cloudflare防火墙规则设定代码，全能防御恶意流量

最近导航网站经常被流量攻击，疯狂跑网站流量，两个小时20G左右吧，一直困扰着我

添加防火墙规则表达式

第一（拦截规则）

(cf.threat_score ge 5 and not cf.client.bot) or (not http.request.version in {“HTTP/1.2” “HTTP/2” “HTTP/3” “SPDY/3.1”}) or (not http.user_agent contains “Mozilla/”)

第二（放行规则）

(cf.client.bot) or (http.user_agent contains “duckduckgo”) or (http.user_agent contains “facebookexternalhit”) or (http.user_agent contains “Feedfetcher-Google”) or (http.user_agent contains “LinkedInBot”) or (http.user_agent contains “Mediapartners-Google”) or (http.user_agent contains “msnbot”) or (http.user_agent contains “Slackbot”) or (http.user_agent contains “TwitterBot”) or (http.user_agent contains “ia_archive”) or (http.user_agent contains “yahoo”)