Basic network architecture and construction is a good starting point when trying to understand how communication systems function, even though the topic is a bit dull. Architectures are typically based on a model showing how protocols and functions fit together. Historically, there have been many models used for this purpose, including, but not limited to, Systems Network Architecture (SNA-IBM)…
Social applications are, by default, applications with the potential to be used by many users at the same time. I know, the first word that comes to your mind is scalability, but that is just one of the challenges you must tackle, and possibly not the hardest. Your application needs to work for almost every user who decides to give it a try, from the perspectives of usability and user experienc…
The Essential Handbook of Internal Auditing contains the same format as the original handbook and includes chapters on Corporate Governance Perspectives, Managing Risk and Internal Controls. It is only after having addressed these three interrelated topics that we can really appreciate the internal audit role. There are chapters on professional standards, audit approaches, managing internal aud…
The first step in diagnosing a network problem is to collect information. This includes collecting information from your users as to the nature of the problems they are having, and it includes collecting data from your network. Your success will depend, in large part, on your efficiency in collecting this information and on the quality of the information you collect. This book is about tools yo…
AWS is not easy; it combines skills of several different (established) crafts. It is different from traditional systems administration, and it’s not just developing a piece of software. If you have practiced one or both of these skills, all you need is to be inquisitive and open to learning. Our background is in software engineering. We are computer scientists with extensive software engineer…
We begin to jump into the PHP code within this chapter. You will learn about PHP best coding practices when it comes to performance. You will learn about constructing a faster-running for loop, how to include files using the optimal PHP function, and, most importantly, how to use and install VLD, strace, and Xdebug. Once VLD and strace are installed, you will analyze Opcode, as well as the Apac…
This PhoneGap 4 cookbook is a practical guide to developing hybrid applications using PhoneGap or Cordova. The sample applications here are based on real-world use cases and are shown step by step. This book covers the standard workflow using the Cordova command-line interface, and the extension of hybrid applications using various Cordova plugins. It also covers the development of hybrid appl…
When Olaf Kirche joined the LDP in 1992, he wrote two small chapters on UUCP and smail, which he meant to contribute to the System Administrator’s Guide. Development of TCP/IP networking was just beginning, and when those “small chapters” started to grow, he wondered aloud whether it would be nice to have a Networking Guide. “Great!” everyone said. “Go for it!” So he went for it a…
To be able to define IoT, let's first look at how the term was coined. Kevin Ashton noted that most data on the Internet was at the time originally entered or captured into the system by human beings. From a system point of view, a human is nothing more than a slow, error-prone, and inefficient router of data that puts limits on quality and quantity of data available and sometimes even dares to…
Firewalls are a staple of almost every network in the world. The firewall protects nearly every network-based transaction that occurs, and even the end user understands its metaphoric name, meant to imply keeping out the bad stuff. But firewalls have had to change. Whether it’s the growth of networks or the growth of network usage, they have had to move beyond the simple devices that only req…
After you’ve spent some time in the networking field, you tend to notice that there is rarely a single way to do things, and in many cases, rarely a single, precise definition for terms. After all, often a network engineer’s best answer is “it depends.” Such is the case with enterprise routing, so let’s start off with a definition question: what is an enterprise network? Is it a large…
This book describes the jobs that I and other networking engineers have performed on client networks over the past few years. We are considered network warriors because of the way that we attack networking challenges and solve issues for our clients. Network warriors come from different backgrounds, including service provider routing, security, and the enterprise. They are experts on many diffe…
Albert Gelpi’s American Poetry after Modernism is a study of major poets of the postwar period from Robert Lowell and Adrienne Rich through the Language poets. He argues that what distinguishes American poetry from the British tradition is, paradoxically, the lack of a tradition; as a result, each poet has to ask fundamental questions about the role of the poet and the nature of the medium, h…
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-…
In this book, we'll build several projects that will get progressively more challenging. You should be able to build the first few projects in an afternoon. A finished product may take you a while longer, depending on how professional you want it to look. In order to build the first few projects in this book, you will need a few basic assembly skills and tools described as follows. The RF proje…
T he information security (InfoSec) profession got its start decades ago, but it consisted of few people, mostly in military and other secret orga- nizations. With the appearance of the Internet in the 1990s, organizations started to put information online, and the InfoSec profession became a little more popular. Fast‐forward to the mid 2010s, with its big security breaches as well as new law…
T he information security (InfoSec) profession got its start decades ago, but it consisted of few people, mostly in military and other secret orga- nizations. With the appearance of the Internet in the 1990s, organizations started to put information online, and the InfoSec profession became a little more popular. Fast‐forward to the mid 2010s, with its big security breaches as well as new law…
n times of crisis, we are forcefully reminded of the links between politics and international economic law.1 Indeed, the meltdown in world markets has refocused attention on how the fingerprints of the “visible hand” can be seen all over the institutions that underpin the rules of globalization. From trade and investment to finance, governments are under pressure to enforce, resist, and rew…