>What would some good examples of those be? There is haproxy-protection, which I believe is the basis of Kiwiflare. Clients making new connections have to solv

>What would some good examples of those be? There is haproxy-protection, which I believe is the basis of Kiwiflare. Clients making new connections have to solve a proof-of-work challenge that take about 3 seconds of compute time. Enterprise: https://www.haproxy.com/solutions/ddos-protection-and-rate-limiting https://www.haproxy.com/solutions/ddos-protection-and-rate-l... FOSS: https://gitgud.io/fatchan/haproxy-protection https://gitgud.io/fatchan/haproxy-protection