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Nmap 6: Network Exploration and Security Auditing Cookbook

Nmap 6: Network Exploration and Security Auditing Cookbook

4.7 (9)
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Nmap 6: Network Exploration and Security Auditing Cookbook

Nmap 6: Network Exploration and Security Auditing Cookbook

4.7 (9)

Overview of this book

Nmap is a well known security tool used by penetration testers and system administrators. The Nmap Scripting Engine (NSE) has added the possibility to perform additional tasks using the collected host information. Tasks like advanced fingerprinting and service discovery, information gathering, and detection of security vulnerabilities."Nmap 6: Network exploration and security auditing cookbook" will help you master Nmap and its scripting engine. You will learn how to use this tool to do a wide variety of practical tasks for pentesting and network monitoring. Finally, after harvesting the power of NSE, you will also learn how to write your own NSE scripts."Nmap 6: Network exploration and security auditing cookbook" is a book full of practical knowledge for every security consultant, administrator or enthusiast looking to master Nmap. The book overviews the most important port scanning and host discovery techniques supported by Nmap. You will learn how to detect mis-configurations in web, mail and database servers and also how to implement your own monitoring system. The book also covers tasks for reporting, scanning numerous hosts, vulnerability detection and exploitation, and its strongest aspect; information gathering.
Table of Contents (18 chapters)
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Nmap 6: Network Exploration and Security Auditing Cookbook
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
References
Index

Introduction


Mail servers are available in almost any organization because e-mail has taken over as the preferred communication channel for obvious reasons. The importance of mail servers depends on the information stored in them. Attackers often compromise an e-mail account and proceed to take over all other accounts found by using the "Forgot password" functionality available in almost every web application. Sometimes compromised accounts are simply eavesdropped for months without anyone noticing, and may even be abused by spammers. Therefore, any good system administrator knows it is essential to have a secure mail server.

In this chapter I will go through different NSE tasks for administering and monitoring mail servers. I will also show the offensive side available to penetration testers. We will cover the most popular mail protocols such as SMTP, POP3, and IMAP.

We will review tasks such as retrieving capabilities, enumerating users, brute forcing passwords, and even exploiting vulnerable...

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