• https://firewalld.org/
• https://firewalld.org/documentation/man-pages/firewall-cmd
• https://firewalld.org/documentation/man-pages/firewalld.richlanguage.html
• https://www.cnblogs.com/gongjingyun123—/p/12018442.html
• https://14y1g8.axshare.com/#g=1&p=%E4%B8%80%E8%88%AC%E4%BF%A1%E6%81%AF