Nmap is a popular open source network scanning tool used
for network exploration, security auditing, and vulnerability testing. Here's
an example of how to use Nmap:
Open a command prompt or
terminal window on your computer.
Type "nmap" followed
by the IP address or domain name of the target network or device that you want
to scan. For example, to scan a website, you might enter:
nmap www.example.com
Hit enter to start the scan. Nmap will begin probing the
target network or device and will display information about the discovered
hosts and open ports.
You can use various options
and flags to customize the scan. For example, the "-sS" flag
specifies a TCP SYN scan, which is a stealthy scan method that can bypass some
firewall configurations. The "-p" flag specifies the ports to scan.
For example, to scan only ports 80 and 443 on a website, you might enter:
nmap -sS -p 80,443 www.example.com
Hit enter to start the customized scan. Nmap will display
the results of the scan, including the discovered hosts and open ports.
You can use various other Nmap
options and commands to further customize your scan and analyze the results.
For example, the "-A" flag specifies an aggressive scan that attempts
to identify the operating system and services running on the target hosts.
nmap -sS -A -p 80,443 www.example.com
Nmap
is a powerful tool with many options and features, so it's important to read
the documentation and understand how to use it effectively and ethically. It's
also important to ensure that you have permission to scan the target network or
device, and to take appropriate precautions to avoid causing disruptions or
harm.
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