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Node Security, by Dominic Barnes
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For an in-depth understanding of how you can secure your Node.js applications, this is the ideal book. By learning to write code defensively and adopting security techniques you will be able to withstand common web attacks.
Overview
- Examine security features and vulnerabilities within JavaScript
- Explore the Node platform, including the event-loop and core modules
- Solve common security problems with available npm modules
In Detail
Node.js is a fast-growing platform for building server applications using JavaScript. Now that it is being more widely used in production settings, Node applications will start to be specifically targeted for security vulnerabilities. Protecting your users will require an understanding of attack vectors unique to Node, as well as shared with other web applications.
To secure Node.js applications, we’ll start by helping you delve into the building blocks that make up typical Node applications. By understanding all the layers that you are building on top of, you can write code defensively and securely. In doing so, you will be able to protect your user's data and your infrastructure, while still using the rock-star technology behind Node.js.
Teaching you how to secure your Node applications by learning about each of the layers you will be building on top of; starting with JavaScript itself, then the Node platform, and finally the npm module ecosystem. By starting with JavaScript, you will learn what to avoid and what to embrace. Next, we will explain the Node platform, including its unique architecture and core modules, so you know how things work under the hood. Finally, we will introduce the rich ecosystem of npm modules, including modules to help you solve the common security problems you might face. Through our handy tutorials, you will be able to write secure Node.js applications, ones that will remain online under pressure and be able to weather the most common attacks that face web applications today.
What you will learn from this book
- Master the origins of the Node.js and npm projects
- Understand the architecture, including the event-loop and asynchronous I/O
- Delve into the key aspects of avoiding some common pitfalls of JavaScript development
- Incorporate ES5's security improvements, including strict-mode
- Add static code analysis and the code-quality it promotes
- Explore the basics of proper error-handling within Node applications
- Understand the architecture of Express and Connect
- Adapt common authentication and authorization schemes
Approach
A practical and fast-paced guide that will give you all the information you need to secure your Node applications.
Who this book is written for
If you are a developer who wishes to secure your Node applications, whether you are already using Node Security in production, or are considering using it for your next project, then this book will enable you to ensure security of your applications. An understanding of JavaScript is a prerequisite, and some experience with Node is recommended, though not required.
- Sales Rank: #2952503 in Books
- Published on: 2013-10-25
- Released on: 2013-10-25
- Original language: English
- Number of items: 1
- Dimensions: 9.25" h x .22" w x 7.50" l, .39 pounds
- Binding: Paperback
- 94 pages
About the Author
Dominic Barnes
Dominic Barnes is a web developer as a hobbyist and by profession. Since writing HTML with Microsoft Notepad back in high school, he has grown in skill through the many opportunities he has had. With experiences in ColdFusion, ASP.NET, PHP, and now Node.js, his passion is to create applications that people find useful. To him, the user experience is paramount and requires writing secure and high-performance code, no matter what platform is being used.
Most helpful customer reviews
6 of 6 people found the following review helpful.
oriented to the somewhat still novice node.js programmer but still valuable
By Antonio Elena Batllo
As in previous occasions, Packt Pub sent me this ebook for review. Naturally, as the book's title says, this is not a general / beginner's book for Node.js, but, in spite of that, the book starts with an opening chapter explaining the history of node.js, how it is different and with the canonical createServer example one finds everywhere. Maybe this chapter, notwithstanding its brevity, was not really needed, since the audience for the book surely already know these things.
Then it follows with a "general considerations" chapter that is more general javascript than node actually, starting with ES5's strict mode and then including explanations of functions that everyone knows, such as the risks of using eval(), and also others some programmers might not be that aware of, such as seal(), freeze(), object property descriptors, and then moving on to static program analysis with JSLint / JSHint as another tool in your belt before really approaching node.js' security concerns proper. There are also general recommendations and what to look for in npm modules.
However more than security, we should be talking about the wider defensive coding / good practices spectrum, such as correctly handling exceptions, correctly using error callbacks, monitoring processes or node Domains (introduced in v. 0.8).
The next chapter moves into applications, briefly introducing express and connect and then a brief how-to on using the standard choice of passport.js, and also third party solutions, such as OpenID and OAuth, of course. What strategies are out there and how to plug the different middlewares is also taken care of. Logging is also discussed as part of the things the conscious developer should not neglect too, and general recommendations about it are given, recommendations that are good for any language or application platform, in any case, as the fact is that it is basically OWASP's guidelines that's being followed here.
The winston module for logging is the one chosen for specific node.js usage, here, as it seems to be the most favoured, although there are others, which is also why the author chose to tell the reader what to look for in modules to also make sure that these third-party pieces are also secure and well-managed.
The last two chapters are devoted to requests and to responses. The request chapter deals with request size limits, use of streams, and how they help protecting your app from attacks stemming from large payloads. Also how to monitor the event loop for health using node-toobusy module (sample taken from github). Then comes CSRF, input Validation (node-validator / express-validator).
Regarding the response layer, well-known stuff such as XSS, with several examples explaining what it is, and some simple scenarios, and DoS are explained. The XSS and related injections are probably the area that's explained more in-depth.
Then, the Helmet module is introduced as a way of mitigating risks with a series of specific http headers and mechanisms such as CSP (content security policy - check browser support here), HSTS, but which are embodied in specific headers anyway. Adequate examples of configurations for these headers are given.
With that this book comes to an end. All in all, it's not a bad book at all, but it is clearly oriented to the somewhat still novice node.js programmer, that might not be aware of all the good practices and security concerns alike that need to be taken care of in node.js / express apps. While I can't speak for anyone out there, I want to imagine that more experienced developers are familiar with the things discussed here, as they are mostly the most well-known tooling for these concerns. For those learning node or creating their first apps, I believe this is a valuable resource.
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