Book Image

Nmap: Network Exploration and Security Auditing Cookbook - Second Edition

By : Paulino Calderon
Book Image

Nmap: Network Exploration and Security Auditing Cookbook - Second Edition

By: Paulino Calderon

Overview of this book

This is the second edition of ‘Nmap 6: Network Exploration and Security Auditing Cookbook’. A book aimed for anyone who wants to master Nmap and its scripting engine through practical tasks for system administrators and penetration testers. Besides introducing the most powerful features of Nmap and related tools, common security auditing tasks for local and remote networks, web applications, databases, mail servers, Microsoft Windows machines and even ICS SCADA systems are explained step by step with exact commands and argument explanations. The book starts with the basic usage of Nmap and related tools like Ncat, Ncrack, Ndiff and Zenmap. The Nmap Scripting Engine is thoroughly covered through security checks used commonly in real-life scenarios applied for different types of systems. New chapters for Microsoft Windows and ICS SCADA systems were added and every recipe was revised. This edition reflects the latest updates and hottest additions to the Nmap project to date. The book will also introduce you to Lua programming and NSE script development allowing you to extend further the power of Nmap.
Table of Contents (18 chapters)
13
Brute Force Password Auditing Options
17
References and Additional Reading

Retrieving the capabilities of an IMAP server


IMAP servers may support different capabilities. There is a command named Capability that allows clients to list these supported mail server capabilities, and we can use Nmap to automate this task.

This recipe shows you how to list the capabilities of an IMAP server with Nmap.

How to do it...

Open your favorite terminal and enter the following nmap command:

$ nmap -p143,993 --script imap-capabilities <target>

The results will be included under the script output section:

   993/tcp  openssl/imap Dovecot imapd 
   |_imap-capabilities: LOGIN-REFERRALS completed AUTH=PLAIN OK     
   Capability UNSELECT THREAD=REFERENCES AUTH=LOGINA0001IMAP4rev1    
   NAMESPACE SORT CHILDREN LITERAL+ IDLE SASL-IRMULTIAPPEND

How it works...

The imap-capabilities script was submitted by Brandon Enright, and it attempts to list the supported functionality of IMAP servers using the Capability  command defined in the RFC 3501.

The argument NSE script -p143,993 --script...