https://github.com/Fairlay/Bitcoin-Betting/blob/main/Running%20a%20Node.mdWhen you download the files that will allow you to run the node you will find a default IP Ban List. If your IP is in this list, you cannot connect to a Node. This is just a precautionary measure to protect Node operators because US authorities (lawfully or unlawfully is yet to be decided) targeted DeFi projects recently.