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If you've ever wondered how Linux carries out the complicated tasks assigned to it by the IP protocols -- or if you just want to learn about modern networking through real-life examples -- Understanding Linux Network Internals is for you.
Like the popular O'Reilly book, Understanding the Linux Kernel, this book clearly explains the underlying concepts and teaches you how to follow the actual C code that implements it. Although some background in the TCP/IP protocols is helpful, you can learn a great deal from this text about the protocols themselves and their uses. And if you already have a base knowledge of C, you can use the book's code walkthroughs to figure out exactly what this sophisticated part of the Linux kernel is doing.
Part of the difficulty in understanding networks -- and implementing them -- is that the tasks are broken up and performed at many different times by different pieces of code. One of the strengths of this book is to integrate the pieces and reveal the relationships between far-flung functions and data structures. Understanding Linux Network Internals is both a big-picture discussion and a no-nonsense guide to the details of Linux networking. Topics include:
* Key problems with networking* Network interface card (NIC) device drivers* System initialization* Layer 2 (link-layer) tasks and implementation* Layer 3 (IPv4) tasks and implementation* Neighbor infrastructure and protocols (ARP)* Bridging* Routing* ICMP
Author Christian Benvenuti, an operating system designer specializing in networking, explains much more than how Linux code works. He shows the purposes of major networking features and the trade-offs involved in choosing one solution over another. A large number of flowcharts and other diagrams enhance the book's understandability.
PGP is a free and widely available encryption program that lets you protect files and electronic mail. Written by Phil Zimmermann and released in 1991, PGP works on virtually every platform and has become very popular both in the U.S. and abroad. Because it uses state-of-the-art public key cryptography, PGP can be used to authenticate messages, as well as keep them secret. The ability to protect the secrecy and authenticity of messages is a vital part of being able to conduct business on the Internet. PGP: Pretty Good Privacy by Simson Garfinkel is both a readable technical user's guide and a fascinating behind-the-scenes look at cryptography and privacy. Part I, "PGP Overview," introduces PGP and cryptography. Part II, "Cryptography History and Policy," describes the history of PGP -- its personalities, legal battles, and other intrigues; it also provides background on the battles over public key cryptography patents and U.S. government export restrictions, and other aspects of the ongoing public debates about privacy and free speech. Part III, "Using PGP," describes how to use PGP: protecting files and email, creating and using keys, signing messages, certifying and distributing keys, and using key servers. Part IV, "Appendices," describes how to obtain PGP from Internet sites, how to install it on PCs, UNIX systems, and the Macintosh, and other background information. The book also contains a glossary, a bibliography, and a handy reference card that summarizes all of the PGP commands, environment variables, and configuration variables.
The most difficult part of building a server with FreeBSD, the Unix-like operating system, is arguably software installation and configuration. Finding the software is easy enough; getting everything up and running is another thing entirely. The only option for many people has been to hire a consultant.
Building a Server with FreeBSD 7 is for those of us who prefer to build our own server. If you're a small business owner looking for a reliable email server, a curious Windows administrator, or if you just want to put that old computer in the closet to work, you'll learn how to get things up and running quickly. Then, once you have a working system, you can experiment, extend, and customize as you please. You'll learn how to install FreeBSD, then how to install popular server applications with the ports collection. Each package is treated as an independent module, so you can dip into the book at any point to install just the packages you need, when you need them. The book's modules cover topics like:
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Praise Page for VMware vSphere and Virtual Infrastructure Security
i?{1/2}??Ii?{1/2}??ve known Edward for a while and he is very passionate about security and virtualization and this book represents his passion for both subjects. Security is one area that is often not paid enough attention to and in a virtual environment it is absolutely critical as many different security threats exist compared to physical environments. Edi?{1/2}??s latest book covers every area of virtualization security and is a must read for anyone who has virtualized their environment so they can understand the many threats that exist and how to protect themselves from them.i?{1/2}?? i?{1/2}??Eric Siebert, author of VMware® V13 Implementation and Administration, blogger for Tech Target, and owner of http://vsphere-land.com and vExpert 2009 i?{1/2}??This book is a comprehensive, in-depth review of security in virtualized environments using VMware Infrastructure and VMware vSphere. Edward reinforces the need to include security in every area of your virtualized environment as he thoroughly discusses the security implications present in your server hardware, storage, networking, virtual machines, and guest operating systems. Even without the focus on security, Edwardi?{1/2}??s book is a valuable reference work for the useful tidbits of knowledge hei?{1/2}??s gathered during his career. Highly recommended!i?{1/2}?? i?{1/2}??Scott Lowe, virtualization blogger, author, and VMware vExpert
(1)System Performance Tuning answers one of the most fundamental questions you can ask about your computer: How can I get it to do more work without buying more hardware? Performance tuning has taken on a new importance. It allows system administrators to make the best use of existing systems and minimize the purchase of new equipment. It is an essential skill for system administrators who face the problem of adapting the speed of a computer system to the speed requirements imposed by the real world. It requires a detailed understanding of the inner workings of the computer and its architecture. System Performance Tuning covers two distinct areas: performance tuning, or the art of increasing performance for a specific application, and capacity planning, or deciding what hardware best fulfills a given role. Underpinning both subjects is the science of computer architecture. This book focuses on the operating system, the underlying hardware, and their interactions.
(3)Be more productive and make your life easier. That's what LDAP System Administration is all about. System administrators often spend a great deal of time managing configuration information located on many different machines: usernames, passwords, printer configurations, email client configurations, and network filesystem configurations, to name a few. LDAPv3 provides tools for centralizing all of the configuration information and placing it under your control. Rather than maintaining several administrative databases (NIS, Active Directory, Samba, and NFS configuration files), you can make changes in only one place and have all your systems immediately "see" the updated information. If you want to be a master of your domain, LDAP System Administration will help you get up and running quickly regardless of which LDAP version you use. After reading this book, even with no previous LDAP experience, you'll be able to integrate a directory server into essential network services such as mail, DNS, HTTP, and SMB/CIFS.
* Covers electronic and wireless eavesdropping, computer surveillance, intelligence gathering, password cracking, keylogging, data duplication, black bag computer spy jobs, reconnaissance, risk assessment, legal issues, and advanced spying techniques used by the government
* Author shares easily-implemented countermeasures against spying to detect and defeat eavesdroppers and other hostile individuals
* Addresses legal issues, including the U.S. Patriot Act, legal spying in the workplace, and computer fraud crimes
* Companion Web site contains links to security tools and useful security information resources
Discover the powerful and cost saving new virtualization opportunities on the client side with VMware View 5! In VMware View 5: Building a Successful Virtual Desktop, leading virtualization consultant Paul O'Doherty teaches the essentials of View, bringing together critical information, deep insights, and best practices drawn from his extensive experience deploying virtual desktop technology in many of today's most demanding business environments. O'Doherty walks through every step of View, from the earliest planning phases through configuration, implementation, and management. He illuminates crucial considerations ranging from changes to end-user experience and support considerations through performance management. Readers will learn how to plan and smoothly stage virtual desktop infrastructure deployments, and avoid pitfalls associated with latency, scalability, storage, and networking. Using this books' proven techniques, virtualization professionals can achieve the full promise of virtualized desktops, dramatically improving system administration productivity while building environments that are more flexible and easier to manage.
