For the guy asking about firewalld

https://www.redhat.com/sysadmin/how-to-configure-firewalld

( disclaimer: i dont use it. I dont even have a firewall enabled on my servers. Only 2 ports are open on my external facing router and I have a upstream ngnix proxy that does all the incoming for me.

Still reading the details but seems cloud-flare will stop hosting an IPFS gateway and now its going to be 'transferred' to something called " interplanetary shipyard " Something fairly new it seems, and somehow tied to the IPFS project.

While it was nice that cloud-flare was offering bandwidth 'to the cause', they were also blocking addresses on demand, both for IPFS and Etherium..  Scumbag *ers. So it might be a good change. ( or worse, donno yet )