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Centos防火墙相关命令

firewall-cmd --state                   # 查看防火墙状态
systemctl stop firewalld.service       # 停止防火墙
systemctl disable firewalld.service    # 禁止防火墙开机自启

Ubuntu防火墙相关命令

sudo ufw disable             #关闭ufw防火墙
sudo ufw default allow    #允许全部外部访问主机
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