linux centos7 默认防火墙是关闭的，设置了开启端口后一定要重启防火墙，否则端口开启会不起作用
查看已开启的端口
firewall-cmd --list-ports
查看防火墙状态
firewall-cmd --state
开启防火墙
systemctl start firewalld
开启端口
firewall-cmd --zone=public --add-port=8888/tcp --permanent
重启防火墙
firewall-cmd --reload
linux centos7 默认防火墙是关闭的，设置了开启端口后一定要重启防火墙，否则端口开启会不起作用 查看已...
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本文标题：usage: see firewall-cmd man page
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