install firewall-cmd centos 7

C++
sudo firewall-cmd --zone=public --permanent --add-port=5000/tcp
sudo firewall-cmd --zone=public --permanent --add-port=4990-4999/udp
sudo firewall-cmd --zone=public --permanent --list-ports
systemctl status firewalldsudo yum install firewalld
sudo systemctl enable firewalld
sudo reboot
Source

Also in C++: