Knowing how to set up and use terminal services allows the administrator to easily manage servers and remote users. From one system the administrator can manage multiple servers.

LinuxCBT SELinux Edition is unparalleled in content, depth and expertise. It entails 11-hours, or over 1-day of classroom training. LinuxCBT SELinux Edition prepares you or your organization for successfully securing GNU/Linux & Open Source-based solutions. As a by-product, many of the covered concepts, utilities and tricks are applicable to heterogeneous computing environments, ensuring your coverage of the fundamentals of securing corporate infrastructures.

Practical Guide to Fedora and Red Hat Enterprise Linux, A (5th Edition)
Publisher: Prentice Hall | 2010 | ISBN: 0137060882 | Pages: 1224 | PDF | 10,52 MB

This book is designed and organized so you can get the most out of it in the shortest amount of time. You do not have to read this book straight through in page order. Once you are comfortable using Linux, you can use this book as a reference: Look up a topic of interest in the table of contents or index and read about it. Or think of the book as a catalog of Linux topics: Flip through the pages until a topic catches your eye. The book includes many pointers to Web sites where you can get additional information: Consider the Internet an extension of this book.

Teaches the fundamentals to administer any one of four key UNIX-based systems: Red Hat Linux, Solaris, HP-UX, and Apple's MAC OS . Guaranteed UNIX system administration competency in just 24 one-hour lessons. Highlights differences among the different UNIXes and explains to the reader how to avoid potential problems. Once finished with this book, readers will be able to Log in to any UNIX system and use standard UNIX tools to learn about the state of that system, diagnose Basic problems, and maintain the system. In the wake of the highly successful Sams Teach Yourself UNIX in 24 Hours, this book focuses on the additional UNIX commands that an advanced user or beginning system administrator needs to know in order to administer and maintain a UNIX system. The book includes coverage of the key UNIX variations: Red Hat Linux, Solaris, HP-UX, and Apple's MAC OS X environment. The book will not be a comprehensive solution to all problems facing new system administrators, but instead is a tutorial introduction to the process of learning about and maintaining a running UNIX server. Dave Taylor is an expert on a broad array of Computer and networking technology, with over twenty years of industry experience. The creator of The Internet Mall and iTrack, he has also worked at HP's Palo Alto Research Labs and helped publish SunWorld magazine. He's written the best-selling Sams Teach Yourself UNIX in 24 Hours and Creating Cool HTML 4 Web Pages from Hungry Minds. He has a Bachelor's degree in Computer Science (UCSD), a Master's in Educational Computing (Purdue), and he is halfway through an MBA program

Recientemente se ha parcheado una vulnerabilidad en el kernel Linux, rama 2.6, que podría permitir a un atacante elevar privilegios y ejecutar código arbitrario con permisos de root.

La vulnerabilidad ha sido descubierta por Rafal Wojtczuk de Invisible Things Labs, la empresa de la conocida investigadora Joanna Rutkowska. Rafal descubrió el bug mientras estaba trabajando en la virtualización de la interfaz de usuario del sistema operativo Qubes.

Qubes es el proyecto más ambicioso de Rutkowska, un sistema operativo que permite virtualizar procesos independientemente.

Según Rutkowska el bug descubierto podría haber estado ya presente desde la introducción de la rama 2.6 a finales de 2003. Aunque en un primer momento los investigadores reportaron el error a los desarrolladores del servidor X (X.org) finalmente se derivó a los mantenedores del kernel. Esto fue debido a que no se trataba de un fallo inherente al servidor X sino a la forma en la que el kernel maneja la memoria en determinadas circunstancias.

Attacks to network infrastructure affect large portions of the Internet at a time and create large amounts of service disruption, due to breaches such as IP spoofing, routing table poisoning and routing loops. Daily operations around the world highly depend on the availability and reliability of the Internet, which makes the security of this infrastructure a top priority issue in the field.

Network Infrastructure Security is a book that bridges the gap between the study of the traffic flow of networks and the study of the actual network configuration. This book makes effective use of examples and figures to illustrate network infrastructure attacks from a theoretical point of view. The book includes conceptual examples that show how network attacks can be run, along with appropriate countermeasures and solutions.

Paperback: 640 pages
Publisher: Wiley; 1 edition (January 31, 2003)
Language: English
ISBN-10: 0471218219
ISBN-13: 978-0471218210

Book Description
* Provides readers with end-to-end shell scripts that can be used to automate repetitive tasks and solve real-world system administration problems
* Targets the specific command structure for four popular UNIX systems: Solaris, Linux, AIX, and HP-UX
* Illustrates dozens of example tasks, presenting the proper command syntax and analyzing the performance gain or loss using various control structure techniques
* Web site includes all the shell scripts used in the book

Synopsis
Provides readers with end--to--end shell scripts that can be used to automate repetitive tasks and solve real--world system administration problems Targets the specific command structure for four popular UNIX systems: Solaris, Linux, AIX, and HP--UX Illustrates dozens of example tasks, presenting the proper command syntax and analyzing the performance gain or loss using various control structure techniques Web site includes all the shell scripts used in the book

Este curso será útil sobre todo a quienes están dando sus primeros pasos en el mundo del software libre. El objetivo principal es proporcionar una serie de explicaciones sencillas y prácticas, de tal modo que cualquiera, sin grandes conocimientos de informática, pueda convertirse en usuario de GNU/Linux y aprovechar todas las ventajas que ofrecen los sistemas libres. No obstante si el vocabulario le resulta especialmente complicado puede consultar nuestro glosario y si la explicaciones son demasiado simples, puede ampliarlas con el conjunto de enlaces que le iremos sugiriendo. Casi toda la información aquí contenida se encuentra dispersa en Internet, por nuestra parte hemos procurado sintetizarla y estructurarla de modo que cuando necesite saber algo pueda tenerlo siempre a mano.

GNU-Linux is the ultimate hacker’s playground. It’s a toy for the imagination, not unlike a box of blocks or a bag of clay. Whether someone is an artist or a scientist, the possibilities are endless. Anything that you want to try to do and build and make with a computer is subject only to your creativity. This is why so many people are interested in Linux.
Many call it Linux instead of GNU-Linux, its full name—much the same way you’d call a friend by a nickname. Perhaps this is due to the intimacy that you can achieve with this operating system through its source code. Or from the experience of being part of a special community. Whatever it is though, everyone can benefit from communicating with a machine that is honestly attributable to the transparency and openness of Linux.
Although not the dominant operating system on the Internet, Linux is quite prevalent, considering that the overwhelming majority of servers running web services, email services, and name services all depend on other open-source code that works with Linux.
And this is where the trouble begins. Can something so open be properly secured? The difficulty begins when you need secure it. How do you secure something like this, with its collectively designed hosting components that are built, rebuilt, and reconfigured by whim and can differ from machine to machine? You will seldom find two identical systems. How then can you approach the possibility of providing security for all of them?
This edition of Hacking Exposed Linux is based on the work of ISECOM, an open security research organization with the mission to “Make sense of security.” ISECOM has thousands of members worldwide and provides extensive methodologies and frameworks in regards to security, safety, and privacy. ISECOM uses open collaboration and extensive peer review to obtain the highest possible quality research—which is also how this edition was developed. Many security enthusiasts and professionals collaborated to create a book that is factual, practical, and really captures the spirit of Linux. Only in this way can you expect to find the means of securing Linux in all of its many forms.

Windows Server 2008 R2 is the latest release of the Windows Server operating system. Over the years, it has evolved quite dramatically from the early days of Windows NT Server, Windows 2000, Windows 2003, or even Windows 2008. With the release of Windows Server 2008 R2, Microsoft again has introduced a number of new technologies intended to help IT professionals improve their ability to provide network services to the clients they serve