Iptables missing files?

Ask Fedora
1

Just starting out with fedora 32. I don’t know firewalld well enough yet, so I added rules to iptables just to get started. However, the files in /etc/sysconfig discussed below are missing. How can these be installed? I’d like my rules to persist over a reboot.

In the default configuration, stopping or restarting the iptables service will discard the running configuration. This behavior can be changed by setting IPTABLES_SAVE_ON_STOP="yes" or IPTABLES_SAVE_ON_RESTART="yes" in /etc/sysconfig/iptables-config .

https://docs.fedoraproject.org/en-US/quick-docs/how-to-edit-iptables-rules/

I know to learn firewalld, it’s on the list.

2

If I am not wrong, in Fedora 32, iptables was replaced with nftables.

See:

2 Likes
3

Kind of confusing as iptables is functional, but I see your point, it seems to be getting buried:

# which iptables
/usr/sbin/iptables

# ls -lt /usr/sbin/iptables
lrwxrwxrwx. 1 root root 26 Apr 22 18:35 /usr/sbin/iptables -> /etc/alternatives/iptables
alternatives]# ls -lt iptables
lrwxrwxrwx. 1 root root 25 Apr 22 18:35 iptables -> /usr/sbin/iptables-legacy

# ls -lt /usr/sbin/xtables-legacy-multi
-rwxr-xr-x. 1 root root 102360 Feb 12 16:27 /usr/sbin/xtables-legacy-multi

However, it works, it’s just not persistent. I guess I’ll just have to learn some new stuff to get the fw rules to survive a reboot.

OK, lazy me, is there any way to get iptables rules to persist while I’m digging into firewalld and nftables?

Again, many thanks for getting me off the ground.

4

Fedora uses firewalld, so best to look into that:

https://docs.fedoraproject.org/en-US/quick-docs/firewalld/

1 Like
5

use firewall-config and set your rules.
Then under “Options” click “Runtime To Permanent”

6

Trying to dig into nft, but firewalld rich-rules do not seem to work. Where is the best place to ask for nft help?

7

There’s a lot of info in these pages, but I don’t really see ways to ask for help:

https://netfilter.org/projects/nftables/

https://wiki.nftables.org/wiki-nftables/index.php/Main_Page

8

thanks all, I’ll start a another thread here and see if I can flatten the learning curve.

1 Like
9

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