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.