Mastering FreeBSD and OpenBSD Security

**Editorial Review of "Mastering FreeBSD and OpenBSD Security"** "Mastering FreeBSD and OpenBSD Security" is an essential resource for anyone working with these widely adopted server operating systems. The book effectively fills a significant gap in available literature focused on BSD security, which has traditionally been less plentiful compared to that of GNU/Linux and Windows platforms. Divided into three comprehensive sections, the book begins by addressing the financial implications of security. By underscoring the principle that security expenditures should correlate directly with the value of the data and systems at stake, the authors, Yanek Korff, Paco Hope, and Bruce Potter, guide readers toward efficient resource allocation related to security measures. The second section delves deeply into the implementation of services. It thoroughly explores critical areas such as DNS, mail, and web services, while also providing in-depth discussions on firewalls, particularly PF and IPFW, and the distinctions between FreeBSD jails and chrooted environments found in OpenBSD. It also presents a variety of server options, advocating for secure alternatives to traditional solutions. Finally, the book tackles auditing, logging, and incident response. It emphasizes the importance of a strategic, cost-efficient approach to security incidents, providing readers with practical advice on setting up a secure log server and responding to breaches. Readers appreciate the clear, concise, and actionable insights presented throughout the book, which make complex topics accessible without delving into unnecessary verbosity. The authors guide readers step-by-step from a fresh installation to a hardened, secure system, making this a standout choice for those looking to secure their BSD environments. However, some readers express a desire for more detailed coverage in certain areas, including the security of OpenNTPD, a deeper exploration of Qmail compared to Sendmail and Postfix, and a more comprehensive guide to CARP (Common Address Redundancy Protocol) features. Despite these minor shortcomings, "Mastering FreeBSD and OpenBSD Security" is highly recommended for anyone aiming to enhance their BSD security knowledge and practice. **