How can I make iptables rules survive a reboot?
How can I make iptables rules persistent?
On Ubuntu I could install the iptables-persistent package, set up my iptables rules, and then run:
sudo iptables-save | sudo tee /etc/iptables/rules.v4 > /dev/null
What is the Fedora equivalent?
I think it is the same command on Fedora Linux. The path to the config file is different though. It is /etc/sysconfig/iptables as can be seen in /usr/lib/systemd/system/iptables.service (you may need to install the iptables-services package if you don’t have the aforementioned files).
Beware that Fedora Linux is deprecating iptables in favor of nftables. The main nftables config file is /etc/sysconfig/nftables.conf.
It’s best avoid using raw iptables/nftables rules, specifically for newbies.
Otherwise subsystems like virtualization may not work properly.
The recommended firewall solution is firewalld:
Using firewalld :: Fedora Docs