Peter N.M. Hansteen

About the Author

Peter N.M. Hansteen is a seasoned systems administrator and technical writer with over two decades of experience in network security and open-source technologies. Renowned for his clear, no-nonsense approach to complex topics, Hansteen has become a go-to authority on firewall configuration and BSD systems. His seminal work, The Book of PF, 4th Edition: A No-Nonsense Guide to the OpenBSD Firewall, has empowered countless IT professionals and enthusiasts to master packet filtering and secure their networks effectively. Drawing from hands-on expertise in production environments, Hansteen's writing demystifies intricate concepts, making them accessible without sacrificing depth. Based in Norway, he contributes actively to online communities, sharing insights on security best practices and the evolving landscape of open-source software.