Computer Tips - How can I open an arbitrary port using the command line?

Date: 2016mar23 OS: RedHat/Fedora/CentOS Keywords: iptables Q. How can I open an arbitrary port using the command line? A. For example to open TCP port 5000
firewall-cmd --list-ports Check first firewall-cmd --add-port=5000/tcp --permanent Let it thru firewall-cmd --reload Reboot firewall firewall-cmd --list-ports Check to make sure