centos7 防火墙firewall命令 基本使用启动：systemctl start firewalld 关闭：systemctl stop firewalld 查看状态：systemctl status firewalld 开机禁用：systemctl disable firewalld 开机启用：systemctl enable firewalld配置firewalld-cmd查看版本：firewall-cmd --version 查看帮助：firewall-cmd --help 显示状态：firewall-cmd --state 查看所有打开的端口：firewall-cmd --zone=public --list-ports 更新防火墙规则：firewall-cmd --reload端口开放添加：firewall-cmd --zone=public --add-port=80/tcp --permanent 重新载入：firewall-cmd --reload 删除：firewall-cmd --zone= public --remove-port=80/tcp --permanent端口转发添加（例如3306 -> 3336）：firewall-cmd --permanent --zone=public --add-forward-port=port=3336:proto=tcp:toport=3306:toaddr=删除：firewall-cmd --permanent --remove-forward-port=port=3306:proto=tcp:toport=3336:toaddr=查看转发的端口：firewall-cmd --list-forward-ports查看当前开了哪些端口其实一个服务对应一个端口，每个服务对应/usr/lib/firewalld/services下面一个xml文件。firewall-cmd --list-services查看还有哪些服务可以打开firewall-cmd --get-services查看所有打开的端口：firewall-cmd --zone=public --list-ports更新防火墙规则：firewall-cmd --reload添加多个端口firewall-cmd --permanent --zone=public --add-port=8080-8083/tcp删除某个端口firewall-cmd --permanent --zone=public --remove-port=81/tcp针对某个 IP开放端口firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.142.166" port protocol="tcp" port="6379" accept" firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.0.233" accept"删除某个IPfirewall-cmd --permanent --remove-rich-rule="rule family="ipv4" source address="192.168.1.51" accept"针对一个ip段访问firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.0.0/16" accept" firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.1.0/24" port protocol="tcp" port="9200" accept"添加操作后别忘了执行重载firewall-cmd --reload