Book Image

Nmap Network Exploration and Security Auditing Cookbook, Third Edition - Third Edition

By : Paulino Calderon
Book Image

Nmap Network Exploration and Security Auditing Cookbook, Third Edition - Third Edition

By: Paulino Calderon

Overview of this book

Nmap is one of the most powerful tools for network discovery and security auditing used by millions of IT professionals, from system administrators to cybersecurity specialists. This third edition of the Nmap: Network Exploration and Security Auditing Cookbook introduces Nmap and its family - Ncat, Ncrack, Ndiff, Zenmap, and the Nmap Scripting Engine (NSE) - and guides you through numerous tasks that are relevant to security engineers in today’s technology ecosystems. The book discusses some of the most common and useful tasks for scanning hosts, networks, applications, mainframes, Unix and Windows environments, and ICS/SCADA systems. Advanced Nmap users can benefit from this book by exploring the hidden functionalities within Nmap and its scripts as well as advanced workflows and configurations to fine-tune their scans. Seasoned users will find new applications and third-party tools that can help them manage scans and even start developing their own NSE scripts. Practical examples featured in a cookbook format make this book perfect for quickly remembering Nmap options, scripts and arguments, and more. By the end of this Nmap book, you will be able to successfully scan numerous hosts, exploit vulnerable areas, and gather valuable information.
Table of Contents (22 chapters)
Appendix A: HTTP, HTTP Pipelining, and Web Crawling Configuration Options
Appendix Β: Brute-Force Password Auditing Options
Appendix F: 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 in 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 RFC 3501.

The -p143,993 ...