CHAPTER 3
Nmap—The Network Mapper
WHAT YOU WILL LEARN IN THIS CHAPTER:
- Ports
- Protocols
- Services
- OS
- ZenMap
One of my favorite nonprofit organizations is the Center for Internet Security (CIS). The mission of CIS is to “identify, develop, validate, promote, and sustain best‐practice solutions for cyber defense and build and lead communities to enable an environment of trust in cyberspace.” CIS is a collection of subject‐matter experts (SMEs) who are able to work together to identify effective security measures for the good of everyone. CIS has an important role in cybersecurity. One of its many contributions is maintaining the most powerful and current cybersecurity best‐practices documentation called the “CIS Controls Version 7.”
The controls are divided into basic, foundational, and organizational actions so that you can protect your organization and safeguard your data from cyberattacks. Attackers all over the world are scanning...
