Linux Cookbook: Essential Skills for Linux Users and System & Network Administrators, Edition 2

Understanding Linux Network Internals: Guided Tour to Networking on Linux

Linux Security Cookbook: Security Tools & Techniques

Packet Guide to Core Network Protocols

Linux Server Hacks: 100 Industrial-Strength Tips and Tools

Essential System Administration: Tools and Techniques for Linux and Unix Administration, Edition 3

Linux iptables Pocket Reference: Firewalls, NAT & Accounting

Linux Kernel Development: Edition 3

Understanding the Linux Kernel: From I/O Ports to Process Management, Edition 3

Linux Basics for Hackers: Getting Started with Networking, Scripting, and Security in Kali

Learning the bash Shell: Unix Shell Programming, Edition 3

TCP/IP Illustrated: The Protocols, Volume 1, Edition 2

Linux Device Drivers: Where the Kernel Meets the Hardware, Edition 3

TCP/IP Network Administration: Help for Unix System Administrators, Edition 3

Mastering OpenVPN

The Design and Implementation of the FreeBSD Operating System: Edition 2

Troubleshooting with the Windows Sysinternals Tools: Edition 2

Internet Routing with BGP