Cenos7 firewall command

cenOS7 Use Firewall A firewall , The relevant commands are as follows ：
install Firewall command ：

yum install firewalld firewalld-config

Firewall Open common port commands ：

firewall-cmd --zone=public --add-port=80/tcp --permanent
firewall-cmd --zone=public --add-port=443/tcp --permanent
firewall-cmd --zone=public --add-port=22/tcp --permanent
firewall-cmd --zone=public --add-port=21/tcp --permanent
firewall-cmd --zone=public --add-port=53/udp --permanent

Firewall Close common port command ：

firewall-cmd --zone=public --remove-port=80/tcp --permanent
firewall-cmd --zone=public --remove-port=443/tcp --permanent
firewall-cmd --zone=public --remove-port=22/tcp --permanent
firewall-cmd --zone=public --remove-port=21/tcp --permanent
firewall-cmd --zone=public --remove-port=53/udp --permanent

Batch add interval ports

firewall-cmd --zone=public --add-port=4400-4600/udp --permanent
firewall-cmd --zone=public --add-port=4400-4600/tcp --permanent

Open firewall command ：

systemctl start firewalld.service

Restart the firewall command ：

firewall-cmd --reload   perhaps    service firewalld restart

Check out the port list ：

firewall-cmd --permanent --list-port

Disable firewall

systemctl stop firewalld

Set boot up

systemctl enable firewalld

Stop and disable startup

sytemctl disable firewalld

Check the status

systemctl status firewalld

perhaps

firewall-cmd --state