New Training: Use Nmap for Information Gathering

In this 6-video skill, CBT Nuggets trainer Bob Salmans teaches you how to use NMAP to identify hosts on a network and the services they’re running. Watch this new CompTIA,Cyber Security training.

Watch the full course: CompTIA PenTest+

This training includes:

• 6 videos

• 34 minutes of training

You’ll learn these topics in this skill:

• Using Basic NMAP Commands

• Exploring PING Scans with NMAP

• Scanning TCP and UDP with NMAP

• Identifying Host Attributes with NMAP

• Using NMAP Scripts

• Bypassing Firewalls with NMAP

What Can NMAP Do for You?

Network Mapper, or "NMAP" for short, is a powerful open-source tool that will allow you to scan local or remote networks to develop a deep understanding of what's actually happening. Some of the most critical features include:

• Nping: A tool to generate packets and analyze responses.

• Zenmap: An advanced graphical user interface (GUI) to review and explore results.

• Ndiff: A utility that allows you to compare different scan results.

• Ncat: A tool that facilitates flexible data transfer, redirection, and has debugging features.

Although you can get nearly as advanced with NMAP as you can imagine, there are a few dozen basic commands that form the foundation of network mapping. These fall into several major categories, such as:

• Target selection: Scanning single IPs, a range of IPs, or a host.

• Port selection: Scanning single ports, a defined range, or all ports on the network.

• Using scans with various tools: These include TCP connect and TCP SYN scan.

• Viewing and interpreting results: You can easily export results in various file formats and save the data for other uses.

• Leveraging scripts: NMAP will allow you to scan using specific unique scripts, default scripts, and update the script database with your preferences as needed.