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centos7操作防火墙
查看防火墙状态
sudo systemctl status firewalld
启动防火墙(重启后失效)
sudo systemctl start firewalld
关闭防火墙(重启后失效)
sudo systemctl stop firewalld
启动防火墙(持续生效)
sudo systemctl enable firewalld
关闭防火墙(持续生效)
sudo systemctl disable firewalld
查看所有放通的端口
firewall-cmd--zone=public --list-ports
更新防火墙规则
firewall-cmd --reload
放通80的TCP端口
firewall-cmd --zone=public --add-port=80/tcp --permanent
放通80的UDP端口
firewall-cmd --zone=public --add-port=80/tcp --permanent
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