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LinuxBSDos.com shows you how to replace Shorewall with FirewallD on ROSA Desktop Fresh R4



This tutorial show how to replace it with FirewallD, a firewall application with support for network zones (also IP zones). FirewallD comes with a command line client (firewall-cmd), a graphical interface firewall-config and an applet appropriately named firewall-applet.

By default, Shorewall is disabled, but if you attempt to enable it using systemctl start shorewall, it will fail to start. And the reason systemd gives is that Shorewall lacks support for network zones. That’s why it’s important, if you intend to enable a firewall on ROSA Desktop Fresh R4 (recommended), that you replace Shorewall with FirewallD.
  How to replace Shorewall with FirewallD on ROSA Desktop Fresh R4