Daniel J Barrett – författare

Are you serious about network security? Then check out SSH, the Secure Shell, which provides key-based authentication and transparent encryption for your network connections. It's reliable, robust, and reasonably easy to use, and both free and commercial implementations are widely available for most operating systems. While it doesn't solve every privacy and security problem, SSH eliminates several of them very effectively. Everything you want to know about SSH is in our second edition of SSH, The Secure Shell: The Definitive Guide. This updated book thoroughly covers the latest SSH-2 protocol for system administrators and end users interested in using this increasingly popular TCP/IP-based solution. How does it work? Whenever data is sent to the network, SSH automatically encrypts it. When data reaches its intended recipient, SSH decrypts it. The result is "transparent" encryption-users can work normally, unaware that their communications are already encrypted. SSH supports secure file transfer between computers, secure remote logins, and a unique "tunneling" capability that adds encryption to otherwise insecure network applications.With SSH, users can freely navigate the Internet, and system administrators can secure their networks or perform remote administration. Written for a wide, technical audience, SSH, The Secure Shell: The Definitive Guide covers several implementations of SSH for different operating systems and computing environments. Whether you're an individual running Linux machines at home, a corporate network administrator with thousands of users, or a PC/Mac owner who just wants a secure way to telnet or transfer files between machines, our indispensable guide has you covered. It starts with simple installation and use of SSH, and works its way to in-depth case studies on large, sensitive computer networks. No matter where or how you're shipping information, SSH, The Secure Shell: The Definitive Guide will show you how to do it securely.

Computer security is an ongoing process, a relentless contest between system administrators and intruders. A good administrator needs to stay one step ahead of any adversaries, which often involves a continuing process of education. If you're grounded in the basics of security, however, you won't necessarily want a complete treatise on the subject each time you pick up a book. Sometimes you want to get straight to the point. That's exactly what the new "Linux Security Cookbook" does. Rather than provide a total security solution for Linux computers, the authors present a series of easy-to-follow recipes-short, focused pieces of code that administrators can use to improve security and perform common tasks securely. The book includes real solutions to a wide range of targeted problems, such as sending encrypted email within Emacs, restricting access to network services at particular times of day, firewalling a webserver, preventing IP spoofing, setting up key-based SSH authentication, and much more. With over 150 ready-to-use scripts and configuration files, this unique book helps administrators secure their systems without having to look up specific syntax.The book begins with recipes devised to establish a secure system, then moves on to secure day-to-day practices, and concludes with techniques to help your system stay secure. Some of the "recipes" you'll find in this book are: controlling access to your system from firewalls down to individual services, using iptables, ipchains, xinetd, inetd, and more; monitoring your network with tcpdump, dsniff, netstat, and other tools; protecting network connections with Secure Shell (SSH) and stunnel; safeguarding email sessions with Secure Sockets Layer (SSL); encrypting files and email messages with GnuPG; and probing your own security with password crackers, nmap, and handy scripts.

'A good book! It's a nice overview of wiki editing and administration, with pointers to handy extensions and further online documentation' - Brion Vibber, Chief Technical Officer, Wikimedia Foundation. 'This book is filled with practical knowledge based on experience. It's not just spouting some party line' - Rob Church, a developer of MediaWiki. MediaWiki is the world's most popular wiki platform, the software that runs Wikipedia and thousands of other websites. Though it appears simple to use at first glance, MediaWiki has extraordinarily powerful and deep capabilities for managing and organizing knowledge. In corporate environments, MediaWiki can transform the way teams write and collaborate. This comprehensive book covers MediaWiki's rich (and sometimes subtle) features, helping you become a wiki expert in no time.You'll learn how to: find your way around by effective searching and browsing; create and edit articles, categories, and user preferences; use advanced features for authors, such as templates, dynamic lists, logical parser functions, and RSS, to organize and maintain large numbers of articles; install and run your own wiki, and configure its look and behavior; and, develop custom wiki features, called extensions, with the PHP programming language and MySQL database.This book also provides special guidance for creating successful corporate wikis. For beginners who want to create or work on collaborative, community-driven websites with this platform, "MediaWiki" is the essential one-stop guide. 'I was a MediaWiki newbie before reading this book. Now, many aspects of the platform that were murky before are crystal clear' - JP Vossen, author of O'Reilly's "Bash Cookbook".

Take your Linux skills to the next level! Whether you're a system administrator, software developer, site reliability engineer, or enthusiastic hobbyist, this practical, hands-on book will help you work faster, smarter, and more efficiently. You'll learn how to create and run complex commands that solve real business problems, process and retrieve information, and automate manual tasks.You'll also truly understand what happens behind the shell prompt, so no matter which commands you run, you can be more successful in everyday Linux use and more competitive on the job market.As you build intermediate to advanced command-line skills, you'll learn how to:Choose or construct commands that get your work done quicklyRun commands efficiently and navigate the Linux filesystem with easeBuild powerful, complex commands out of simpler onesTransform text files and query them like databases to achieve business goalsControl Linux point-and-click features from the command line

Today's software applications need more than a friendly interface and correct algorithms. They also need to be responsible: to be beneficial for society and not cause harm. In an era of AI chatbots, deep fake images and videos, social media bubbles, expanding privacy regulations, and a warming planet, it's more important than ever to practice responsible software engineering so your products earn your users' trust-and deserve it.Responsible Software Engineering gathers the wisdom of over 100 Google employees to help you anticipate the effects of your software on the world and its inhabitants. It features expert advice and practical case studies so you can build better applications that are more ready for real-world situations:Treating people more fairly, regardless of their beliefs, culture, skin tone, and other attributesOperating more safely, to reduce the risk of physical, psychological, or financial harmBetter protecting people's privacy, particularly when collecting personal informationIncorporating wisdom from the social sciences, law, ethics, and other fields that many engineers may be unfamiliar withReducing emissions of carbon dioxide (CO2), to address the risks of climate change

If you use Linux in your day-to-day work, then Linux Pocket Guide is the perfect on-the-job reference. This thoroughly updated 20th anniversary edition contains more than 200 Linux commands, including new commands for file handling, package management, version control, file format conversions, and more.In this concise guide, author Daniel Barrett provides the most useful Linux commands grouped by functionality. Whether you're a novice or an experienced user, this practical book is an ideal reference for the most important Linux commands.You'll learn:Essential concepts-commands, shells, users, and the filesystemFile commands-creating, organizing, manipulating, and processing files of all kindsSysAdmin basics-superusers, processes, user management, and software installationFilesystem maintenance-disks, RAID, logical volumes, backups, and moreNetworking commands-working with hosts, network connections, email, and the webGetting stuff done-everything from math to version control to graphics and audio

Every Mac user knows how to work with windows and icons, but there is a wonderful application behind the scenes - the Terminal - that provides tremendous additional power. With this handy guide, you'll learn valuable commands that remove limits and open doors that many Mac users don't know exist. Discover how to solve common tasks that are awkward or difficult in the Finder by opening the Terminal and typing a few commands. Among hundreds of tasks, you'll be able to: Log into your Mac from remote locations Search and modify files in powerful ways Kill programs that refuse to quit Set up scheduled jobs that run at particular days & times Let several people use one Mac at the same time Control system services