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docs: Remove firewalld zone instructions 

These were related to migrating to the `docker` zone support in new moby releases since integration landed in 2020H2.
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polarathene 2023-08-31 14:55:11 +12:00
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10
content/network/packet-filtering-firewalls.md
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@ -160,16 +160,6 @@ on your system with `--iptables` enabled, Docker automatically creates a `firewa
zone called `docker` and inserts all the network interfaces it creates (for example,
`docker0`) into the `docker` zone to allow seamless networking.
Consider running the following `firewalld` command to remove the docker interface from the zone.
```console
# Please substitute the appropriate zone and docker interface
$ firewall-cmd --zone=trusted --remove-interface=docker0 --permanent
$ firewall-cmd --reload
```
Restarting `dockerd` daemon inserts the interface into the `docker` zone.
## Docker and ufw
[Uncomplicated Firewall](https://launchpad.net/ufw)