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-l...
FOSS: https://gitgud.io/fatchan/haproxy-protection
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-l...
FOSS: https://gitgud.io/fatchan/haproxy-protection