Cloudflare屏蔽

Double`C 收录于技术和 Cloudflare

2021-05-08 约 900 字预计阅读 4 分钟

Cloudflare屏蔽方法

用法

在Cloudflare WAF里添加自定义规则，点击Edit expressions，直接粘贴下面的规则。

1. 机器人屏蔽（直接block）

阻止流行的不良用户代理
按端口阻止连接（通常只有僵尸bot会这样做）
阻止过时版本的 HTTP (1.0)
阻止 cloudflare 标记的不良威胁
阻止不良方法请求
拦截可疑的 X-Forwarded-For
阻止来自 Tor 网络的请求
拦截 ASN 列表中最著名的代理搜刮网站
阻止非标准 cookie

下面的代码块很长，注意全选：

1

(http.request.version in {"HTTP/1.0"} and not cf.client.bot) or (http.user_agent eq "") or (http.user_agent eq " ") or (http.user_agent eq "-") or (http.user_agent eq "'") or (http.user_agent contains "/x/") or (http.user_agent contains "'XOR(") or (http.user_agent contains "ALittle") or (http.user_agent contains "got (") or (http.user_agent contains "quic-go-HTTP") or (http.user_agent contains "Go-http-client") or (http.user_agent contains "fasthttp") or (http.user_agent contains "python") or (http.user_agent contains "java") or (http.user_agent contains "PHP") or (http.user_agent contains "Nmap") or (http.user_agent contains "scrapy" and not cf.client.bot) or (http.user_agent contains "spider" and not cf.client.bot) or (http.user_agent contains "crawl" and not cf.client.bot) or (http.user_agent contains "bot" and not http.user_agent contains "bing" and not http.user_agent contains "google" and not http.user_agent contains "yandex" and not http.user_agent contains "duckduckgo" and not http.user_agent contains "facebook" and not http.user_agent contains "linkedIn" and not http.user_agent contains "twitter" and not http.user_agent contains "yahoo" and not cf.client.bot)  or (not http.request.method in {"GET" "POST" "HEAD"} or (http.x_forwarded_for contains "192.0.") or (http.x_forwarded_for contains ".0.0") or (ip.geoip.country in {"T1" "XX"} and not http.request.version in {"HTTP/2" "HTTP/3" "SPDY/3.1"} and not cf.client.bot) or (http.user_agent contains "lient" and http.user_agent contains "ttp") or (http.user_agent contains "libweb") or (http.user_agent contains "libwww") or (http.user_agent contains "wrk") or (http.user_agent contains "hey/") or (ip.geoip.asnum in {14061 60631 28438 60592 30823 4134 32505 27715 22773 131090 135905 55330 16629 4755 53363 34549 135330 47285 60798 207590 203087 198651 43289 14576 207319 201978 208425 201094 18978 52000 204601 199883 8220 36351 45011 8560 23969 45629 20207 6471 8075 45899 31400 208556 12271 7552 26496 21769 6876 45102 5617 199490 35816 131293 20860 31898 131428 8881 25429 29802 4788 3326 39284 13448 46484 174 577 29286 5056 9009 63949 212708 40788 12989 11351 11426 7029 42652 18403 54538 209 62044 3269 395003 8100 4190 12874 19740 197540 45458 136258 50837 51852 4826 195 49588 57613 34248 197099 29287 29066 30083 9534 42905 35804 45012 7303 25961 61317 5610 35320 262187 263693 20552 266706 49327 47232 32098 28429 3255 28431 14117 18734 24088 263196 41096 52228 8069 398101 28725 132196 61154 58199 6877 265537 32097 62240 3329 6830 133199 12334 270110 22884 54600 213375 206092 41009 213251 36444} and not http.request.version in {"HTTP/2" "HTTP/3" "SPDY/3.1"} and not cf.client.bot)  or (http.cookie contains "cf_use_ob=" and not http.cookie contains "0" and not http.cookie contains "80" and not http.cookie contains "443" and not cf.client.bot)

触发上述规则后的动作请选：block

2. 漏洞利用修复屏蔽（直接block）

阻止 SQL 漏洞利用
阻止 XSS 漏洞利用
阻止流行的 PHP 漏洞利用

(http.request.uri.query contains ")/*") or (http.request.uri.query contains ")--") or (http.request.uri.query contains "benchmark(") or (http.request.uri.query contains "'0:0:20'") or (http.request.uri.query contains "MD5(") or (http.request.uri.query contains "%20waitfor%20delay%20") or (http.request.uri.query contains "%22") or (http.request.uri.query contains "%20/*") or (http.request.uri.query contains "%20--") or (http.request.uri.query contains "%20%23") or (http.request.uri.query contains ")%23") or (http.request.uri.query contains "script>") or (http.request.uri.query contains "%40") or (http.request.uri.query contains "%00") or (http.request.uri.query contains "<?php") or (http.request.uri.query contains "0x00") or (http.request.uri.query contains "0x08") or (http.request.uri.query contains "0x09") or (http.request.uri.query contains "0x0a") or (http.request.uri.query contains "0x0d") or (http.request.uri.query contains "0x1a") or (http.request.uri.query contains "0x22") or (http.request.uri.query contains "0x25") or (http.request.uri.query contains "0x27") or (http.request.uri.query contains "0x5c") or (http.request.uri.query contains "0x5f") or (http.request.uri.query contains "SELECT") or (http.request.uri.query contains "concat") or (http.request.uri.query contains "union") or (http.request.uri.query contains "0x50") or (http.request.uri.query contains "DROP") or (http.request.uri.query contains "WHERE") or (http.request.uri.query contains "ONION") or (http.request.uri.query contains "0x3c62723e3c62723e3c62723e") or (http.request.uri.query contains "0x3c696d67207372633d22") or (http.request.uri.query contains "OR") or (http.request.uri.query contains "0x3e") or (http.request.uri.query contains "<img") or (http.request.uri.query contains "<image") or (http.request.uri.query contains "document.cookie") or (http.request.uri.query contains "onerror()") or (http.request.uri.query contains "alert(") or (http.request.uri.query contains "window.") or (http.request.uri.query contains "String.fromCharCode(") or (http.request.uri.query contains "javascript:") or (http.request.uri.query contains "onmouseover=") or (http.request.uri.query contains "<BODY onload") or (http.request.uri.query contains "<style") or (http.request.uri.query contains "svg onload")

触发上述规则后的动作请选：block

3. 可疑的methods（强制验证码不要直接block）

(http.user_agent eq "109e15941c57") or (http.user_agent eq "d1b2df322c91") or (http.request.uri.query eq "--+") or (http.user_agent eq "84bd2cfee733") or (http.request.uri.query eq "d=1") or (http.user_agent eq "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)") or (http.request.uri.query eq "daksldlkdsadas=1") or (http.request.full_uri contains "\\x03\\x00\\x00/*\\xE0\\x00\\x00\\x00\\x00\\x00Cookie: mstshash=Administr") or (http.request.full_uri contains "\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00") or (http.request.full_uri contains "T\\x83\\xF8\\xCCu\\x18\\xA8\\xABw*w\\xF5j\\x91\\xE4[") or (http.request.full_uri contains "-\\x11\\xBERB#:\\xE4.\\xC6\\xFFHA\\x1A\\x03\\xD7") or (http.request.full_uri contains "MGLNDD_") or (http.request.full_uri contains "\\x03\\x00\\x00\\x13\\x0E\\xE0\\x00\\x00\\x00\\x00\\x00\\x01\\x00\\x08\\x00\\x03\\x00\\x00\\x00") or (http.request.full_uri contains "fI4y") or (http.request.full_uri contains "o\\xFA\\xC0\\xBE\\xB8\\xC0\\xA4\\xC9\\x89\\xA2\\xC2\\x8F\\x83\\xAF\\x91\\x97\\xBE\\xCD\\xB9\\xCF\\xAC\\x9B\\xB0\\xAB\\xA0\\xB6\\xB1\\xAA\\x9D\\x9C\\x9F\\x96\\x8D\\x93\\xCE\\xB4\\xB3\\xB5\\x98\\xCD\\xA6\\xFA\\xFA\\xFA\\xFA\\x12\\xFD\\xD8\\xF8\\xFA\\xFA\\xC2\\xFA\\xFA\\xFA\\xFA\\x1Af\\xEC\\xF9\\xFA\\xFA\\xFA\\xFA\\xFB\\xE5q\\xF2\\xFA\\xFA\\xFA\\xFA\\xFA\\xFA\\xF9wh\\x97ui\\xBA\\xEA=E\\xF0\\x1B/\\xA7XJ\\xF11Y\\x0B\\xBF\\xB1K\\x1F\\x00\\xFA\\xF8\\xAF5Y\\xDB\\xA1\\xA2 \\xE00\\xCC\\xBAU]<\\x15\\x14\\xBA\\xC7W7c\\x02\\x98\\xC996\\x95\\x1C\\xC5\\x164yR\\xE7\\x8C\\x90\\x8E\\x06\\x92w\\xCD\\xE9\\x0E\\x14!\\x19\\x87KE\\xE1\\x86 ,)\\xEA\\x85_\\x16I(\\x86\\x8B?\\xADXx\\xD7\\xE7\\xB67\\x83\\xF1\\xFC;\\x83\\xC8\\x0F\\xAE\\xDD\\x1A\\xCA\\xBF\\xD3\\xF0\\x98\\xAA\\xD9=\\xD0\\xD0\\xD6\\xEF\\xABQZ`\\xBCrhc@[\\x9Cz\\xEA\\x8AJ|\\x8F\\xEF\\x86V\\x11\\xDC\\xBB\\x5C\\xF8T\\xF3=\\x9B\\xAF\\x11\\xBD8\\x96\\xAD\\xE7e~`ov\\xCC\\xB6\\xCA\\xDE\\xB78\\xDC\\xD88w9\\x91\\x8C\\xD1\\xDE/\\x98\\xCA\\x8D%\\xDC\\x85+sb\\xAE\\xE5&\\xCA\\x08\\x06\\xFF\\x9Ev\\xA5\\x96\\xED\\x0F\\xBC\\xEA2\\xFA\\x1F7\\x03\\xC9g\\x83)TF$H\\xA8\\xD2\\xA24\\x91\\x80\\xABg\\x0CF+\\xBFx*w\\x19\\x01\\x0E\\xFF\\xCF\\x1B\\xA8\\x9AJrF.\\x0B\\x9D\\x84\\xF2\\xEE\\x80Y\\x18\\xD4\\x12\\xFE\\x14\\x89\\x9B\\x8C\\x9AL6\\x17\\x09\\xF25\\x5C\\xEDb\\x02\\x89\\xCD\\xA7|\\xC9zL\\x97\\x81\\x92\\x96\\xA3\\xC4g\\xB4(\\xE3k\\x82Gk\\xC1\\x90B\\xE6][\\xE1\\x02\\x9B\\x86?Tua\\x1C\\xE0\\xFC\\x9F\\x8D\\xEB\\x01\\xAB\\xC0\\xE5\\xD6\\x98\\xD5\\xE0<\\x93\\xEA\\x00\\x8DT\\xE9\\x05\\x04y-G\\x0E\\xC5R\\x0E\\x18\\xF4\\xC1\\xD6\\x8E\\xBDi\\xBBf\\xBC1Z-\\xFD\\x90N\\x16\\x81\\x07C*mk\\x11\\xBCZ\\x02\\x85\\x95a\\xDE\\xAB\\xA8\\xB7\\xA3\\xA7;\\x19\\xDE\\xB3\\xD7") or (http.request.full_uri contains "\\x00\\x00\\x00") or (http.request.full_uri contains "\\x02") or (http.request.full_uri contains "v\\xF0m\\xB0b\\xAF\\x8F\\x883\\xE4U)8\\x99E\\x14") or (http.request.full_uri contains "\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00") or (http.request.full_uri contains "!\\xFA\\xAC\\x8E\\x12^\\x87\\x1F9E\\xF8\\xBBT5\\x18\\xBF\\xE3\\x0Fc\\xB0\\xC3+!\\xB0y\\xA7\\xE0\\x1B\\xCF+!\\xB0\\xC2/c\\xB0\\xC3+\\x22\\xB8\\xC3+!\\xB0\\xC3+!\\xB0i+!\\xB0\\xC3+") or (http.request.full_uri contains "\\x00\\x0E8\\x89\\x99\\xDCZFS\\xEDM\\x00\\x00\\x00\\x00\\x00") or (http.request.full_uri contains "j\\x00\\xFD U\\x8De\\xC2G\\xB6\\x9A\\x83g\\xA3-\\xB6") or (http.request.full_uri contains "SSTP_DUPLEX_POST") or (http.request.full_uri contains "sra_{BA195980-CD49-458b-9E23-C84EE0ADCD75}")

触发上述规则后的动作请选：interactive challenge

4. 可疑的网络和客户端（强制验证码不要直接block）

检查过期的 HTTP 版本（1.1、1.2）
检查允许大量恶意流量的国家/地区
检查 cloudflare 标记的不良威胁
检查不安全请求（非 SSL 请求）
检查来源不明的请求（无引用源）

(http.request.version in {"HTTP/1.1" "HTTP/1.2"} and not http.request.version in {"HTTP/2" "HTTP/3" "SPDY/3.1"} and not ip.geoip.asnum in {13238 15169 8075 32934} and not cf.client.bot) or (cf.threat_score ge 10 and not cf.client.bot) or (not ssl) or (ip.geoip.continent in {"AF" "AS" "AN" "EU" "NA" "OC" "SA" "RU" "MD" "BY" "UA"} and not ip.geoip.asnum in {13238 15169 8075 47541 32934} and not cf.client.bot) or (http.referer eq "" and not cf.client.bot)

触发上述规则后的动作请选：interactive challenge

在cloudflare-rules基础上做了一些改进。

8G Firewall

另外推荐8G Firewall（和上面的CF没有关系）适合WP站，但别的站也可以用。
8G Firewall 说明
 8G Firewall 下载
把这些内容添加到 .htaccess 里就行了。

來源