CentOS 7 install firewall

 The difference between Centos7 and Centos6 firewall:

    The tools used are different. Centos6 uses iptables, Centos7 uses filewall

    iptables is used to filter packets and belongs to the network layer firewall.

    What services are allowed by the firewall and which ports are available ... belong to the higher-level firewall.

 

 

 

 

 

 Reference: https://www.linuxidc.com/Linux/2017-10/147238.htm