zmap is an open-source network scanner that enables researchers to easily perform Internet-wide network studies.
How to get this tool
To use this tool, please use a method listed below.
In a Linux (Debian OS), run the following command(s).
sudo apt install zmap
Download directly from the following link:
How to execute
#By default, ZMap will perform a TCP SYN scan on the specified port at the maximum rate possible. A more conservative configuration that will scan 10,000 random addresses on port 80 at a maximum 10 Mbps can be run as follows:
zmap --bandwidth=10M --target-port=80 --max-targets=10000 --output-file=results.csv
#ZMap can also be used to scan specific subnets or CIDR blocks. For example, to scan only 10.0.0.0/8 and 192.168.0.0/16 on TCP/80, run:
zmap -p 80 10.0.0.0/8 192.168.0.0/16
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This article was contributed by Jason Jacobs from Guyana. Jason is a member of the Caribbean CSPA.