Publications

SSH Hardening & Offensive Mastery

SSH Hardening & Offensive Mastery is an essential book for those seeking to master the security of the SSH protocol, exploring with rigor both defense strategies and the most relevant offensive techniques, including different types of tunnels and hijacking attacks. Diego Ruiz de Bucesta y Álvarez, a prominent member of the DSDSec team, presents a comprehensive and practical book, designed to strengthen the protection of SSH servers in today’s digital environment.

This book begins with a defensive focus, providing detailed methods and specific configurations to harden SSH service security. Subsequently, it delves into the offensive realm, unveiling various attack techniques through practical and clearly explained laboratory scenarios. The reader will gain a deep understanding of vulnerabilities and strategies to mitigate them, covering everything from basic attacks and restriction evasion to advanced techniques such as hijacking, malware infection, and system compromise via dynamic tunnels. Furthermore, current threats such as the Terrapin attack (CVE-2023-48795) are explored, offering a complete and up-to-date overview of risks and solutions.

SSH Hardening & Offensive Mastery goes beyond checklists. It offers a solid understanding of security, empowering professionals, students, and enthusiasts not only to protect their SSH systems, but also to establish firm foundations for the security of any other service. The clarity, detail, and organized structure of the book make it a valuable and accessible resource, guiding both beginners and advanced users on their path to a deep knowledge of SSH security.

The prologue, written by Manuel Luis Ruiz de Bucesta y Álvarez, President of the Institute of Historical Studies Bances y Valdés, provides a relevant worldview on the current importance of cybersecurity. The preface, authored by Ariel Iván Ruiz Mateos, member of DSDSec, enriches the work with his extensive and deep security experience, recognized for his extensive publications of technical content at @rroba and his contributions to renowned journals such as USERS.CODE and Hackin9.

We invite you to explore this study to acquire the necessary knowledge about SSH security, effectively protecting your digital infrastructures and understanding the implications of advanced attacks.