CentOS7 Firewall

firewall-cmd --permanent --add-service=http
firewall-cmd --permanent --zone=trusted --add-port=80/tcp

Add port 8080 for external network access 
firewall-cmd --permanent --add -port=8080/tcp  

open the corresponding port
firewall-cmd --permanent --zone=public --add-port=5672/tcp
firewall-cmd --permanent --zone=public --add-port=15672/tcp
firewall -cmd --reload
restart firewall 
systemctl restart firewalld