功能
命令檢視防火牆狀態
firewall-cmd --state 或者systemctl status firewalld
開啟systemctl start firewalld
關閉systemctl stop firewalld
重啟systemctl restart firewalld
開機自啟動
systemctl enable firewalld.service
永久關閉
systemctl disable firewalld.service
檢視防火牆開放的埠
firewall-cmd --permanent --zone=public --list-ports
開放8080埠
firewall-cmd --zone=public --add-port=8080/tcp --permanent
取消8080埠
firewall-cmd --zone=public --remove-port=9200/tcp --permanent
firewall-cmd --reload
驗證新增加埠是否生效
firewall-cmd --zone=public --query-port=8080/tcp
1.檢視防火牆狀態：
firewall-cmd --state
2.防火牆
systemctl start firewalld 開啟
systemctl stop firewalld 關閉
systemctl restart firewalld 重啟
systemctl status firewalld 狀態
3.檢視防火牆開放的埠
firewall-cmd --permanent --zone=public --list-ports
5.開放8080埠
firewall-cmd --zone=public --add-port=8080/tcp --permanent
6.取消8080埠
firewall-cmd --zone=public --remove-port=9200/tcp --permanent
firewall-cmd --reload
8.驗證新增加埠是否生效
firewall-cmd --zone=public --query-port=8080/tcp
9.防火牆開機自啟動，永久關閉
systemctl enable firewalld.service
systemctl disable firewalld.service
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