Hi Terry,

> throws up the idea of using iptables-save/iptables-restore but also
> iptables-persistent.

To add to what others have said, iptables-persistent looks like a
wrapper around iptables-{save,restore}.
https://salsa.debian.org/debian/iptables-persistent/-/blob/debian/plugins/15-ip4tables

> Is there a right way?

Go with what's simplest which is correct and suffices.  :-)

-- 
Cheers, Ralph.

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