Question about the standard firewall rules

There are some rules that were already set in the Turris Omnia via standard. But I am not sure if I need them?
Could someone help me to check if I really need them? For example, I have IP6 disabled, so I could easily disable the IP6 rules, right?
What about the others? Will I get any problems on the Turris if I disable any of them? Will any features stop working?

My Turris Omnia is connected directly to a modem, no ISP router in between.