GNS3. Emulowanie sieci komputerowych Cisco

Adam Józefiok

Wirtualne laboratorium sieci komputerowych czeka na Twoje projekty! Podstawy GNS3, czyli od czego zacząć pracę w programie Elementy sieciowe, czyli co z czym łączyć i co z tego wyjdzie Sieci, czyli jak zbudować sieć wirtualną i podłączyć ją do rzeczywistej Sieci komputerowe już dawno oplotły świat, lecz wciąż okazuje się, że potrzeba ich więcej i więcej. W każdej firmie, domu, warsztacie i kawiarni musi działać sieć — i to taka, która odpowie na potrzeby konkretnych użytkowników. Aby nauczyć się tworzyć takie sieci i łatwo testować ich przyszłe działanie, niezbędne jest dobre środowisko testowe, czyli GNS3. W tym programie możesz zbudować najróżniejsze sieci i przyjrzeć się ich działaniu bez konieczności zaplątywania się w kable. Dzięki temu możesz zabrać się za fizyczną budowę sieci dopiero wtedy, kiedy jej wirtualny odpowiednik zacznie spełniać Twoje cele. Jeśli chcesz nauczyć się obsługi programu GNS3 i zrozumieć, jak wygląda przepływ danych przez sieci komputerowe, a także rozpocząć przygotowania do egzaminu Cisco, sięgnij po tę książkę. Dowiesz się z niej, jak skonfigurować program, tworzyć wirtualne maszyny i routery oraz uruchamiać routing między nimi. Zobaczysz, do czego służy Wireshark i jak podglądać ruch między kluczowymi urządzeniami. Zadbasz także o bezpieczeństwo Twoich sieci, oraz odkryjesz, jak emulować środowisko technologii VOIP oraz urządzenia Juniper. I wreszcie sprawdzisz, jak Twoja wirtualna sieć działa po podłączeniu jej do sieci rzeczywistej! Siadaj i projektuj! Wprowadzenie do GNS3, pobieranie i instalacja programu oraz wstępna konfiguracja Tworzenie wirtualnych maszyn i używanie ich w GNS3 Tworzenie wirtualnego routera Wykorzystanie programu Wireshark w GNS3 Wykorzystanie GNS do emulacji urządzenia ASA Wykorzystanie GNS do VOIP Emulowanie urządzeń Juniper Dodatkowe funkcjonalności GNS3 Śledź tę sieć i sam ją pleć!

GNS3 Network Simulation Guide. From installation through to creating large scale simulations, this is the complete guide to GNS3 that will give you the know-how needed for Cisco certification. For networking professionals, it's a career-advancing tutorial

GNS3, Christopher J Welsh (USD)

GNS3 is an open-source Graphical Network Simulator used extensively by networking professionals to simulate networking devices such as Cisco, Juniper and Vyatta routers, along with Virtual PCs.GNS3 Network Simulation Guide gives you all the information you need to run a successful GNS3 simulation. You will be guided through the tricky installation pre-requisites and procedures involved in developing a simulated topology suitable for studying for Cisco CCIE Certification. We will also cover many useful tips and tricks which will help you make the most of your GNS3 simulator application.You will begin the GNS3 journey by ensuring that you have prepared your computer with any additional files required by GNS3, to set up the simulated environment needed for a successful installation process.Once GNS3 is installed, you will get to work creating a successful simulation including routers, Ethernet switches, Virtual PCs, and capture packets using Wireshark. Next, you will learn how to master GNS3's Graphical User Interface as well as the Command Console. The inner workings of GNS3 are described in depth so that you gain an appreciation of how UDP tunnels are used to tie the many components of GNS3 together.By following the clear examples and exercises in this guide, you will learn everything that you need to know about how to use GNS3 to prepare for certifications, as well as simulate real-world network scenarios.

GNU Octave Beginner's Guide. Become a proficient Octave user by learning this high-level scientific numerical tool from the ground up

Jesper Schmidt Hansen

Today, scientific computing and data analysis play an integral part in most scientific disciplines ranging from mathematics and biology to imaging processing and finance. With GNU Octave you have a highly flexible tool that can solve a vast number of such different problems as complex statistical analysis and dynamical system studies.The GNU Octave Beginner's Guide gives you an introduction that enables you to solve and analyze complicated numerical problems. The book is based on numerous concrete examples and at the end of each chapter you will find exercises to test your knowledge. It's easy to learn GNU Octave, with the GNU Octave Beginner's Guide to hand.Using real-world examples the GNU Octave Beginner's Guide will take you through the most important aspects of GNU Octave. This practical guide takes you from the basics where you are introduced to the interpreter to a more advanced level where you will learn how to build your own specialized and highly optimized GNU Octave toolbox package. The book starts by introducing you to work variables like vectors and matrices, demonstrating how to perform simple arithmetic operations on these objects before explaining how to use some of the simple functionality that comes with GNU Octave, including plotting. It then goes on to show you how to write new functionality into GNU Octave and how to make a toolbox package to solve your specific problem. Finally, it demonstrates how to optimize your code and link GNU Octave with C and C++ code enabling you to solve even the most computationally demanding tasks. After reading GNU Octave Beginner's Guide you will be able to use and tailor GNU Octave to solve most numerical problems and perform complicated data analysis with ease.

Gnucash 2.4 Small Business Accounting: Beginner's Guide. Manage your accounts with this desktop financial manager application

Ashok Ramachandran, Christian Stimming

Attention, small business owners! Stop tax-day stress. Stop procrastinating with a shoebox full of receipts. Stop reinventing the wheel with a spreadsheet. Stop making decisions simply on a hunch. Stop wasting money on software that is overkill. Start by downloading GnuCash and getting your accounts in order. Designed to be easy to use, yet powerful and flexible, GnuCash allows you to track bank accounts, income, and expenses. As quick and intuitive to use as a checkbook register, it is based on professional accounting principles to ensure balanced books and accurate reports. You can do it and Gnucash 2.4 Small Business Accounting Beginner's Guide will help you get up and running with maintaining your accounts.Gnucash 2.4 Small Business Accounting Beginner's Guide speaks business language, not accountant-speak, because it is written by a former small business owner. It guides you to use GnuCash from scratch with step-by-step tutorials without jargon, pointing out the gotchas to avoid with lots of tips. It will teach you to work on routine business transactions while migrating transaction data from other applications gradually. You will be able to keep on top of transactions and run reports after reading just three chapters!Beyond Chapter 3, it is up to you how far you want to go. Reconcile with your bank and credit card statements. Charge and pay sales tax. Do invoicing. Track payments due. Set up reminders for bills. Avoid stress at tax time. Print checks. Capture expenses using your mobile phone.Gnucash 2.4 Small Business Accounting Beginner's Guide gives you the power. Know your numbers. Make decisions with confidence. Drive your business to its full potential.

GNU/Linux Rapid Embedded Programming. Your one-stop solution to embedded programming on GNU/Linux

Rodolfo Giometti

Embedded computers have become very complex in the last few years and developers need to easily manage them by focusing on how to solve a problem without wasting time in finding supported peripherals or learning how to manage them. The main challenge with experienced embedded programmers and engineers is really how long it takes to turn an idea into reality, and we show you exactly how to do it. This book shows how to interact with external environments through specific peripherals used in the industry. We will use the latest Linux kernel release 4.4.x and Debian/Ubuntu distributions (with embedded distributions like OpenWrt and Yocto).The book will present popular boards in the industry that are user-friendly to base the rest of the projects on - BeagleBone Black, SAMA5D3 Xplained, Wandboard and system-on-chip manufacturers.Readers will be able to take their first steps in programming the embedded platforms, using C, Bash, and Python/PHP languages in order to get access to the external peripherals. More about using and programming device driver and accessing the peripherals will be covered to lay a strong foundation. The readers will learn how to read/write data from/to the external environment by using both C programs or a scripting language (Bash/PHP/Python) and how to configure a device driver for a specific hardware.After finishing this book, the readers will be able to gain a good knowledge level and understanding of writing, configuring, and managing drivers, controlling and monitoring applications with the help of efficient/quick programming and will be able to apply these skills into real-world projects.

gnuplot Cookbook. Visual guide to every kind of graph you can make with this plotting software with this book and

Lee Phillips

gnuplot is the world's finest technical plotting software, used by scientists, engineers, and others for many years. It is in constant development and runs on practically every operating system, and can produce output in almost any format. The quality of its 3d plots is unmatched and its ability to be incorporated into computer programs and document preparation systems is excellent.gnuplot Cookbook ñ it will help you master gnuplot. Start using gnuplot immediately to solve your problems in data analysis and presentation. Quickly find a visual example of the graph you want to make and see a complete, working script for producing it. Learn how to use the new features in gnuplot 4.4. Find clearly explained, working examples of using gnuplot with LaTeX and with your own computer programming language.You will master all the ins and outs of gnuplot through gnuplot Cookbook.You will learn to plot basic 2d to complex 3d plots, annotate from simple labels to equations, integrate from simple scripts to full documents and computer progams. You will be taught to annotate graphs with equations and symbols that match the style of the rest of your text, thus creating a seamless, professional document. You will be guided to create a web page with an interactive graph, and add graphical output to your simulation or numerical analysis program.Start using all of gnuplot's simple to complex features to suit your needs, without studying its 200 page manual through this Cookbook.

Go: Building Web Applications. Building Web Applications

Nathan Kozyra, Mat Ryer

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software. It is a statically typed language with syntax loosely derived from that of C, adding garbage collection, type safety, some dynamic-typing capabilities, additional built-in types such as variable-length arrays and key-value maps, and a large standard library.This course starts with a walkthrough of the topics most critical to anyone building a new web application. Whether it’s keeping your application secure, connecting to your database, enabling token-based authentication, or utilizing logic-less templates, this course has you covered. Scale, performance, and high availability lie at the heart of the projects, and the lessons learned throughout this course will arm you with everything you need to build world-class solutions. It will also take you through the history of concurrency, how Go utilizes it, how Go differs from other languages, and the features and structures of Go's concurrency core. It will make you feel comfortable designing a safe, data-consistent, and high-performance concurrent application in Go.This course is an invaluable resource to help you understand Go's powerful features to build simple, reliable, secure, and efficient web applications.

Go Cookbook. Build modular, readable, and testable applications in Go

Aaron Torres

Go (a.k.a. Golang) is a statically-typed programming language first developed at Google. It is derived from C with additional features such as garbage collection, type safety, dynamic-typing capabilities, additional built-in types, and a large standard library.This book takes off where basic tutorials on the language leave off. You can immediately put into practice some of the more advanced concepts and libraries offered by the language while avoiding some of the common mistakes for new Go developers. The book covers basic type and error handling. It explores applications that interact with users, such as websites, command-line tools, or via the file system. It demonstrates how to handle advanced topics such as parallelism, distributed systems, and performance tuning. Lastly, it finishes with reactive and serverless programming in Go.

Go Design Patterns. Best practices in software development and CSP

Mario Castro Contreras

Go is a multi-paradigm programming language that has built-in facilities to create concurrent applications. Design patterns allow developers to efficiently address common problems faced during developing applications. Go Design Patterns will provide readers with a reference point to software design patterns and CSP concurrency design patterns to help them build applications in a more idiomatic, robust, and convenient way in Go. The book starts with a brief introduction to Go programming essentials and quickly moves on to explain the idea behind the creation of design patterns and how they appeared in the 90’s as a common language between developers to solve common tasks in object-oriented programming languages. You will then learn how to apply the 23 Gang of Four (GoF) design patterns in Go and also learn about CSP concurrency patterns, the killer feature in Go that has helped Google develop software to maintain thousands of servers. With all of this the book will enable you to understand and apply design patterns in an idiomatic way that will produce concise, readable, and maintainable software.

Go: Design Patterns for Real-World Projects. Build production-ready solutions in Go using cutting-edge technology and techniques

Vladimir Vivien, Mario Castro Contreras, Mat Ryer

The Go programming language has firmly established itself as a favorite for building complex and scalable system applications. Go offers a direct and practical approach to programming that lets programmers write correct and predictable code using concurrency idioms and a full-featured standard library. This practical guide is full of real-world examples to help you get started with Go in no time at all. You’ll start by understanding the fundamentals of Go, then get a detailed description of the Go data types, program structures, and Maps. After that, you’ll learn how to use Go concurrency idioms to avoid pitfalls and create programs that are exact in expected behavior. Next, you will get familiar with the tools and libraries that are available in Go to write and exercise tests, benchmarking, and code coverage. After that, you will be able to utilize some of the most important features of GO such as Network Programming and OS integration to build efficient applications. Then you’ll start applying your skills to build some amazing projects in Go. You will learn to develop high-quality command-line tools that utilize the powerful shell capabilities and perform well using Go’s built-in concurrency mechanisms. Scale, performance, and high availability lie at the heart of our projects, and the lessons learned throughout the sections will arm you with everything you need to build world-class solutions. You will get a feel for app deployment using Docker and Google App Engine. Each project could form the basis of a start-up, which means they are directly applicable to modern software markets. With these skills in hand, you will be able to conquer all your fears of application development and go on to build large, robust and succinct apps in Go.This Learning Path combines some of the best that Packt has to offer in one complete, curated package. It includes content from the following Packt products:1. Learning Go Programming2. Go Design Patterns3. Go Programming Blueprints, Second Edition

Go for DevOps. Learn how to use the Go language to automate servers, the cloud, Kubernetes, GitHub, Packer, and Terraform

John Doak, David Justice

Go is the go-to language for DevOps libraries and services, and without it, achieving fast and safe automation is a challenge. With the help of Go for DevOps, you'll learn how to deliver services with ease and safety, becoming a better DevOps engineer in the process.Some of the key things this book will teach you are how to write Go software to automate configuration management, update remote machines, author custom automation in GitHub Actions, and interact with Kubernetes. As you advance through the chapters, you'll explore how to automate the cloud using software development kits (SDKs), extend HashiCorp's Terraform and Packer using Go, develop your own DevOps services with gRPC and REST, design system agents, and build robust workflow systems.By the end of this Go for DevOps book, you'll understand how to apply development principles to automate operations and provide operational insights using Go, which will allow you to react quickly to resolve system failures before your customers realize something has gone wrong.

Go global! Wywiady z twórcami polskich firm, które zdobyły rynki międzynarodowe

Krzysztof Rybiński

Gdy polski rynek okazuje się zbyt mały… Kiedy firma zaczyna spoglądać z ciekawością w stronę zagranicznego odbiorcy, zaczynają się koszty i kłopoty. To prawda, ale ekspansję na rynki zagraniczne rozpoczyna się nie po to, by stracić, lecz po to, by zyskać. Jak to zrobić skutecznie, wiedzą bohaterowie tej książki, założyciele i prezesi jedenastu polskich firm, którym udało się dokonać międzynarodowej ekspansji na szeroką skalę. Krzysztof Rybiński przedstawia tu historie ich drogi do sukcesu, zmagania z przeciwnościami gospodarczymi i proceduralnymi czy problemami finansowymi, sposoby przezwyciężania nieufności i różnic kulturowych, i wreszcie skuteczne, wypracowane przez lata metody na podbicie zagranicznych rynków zbytu. Zapoznanie się z tymi wywiadami pozwoli polskim firmom ograniczyć koszty ekspansji międzynarodowej, uniknąć kłopotów i odnieść sukces. Ta książka to także hołd oddany polskiej przedsiębiorczości i jej reprezentantom, którzy - choć zaczynali działalność lokalnie - potrafili myśleć globalnie i patrzeć poza granice naszego kraju.     Prof. Krzysztof Rybiński - jeden z najbardziej znanych polskich ekonomistów. Karierę zawodową rozpoczynał jako informatyk w Japonii, potem był głównym ekonomistą kilku banków, wiceprezesem NBP, gdzie pod jego nadzorem zmieniono sposób inwestowania rezerw dewizowych, dzięki czemu Polska w ciągu dwóch lat zarobiła dodatkowo miliard dolarów. Był członkiem Komisji Nadzoru Finansowego, partnerem w globalnej firmie doradczej i członkiem wielu rad nadzorczych. Obecnie jest rektorem Akademii Finansów i Biznesu Vistula, w której studiuje 5000 studentów z 40 krajów. Prowadzi też własną firmę doradczą. W 2012 roku został wybrany przez polskich przedsiębiorców najczęściej słuchanym przez nich ekonomistą. Regularnie występuje w telewizji, pisuje felietony do krajowych dzienników i tygodników, jego artykuły ukazują się też w „Financial Times”. Patroni medialni:

Go Machine Learning Projects. Eight projects demonstrating end-to-end machine learning and predictive analytics applications in Go

Xuanyi Chew

Go is the perfect language for machine learning; it helps to clearly describe complex algorithms, and also helps developers to understand how to run efficient optimized code. This book will teach you how to implement machine learning in Go to make programs that are easy to deploy and code that is not only easy to understand and debug, but also to have its performance measured.The book begins by guiding you through setting up your machine learning environment with Go libraries and capabilities. You will then plunge into regression analysis of a real-life house pricing dataset and build a classification model in Go to classify emails as spam or ham. Using Gonum, Gorgonia, and STL, you will explore time series analysis along with decomposition and clean up your personal Twitter timeline by clustering tweets. In addition to this, you will learn how to recognize handwriting using neural networks and convolutional neural networks. Lastly, you'll learn how to choose the most appropriate machine learning algorithms to use for your projects with the help of a facial detection project.By the end of this book, you will have developed a solid machine learning mindset, a strong hold on the powerful Go toolkit, and a sound understanding of the practical implementations of machine learning algorithms in real-world projects.

Go Programming - From Beginner to Professional. Learn everything you need to build modern software using Go - Second Edition

Samantha Coyle

Go Programming – From Beginner to Professional is a comprehensive guide that takes your proficiency in the Go programming language from novice to expert. Starting with fundamental concepts, this book covers variables, command-line tools, and working with data before delving into advanced concepts, including error handling, interfaces, and generics, harnessing Go’s latest features through hands-on exercises. Along the way, you’ll learn to structure projects using Go modules, manage packages effectively, and master debugging techniques.As you progress, you’ll get to grips with practical application-centric aspects such as command-line programming, file manipulation, and working with SQL databases. Additionally, the book explores web server development, RESTful APIs, and utilizing the Go HTTP client to interact with web applications. Further enhancing your Go skills, you’ll learn concurrent programming, testing methodologies, Go tools, and how to deploy applications in the cloud. Throughout the book, you’ll uncover Go’s hidden gems and gain insights into time manipulation, best practices, and more.By the end of this book, you’ll have worked through practical exercises and activities that’ll equip you with the knowledge and skills needed to excel as a proficient Go developer, primed for success in real-world projects.

Go Programming Blueprints. Build real-world, production-ready solutions in Go using cutting-edge technology and techniques

Mat Ryer

Go Programming Blueprints. Build real-world, production-ready solutions in Go using cutting-edge technology and techniques - Second Edition

Mat Ryer

Go is the language of the Internet age, and the latest version of Go comes with major architectural changes. Implementation of the language, runtime, and libraries has changed significantly. The compiler and runtime are now written entirely in Go. The garbage collector is now concurrent and provides dramatically lower pause times by running in parallel with other Go routines when possible.This book will show you how to leverage all the latest features and much more. This book shows you how to build powerful systems and drops you into real-world situations. You will learn to develop high quality command-line tools that utilize the powerful shell capabilities and perform well using Go's in-built concurrency mechanisms. Scale, performance, and high availability lie at the heart of our projects, and the lessons learned throughout this book will arm you with everything you need to build world-class solutions. You will get a feel for app deployment using Docker and Google App Engine. Each project could form the basis of a start-up, which means they are directly applicable to modern software markets.