[:zh]CentOS 7 Firewall不会用？没关系，来看看这个就会了#Experience[:en]CentOS 7 Firewall can't use? It does not matter, take a look at this you will be#Experience[:]
[:en] In CentOS 7, add a new service, Firewalld, the following picture, so that we clearly understand the relationship between Firewall and iptables and the difference between. Article from Install it
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