Netcat has become one of the indispensable tools of system administrators, network administrators and even programmers because it does its job both very simple and very efficient. It is one of the best representatives of the Unix philosophy as well, with its under-defined job well done.
Install Netcat Package
yum install -y nc
Check if the netcat package has been successfully installed.
rpm -qa | grep -i nmap-ncat
You can quickly verify the functionality of the command by checking port 443 as shown below.
nc -vz alexa.com 443
Connection to alexa.com 443 port [tcp/https] succeeded!
-v: Adjust the level of detail can be used several times
z: Zero I / O mode, only report the connection status
Usage of Nmap Listener
nc -l 8080(Port)
nc ipaddr 8080(Port)
Great have a nice day.