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Firewall blocking NFS even though ports are open Jan 25, 2010 How to use IPTables Instead of firewalld for Fedora 21-23 As of Fedora 18, the iptables service has been replaced by firewalld. For those that prefer managing static firewall rules with iptables, follow these steps to revert back to iptables. Prerequisites. You will need to have a Fedora 21, 22, or 23 virtual private server provisioned and root permissions. Using IPTables instead of firewalld How to Set Up a Firewall with FirewallD on CentOS 7 | Linuxize Nov 11, 2019
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