Book of GNS3
The Book of GNS3 teaches you to use GNS3 to simulate network connections and troubleshoot potential problems, all using a single computer.
System Administration
Book of IMAP
The Book of IMAP offers a detailed introduction to IMAP and POP3, the two protocols that govern all modern mail servers and clients.
Book of PF, 3rd Edition
The Book of PF, 3rd Edition is the essential guide to building a secure network with PF, the OpenBSD packet filtering tool.
Cisco Routers for the Desperate, 2nd Edition
Cisco Routers for the Desperate, 2nd Edition is designed to be read once and left alone until something breaks. When it does, you'll have everything you need to know in one easy-to-follow guidebook.
Designing BSD Rootkits
Hack the FreeBSD kernel for yourself!
DevOps for the Desperate
A hands-on, no-nonsense guide for those who land in a DevOps environment and need to get up and running quickly.
Kill It with Fire
Kill It with Fire chronicles the challenges of dealing with aging computer systems, along with sound modernization strategies.
Linux Firewalls
If you're responsible for keeping a network secure, you'll find Linux Firewalls invaluable in your attempt to understand attacks and to detect and even prevent compromises.
Nagios, 2nd Edition
Nagios is robust but also complex, and Nagios: System and Network Monitoring, 2nd Edition, updated to address Nagios 3.0, will help you take full advantage of this program.
Network Flow Analysis
Network Flow Analysis teaches the busy network administrator how to build every component of a flow-based network awareness system, and how network analysis and auditing can help address problems and improve network reliability.
Network Know-How
This practical and comprehensive guide will teach you how to implement security, create intranets, and more.
Network Programming with Go
Network Programming with Go teaches you how to write clean, secure network software with the programming language designed to make it seem easy.
PowerShell for Sysadmins
Powershell for Sysadmins (formerly Automate the Boring Stuff with PowerShell) teaches you how to automate real-world tasks that IT professionals and system administrators deal with every day.
Practical Doomsday
Outlines a model for evaluating risks in your life, as well as preparing for a wide range of potential crises.
Practical Packet Analysis, 3rd Edition
Practical Packet Analysis, 3rd Ed. teaches you how to use Wireshark for packet capture and analysis.
TCP/IP Guide
The TCP/IP Guide is a must-have addition to the libraries of internetworking students, educators, networking professionals, and those working toward certification.
The Book of Kubernetes
This hands-on guidebook explains the inner workings of containers, and shows how Kubernetes helps computing, networking, and storage.
Wicked Cool Shell Scripts, 2nd Edition
Wicked Cool Shell Scripts, 2nd Edition is a collection of fun tools for sysadmins, web developers, and every Linux user.