Open Source Book
The source text for Computer Networks: A Systems Approach is now available under terms of the Creative Commons (CC BY 4.0) license. Our hope is that open sourcing this material will both make it widely available and serve as an attractor for new content: updating what's already there, expanding it to cover new topics, and augmenting the text with additional teaching collateral.

Computer Networks: A Systems Approach (6th Edition)
Web Version
Print Version on Amazon
Source on GitHub
Web Version
Print Version on Amazon
Source on GitHub
Also check out our follow-on Systems Approach Series for micro-books on emerging topics.