4 ms·

Serving a captcha page is more work than serving a static page.

• monort 12y ago
  You can block with firewall IPs of users, who didn't solve captcha. You will get only SYNs from incoming connection requests then.
  • mikey_p 12y ago
    You don't really understand the distributed part of DDoS. I've had services taken down my attacks and when doing a post mortem we could see the increase in traffic, but when accounting for frequency, our office was still the main user.