How to Open Port 80 on CentOS 7 (firewall-cmd and iptables commands)
CentOS 7 and above uses the new firewall-cmd to open and close ports in the firewall instead of using iptables. Video shows you Linux commands and their output on CentOS 7 to permanently open port 80 (for world wide web browsing apps like Apache). Follow exactly what to type to open port 80 on your web server. Linux experts series for Linux nerds.
centos 7
