name may be used. The semantics of the "load-balance" section are that one of the modules in the section will be chosen at random, evenly spread over the modules in the list.