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Useful “FirewallD” Rules to Configure and Manage Firewall in Linux

By Ravi Saive

Firewalld replaced old Fedora’s firewall (Fedora 18 onwards) mechanism, RHEL/CentOS 7 and other latest distributions rely on this new mechanism. One of the biggest motive of introducing new firewall system is that the old firewall needs a restart after making each change, thus breaking all active connections.

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