Book Image

Nmap 6: Network Exploration and Security Auditing Cookbook

Book Image

Nmap 6: Network Exploration and Security Auditing Cookbook

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)
Nmap 6: Network Exploration and Security Auditing Cookbook
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
References
Index

Retrieving the capabilities of a POP3 mail server


POP3 mail servers may support different capabilities defined in RFC 2449. By using a POP3 command we can list them, and thanks to Nmap, we can automate this task and include this service information in our scan results.

This recipe will teach you how to list the capabilities of a POP3 mail server by using Nmap.

How to do it...

Open your favorite terminal and enter the following Nmap command:

$ nmap -p110 --script pop3-capabilities <target>

A list of server capabilities will be included in the script output section:

PORT    STATE SERVICE 
110/tcp open  pop3 
|_pop3-capabilities: USER CAPA UIDL TOP OK(K) RESP-CODES PIPELINING STLS SASL(PLAIN LOGIN) 

How it works...

The script pop3-capabilities was submitted by Philip Pickering, and it attempts to retrieve the capabilities of POP3 and POP3S servers. It uses the POP3 command CAPA to ask the server for a list of supported commands. This script also attempts to retrieve the version string via...