Sudo iptables -S brings way too many terms

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  1. Create a new instance on Oracle (Canonical Ubuntu 20)
  2. Connect to your server
  3. Follow these exact steps. Use sudo su in order to be able to add and save the new firewall settings

I just did it from the start and it works perfectly:

Hostname for your Discourse? [discourse.example.com]: mydomain.com

Checking your domain name . . .
Connection to mydomain.com succeeded.
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