Firewalls and Internet Security: Repelling the Wily Hacker
by William R. Cheswick, Steven M. Bellovin
Publisher: Addison-Wesley 1994
The book gives invaluable advice and practical tools for protecting our computers. You will learn how to plan and execute a security strategy that will thwart the most determined and sophisticated of hackers, while still allowing your company easy access to Internet services. In particular, the authors show step-by-step how to set up a "firewall" gateway - a dedicated computer equipped with safeguards that acts as a single, more easily defended, Internet connection.
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by Nitesh Dhanjani, Justin Clarke - O'Reilly Media, Inc.
The book shows experienced administrators how to modify, customize, and extend popular open source security tools such as Nikto, Ettercap, and Nessus. This concise, high-end guide discusses the common customizations and extensions for these tools.
by Leo Notenboom - Puget Sound Software
In this free 113 page ebook I summarize popular articles from covering the basics -- the things you must do, the software you must run and the concepts you need to be aware of -- to keep your computer and your data safe as you use the internet.
by Gordon Fyodor Lyon - Nmap Project
The official guide to the Nmap Security Scanner, a free and open source utility used by millions of people for network discovery, administration, and security auditing. This book suits all levels of security and networking professionals.
Ethical hacking, which encompasses methodical penetration testing, white hat hacking, and vulnerability testing -- involves the same tools, tricks, and techniques that criminal hackers use, but with the target's permission in a professional setting.