https://capodieci.com/2019/11/10/on-p2p-vpn-and-ddos%e2%80%8a-%e2%80%8awhen-a-p2p-service-such-as-a-blockchain-gets-attacked-by-ddos/
On P2P, VPN, and DDOS?—?When a P2P service, such as a Blockchain, gets attacked by DDOS