{"id":3241,"date":"2026-07-26T15:37:06","date_gmt":"2026-07-26T07:37:06","guid":{"rendered":"https:\/\/systw.net\/note\/?p=3241"},"modified":"2026-07-26T15:37:09","modified_gmt":"2026-07-26T07:37:09","slug":"origin-ip-discovery","status":"publish","type":"post","link":"https:\/\/systw.net\/note\/archives\/3241","title":{"rendered":"Origin IP Discovery"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5728\u6ef2\u900f\u6e2c\u8a66\u4e2d\uff0c\u7e5e\u904e CDN\uff08Content Delivery Network\uff09\u5c0b\u627e\u5f8c\u7aef\u7684\u771f\u5be6\u6e90\u7ad9\u662f\u975e\u5e38\u7d93\u5178\u4e14\u95dc\u9375\u7684\u4e00\u6b65\u3002\u53ea\u8981\u627e\u5230\u6e90\u7ad9IP\uff0c\u653b\u64ca\u8005\uff08\u6216\u6e2c\u8a66\u4eba\u54e1\uff09\u5c31\u80fd\u7e5e\u904e CDN \u7684 WAF\u3001DDoS \u9632\u79a6\uff0c\u76f4\u63a5\u5c0d\u76ee\u6a19\u4f3a\u670d\u5668\u9032\u884c\u6f0f\u6d1e\u5229\u7528\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u662f\u5e38\u898b\u4e14\u6709\u6548\u7684\u5e7e\u7a2e\u5c0b\u627e\u6e90\u7ad9IP \u7684\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6b77\u53f2\u8a18\u9304\u67e5\u8a62 <\/li>\n\n\n\n<li>\u7a7a\u9593\u641c\u5c0b\u5f15\u64ca\uff1a \u5168\u7db2\u6191\u8b49\u6383\u63cf\uff0c\u7db2\u9801\u5716\u6a19\uff0c\u7db2\u9801\u5167\u5bb9\u6307\u7d0b<\/li>\n\n\n\n<li>\u914d\u7f6e\u932f\u8aa4 \uff1a\u89f8\u767c CDN \u7bc0\u9ede\u932f\u8aa4\uff0cIPv6 \u907a\u6f0f\uff0c\u7279\u5b9a\u6a94\u6848\u6d29\u6f0f\uff0c\u4ee3\u78bc\u8207\u7d44\u614b\u6d29\u6f0f<\/li>\n\n\n\n<li>\u5b50\u7db2\u57df\u641c\u96c6 <\/li>\n\n\n\n<li>\u5229\u7528\u4f3a\u670d\u5668\u767c\u8d77\u7684\u5916\u9023\u8acb\u6c42 <\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u662f\u9a57\u8b49\u6e90\u7ad9IP\u7684\u5e38\u7528\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4fee\u6539 \/etc\/hosts<\/li>\n\n\n\n<li>curl &#8211;resolve<\/li>\n\n\n\n<li>curl -H<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u6b77\u53f2\u8a18\u9304\u67e5\u8a62 <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f88\u591a\u7db2\u7ad9\u662f\u5728\u4e0a\u7dda\u4e00\u6bb5\u6642\u9593\u5f8c\u624d\u52a0\u88dd CDN \u7684\u3002\u9019\u610f\u5473\u8457\u5728\u820a\u7684 DNS \u7d00\u9304\u4e2d\uff0c\u53ef\u80fd\u76f4\u63a5\u5beb\u8457\u771f\u5be6\u7684\u4f3a\u670d\u5668 IP\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4f5c\u6cd5\uff1a<\/strong> \u4f7f\u7528\u5c08\u9580\u6536\u96c6 DNS \u6b77\u53f2\u7d00\u9304\u7684\u5e73\u53f0\uff0c\u641c\u5c0b A \u7d00\u9304\u7684\u8b8a\u66f4\u6b77\u53f2\u3002<\/li>\n\n\n\n<li><strong>\u5e38\u7528\u5de5\u5177\/\u7db2\u7ad9\uff1a<\/strong> \n<ul class=\"wp-block-list\">\n<li>SecurityTrails\/DNSTrails<\/li>\n\n\n\n<li>ViewDNS.info<\/li>\n\n\n\n<li>Censys \/ Shodan\uff08\u67e5\u770b\u6b77\u53f2\u6191\u8b49\u7d81\u5b9a\uff09<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7bc4\u4f8b<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u5982\u8981\u5c0b\u627ewww.shop.com\u7684\u6e90\u7ad9<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u67e5\u8a62\u76ee\u524d\u7684\u73fe\u72c0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8f38\u5165 <code>nslookup www.shop.com <\/code>\uff0c\u5f97\u5230\u7684\u7d50\u679c\u662f 104.21.5.10\u3002\u67e5\u4e00\u4e0b IP \u767c\u73fe\u9019\u662f Cloudflare\uff08CDN\uff09\u7684\u4f3a\u670d\u5668\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u7ffb\u95b1\u820a\u7d00\u9304<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6253\u958b SecurityTrails \u7db2\u7ad9\uff0c\u641c\u5c0b www.shop.com \u4e26\u9ede\u64ca Historical Data (\u6b77\u53f2\u8cc7\u6599)\uff0c\u67e5\u5230\u4ee5\u4e0b\u8cc7\u8a0a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>\u8b8a\u66f4\u65e5\u671f (Date)<\/strong><\/td><td><strong>\u89e3\u6790\u985e\u578b<\/strong><\/td><td><strong>\u7d00\u9304\u5167\u5bb9 (IP \/ Domain)<\/strong><\/td><td><strong>\u5099\u8a3b\u5206\u6790<\/strong><\/td><\/tr><\/thead><tbody><tr><td>2026-01-01 \u81f3\u4eca<\/td><td>A Record<\/td><td>104.21.5.10<\/td><td>\u9019\u662f\u52a0\u88dd Cloudflare CDN \u5f8c\u7684 IP<\/td><\/tr><tr><td>2025-06-01 ~ 2025-12-31<\/td><td>A Record<\/td><td>203.0.113.88<\/td><td>\u9019\u662f\u5728\u639b CDN \u524d\u7684 IP<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u95dc\u9375\u9a57\u8b49 <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528 <code>curl<\/code> \u6e2c\u8a66\u547d\u4ee4\uff0c\u5f37\u5236\u6307\u5b9a\u8981\u9023\u7dda\u5230\u9019\u500b\u820a IP\uff0c\u4f46\u8981\u6c42\u5b58\u53d6 www.shop.com\u7684\u5167\u5bb9\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>curl -H \"Host: www.shop.com\" http:\/\/203.0.113.88<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u56de\u50b3\u7d50\u679c\u6210\u529f\u6293\u5230\u4e86 www.shop.com \u7684\u9996\u9801 HTML \u539f\u59cb\u78bc\uff01\u9019\u4ee3\u8868 203.0.113.88 \u5c31\u662fOrigin IP\uff0c\u4e14\u4f3a\u670d\u5668\u4f9d\u7136\u5728\u904b\u4f5c\u3002\u8868\u793a\u7e5e\u904e\u4e86 CDN\uff0c\u53ef\u4ee5\u76f4\u63a5\u5c0d\u9019\u500b IP \u9032\u884c Port \u6383\u63cf\u6216\u6f0f\u6d1e\u653b\u64ca\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7a7a\u9593\u641c\u5c0b\u5f15\u64ca<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5168\u7db2\u6191\u8b49\u6383\u63cf\uff08SSL\/TLS Certificate Matching\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7576\u904b\u7dad\u4eba\u54e1\u70ba\u4e86\u8b93 CDN \u8207\u6e90\u7ad9\u4e4b\u9593\u50b3\u8f38\u52a0\u5bc6\uff0c\u6703\u5e6b\u6e90\u7ad9\u7533\u8acb\u4e86 SSL \u6191\u8b49\uff0c\u9019\u5f35\u6191\u8b49\u7684\u7533\u8acb\u7d00\u9304\u6703\u88ab\u5f37\u5236\u8a18\u9304\u5728\u516c\u958b\u7684\u65e5\u8a8c\u4e2d\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f5c\u6cd5\uff1a \u5229\u7528CT Log\uff08\u6191\u8b49\u900f\u660e\u5ea6\u65e5\u8a8c\uff09\u641c\u5c0b\uff0c\u6216\u50cfShodan\u3001Censys \u6216 Zoomeye \u9019\u985e\u5168\u7db2\u6383\u63cf\u5f15\u64ce\u3002<\/li>\n\n\n\n<li>\u9019\u6703\u76f4\u63a5\u5217\u51fa\u5168\u4e16\u754c\u6240\u6709\u5b89\u88dd\u4e86\u8a72\u8b49\u66f8\u7684\u4f3a\u670d\u5668\uff0c\u901a\u5e38\u771f\u6b63\u7684\u6e90\u7ad9\u5c31\u6703\u6df7\u5728\u88e1\u9762\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u7bc4\u4f8b\uff1a<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u5982\u8981\u5c0b\u627evictim-finance.com\u7684\u6e90\u7ad9<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\u958b\u555f\u6191\u8b49\u65e5\u8a8c\u67e5\u8a62\u7db2\u7ad9\uff08\u5982 <a href=\"https:\/\/crt.sh\" target=\"_blank\" rel=\"noreferrer noopener\">crt.sh<\/a>\uff09\u3002<\/li>\n\n\n\n<li>\u5728\u641c\u5c0b\u6b04\u8f38\u5165\uff1a<code>%.victim-finance.com<\/code>\uff08% \u662f\u842c\u7528\u5b57\u5143\uff09\u3002<\/li>\n\n\n\n<li>\u6aa2\u67e5\u641c\u5c0b\u7d50\u679c\u4e2d\uff0c\u9ede\u64ca\u6bcf\u5f35\u6191\u8b49\u7684ID\uff0c\u67e5\u770b Subject Alternative Name (SAN) \u6b04\u4f4d\u3002<\/li>\n\n\n\n<li>\u5728\u67d0\u5f35\u904e\u671f\u7684\u6216\u662f\u65b0\u7533\u8acb\u7684\u6191\u8b49\u4e2d\uff0c\u4f60\u767c\u73fe\u4e86\u4ee5\u4e0b\u5167\u5bb9<\/li>\n<\/ol>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>DNS Name:<\/strong> *.victim-finance.com <br><strong>DNS Name:<\/strong> victim-finance.com <br><strong>DNS Name:<\/strong> origin-web-prod.internal-cloud-infrastructure.net  <\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u9019\u4ee3\u8868\u904b\u7dad\u4eba\u54e1\u5728\u7533\u8acb\u6191\u8b49\u6642\uff0c\u53ef\u80fd\u628a\u516c\u958b\u7db2\u57df\u8ddf\u90a3\u500b\u96b1\u853d\u7684\u6e90\u7ad9\u7db2\u57df\u5beb\u5728\u4e86\u540c\u4e00\u5f35\u6191\u8b49\u4e0a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5.\u9a57\u8b49origin-web-prod.internal-cloud-infrastructure.net\u7684IP<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dig +short origin-web-prod.internal-cloud-infrastructure.net<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u78ba\u8a8d\u4e0d\u662fCDN IP\uff0c\u53ef\u4ee5\u6aa2\u67e5\u662f\u5426\u6e90\u7ad9\uff0c\u53ef\u7528\u4ee5\u4e0b\u6307\u4ee4 <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>curl -i -H \"Host: victim-finance.com\" https:\/\/origin-web-prod.internal-cloud-infrastructure.net<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u56de\u50b3\u7684 HTML \u539f\u59cb\u78bc\u3001\u6a19\u982d\uff08Headers\uff09\u8207\u516c\u958b\u7684victim-finance.com\u4e00\u6a23\uff0c\u90a3\u5c31\u8868\u793a\u627e\u5230\u6e90\u7ad9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7db2\u9801\u5716\u6a19\uff08Favicon Hash\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6e90\u7ad9\u4f3a\u670d\u5668\u4e0a\u901a\u5e38\u4e5f\u958b\u8457 80 \u6216 443 \u57e0\u3002\u5373\u4f7f\u5b83\u7d81\u5b9a\u4e86\u4e0d\u540c\u7684\u57df\u540d\uff0c\u53ea\u8981\u5b83\u4e0a\u9762\u7684\u7db2\u9801\u6a94\u6848\uff08\u4f8b\u5982\u7db2\u7ad9\u7684 Favicon\u3001\u7279\u5b9a\u7684\u975c\u614b\u5716\u7247\u6216\u7279\u6b8a\u7684 404 \u9801\u9762\uff09\u8207\u516c\u958b\u7db2\u7ad9\u4e00\u6a21\u4e00\u6a23\uff0c\u5c31\u80fd\u900f\u904e\u5927\u6578\u64da\u7279\u5fb5\u6bd4\u5c0d\u51fa\u4f86\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f5c\u6cd5\uff1a \u4e0b\u8f09\u516c\u958b\u7db2\u7ad9\u7684 favicon.ico\uff0c\u4e26\u8a08\u7b97\u5176 MurmurHash \u503c\u3002 \u5728\u5230 Shodan \u6216 Censys \u7b49\u5229\u7528\u8a72 Hash \u503c\u9032\u884c\u5168\u7db2\u641c\u5c0b\u3002\n<ul class=\"wp-block-list\">\n<li>Shodan\u8a9e\u6cd5\u7bc4\u4f8b\uff1a <code>http.favicon.hash:-1507567067<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u9019\u6703\u76f4\u63a5\u5217\u51fa\u5168\u4e16\u754c\u6240\u6709\u64c1\u6709\u9019\u500b\u76f8\u540c\u5716\u6a19\u7684 IP \u6216\u7db2\u57df\uff0c\u88e1\u9762\u901a\u5e38\u5c31\u6703\u593e\u96dc\u8457\u90a3\u500b\u300c\u4e0d\u540c\u57df\u540d\u300d\u7684\u6e90\u7ad9\u4f3a\u670d\u5668\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7bc4\u4f8b\uff1a<\/h4>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\u4e0b\u8f09\u76ee\u6a19\u7db2\u7ad9\u7684\u5716\u6a19\u4e26\u7528 Python \u7b97\u51fa\u5176\u7279\u5b9a Hash \u503c\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>import mmh3\nimport requests\nimport codecs\n\nresponse = requests.get('https:\/\/www.victim-finance.com\/favicon.ico')\nfavicon = codecs.encode(response.content, 'base64')\nhash_value = mmh3.hash(favicon)\nprint(hash_value)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u8a2d\u7b97\u51fa\u4f86\u7684\u7d50\u679c\u662f\uff1a-123456789\u3002<\/p>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u5c07\u9019\u500b Hash \u503c\u62ff\u5230 Shodan \u6216 Censys \u641c\u5c0b\uff1a\n<ul class=\"wp-block-list\">\n<li>Shodan \u8a9e\u6cd5\u7bc4\u4f8b\uff1a <code>http.favicon.hash:-123456789<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u641c\u5c0b\u7d50\u679c\u8dd1\u51fa\u5169\u500b IP\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>104.26.0.1\uff08\u9019\u986f\u793a\u70ba Cloudflare \u7684 IP\uff09<\/li>\n\n\n\n<li>54.210.X.X\uff08\u9019\u986f\u793a\u70ba AWS \u7684 IP\uff0c\u4e14\u53cd\u67e5\u57df\u540d\u70ba vtm-fn-origin.ap-east-1.elb.amazonaws.com\uff09 <\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u7528\u4ee5\u4e0b\u9a57\u8b4954.210.X.X\uff0c\u5982\u679c\u8fd4\u56de\u5167\u5bb9\u4e00\u6a23\u5c31\u8868\u793a\u70baOrigin IP<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>curl -i -H \"Host: victim-finance.com\" 54.210.X.X<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7db2\u9801\u5167\u5bb9\u6307\u7d0b\uff08HTML Response Fingerprinting\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6709\u4e9b\u6e90\u7ad9\u96d6\u7136\u96b1\u85cf\u5728\u53e6\u4e00\u500b\u57df\u540d\u4e0b\uff0c\u4f46\u7576\u4f60\u76f4\u63a5\u7528 IP \u6216\u8a72\u5167\u90e8\u57df\u540d\u5b58\u53d6\u5b83\u6642\uff0c\u5b83\u56de\u50b3\u7684 HTTP \u6a19\u982d\u3001HTML \u539f\u59cb\u78bc\u4e2d\u7684\u7279\u5b9a\u95dc\u9375\u5b57\uff08\u5982\u7368\u7279\u7684 JavaScript \u8b8a\u6578\u3001\u7279\u5b9a\u7684 Google Analytics \u8ffd\u8e64\u78bc\uff08UA-XXXXX-Y\uff09\u3001\u5099\u8a3b\u3001\u751a\u81f3\u662f\u7279\u5b9a\u7684\u4f3a\u670d\u5668\u62a5\u9519\u8cc7\u8a0a\uff09\u6703\u66b4\u9732\u8eab\u4efd\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f5c\u6cd5\uff1a \u5229\u7528\u81ea\u52d5\u5316\u5de5\u5177\u641c\u96c6\u76ee\u6a19\u4f01\u696d\u65d7\u4e0b\u7684\u6240\u6709\u8cc7\u7522\u7db2\u6bb5\u6216\u53ef\u80fd\u4f7f\u7528\u7684\u7db2\u6bb5\uff0c\u4e26\u6293\u53d6\u6240\u6709\u7db2\u9801\u7684 Response\u3002<\/li>\n\n\n\n<li>\u6bd4\u5c0d\u9ede\uff1a \u6bd4\u5c0d HTTP \u6a19\u982d\u4e2d\u7684 <code>X-Powered-By<\/code>\u3001<code>Server<\/code> \u7248\u672c\u7684\u5fae\u5c0f\u5dee\u7570\uff0c\u6216\u662f HTML \u7684 Title\u3001\u7279\u6b8a CSS \u8def\u5f91\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u7bc4\u4f8b\uff1a<\/h4>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\u5728\u700f\u89bd\u5668\u6253\u958b www.victim-finance.com\uff0c\u6309\u4e0b F12 \u67e5\u770b\u539f\u59cb\u78bc\u3002<\/li>\n\n\n\n<li>\u5c0b\u627e\u4e00\u6bb5\u6700\u7368\u7279\u3001\u4e0d\u53ef\u80fd\u8ddf\u5225\u4eba\u5bb6\u91cd\u8907\u7684\u7a0b\u5f0f\u78bc\u3002\u4f8b\u5982\uff1a <code>&lt;script>var victim_app_version = \"v3.2.1-build-8849\";&lt;\/script><\/code><\/li>\n\n\n\n<li>\u5c07\u9019\u6bb5\u7279\u5fb5\u4e1f\u5230 Censys \u6216 ZoomEye\u7b49\u7a7a\u9593\u641c\u5c0b\u5f15\u64ca\u3002\n<ul class=\"wp-block-list\">\n<li>Censys \u8a9e\u6cd5\u7bc4\u4f8b\uff1a <code>services.http.response.body: \"v3.2.1-build-8849\"<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Censys \u6703\u641c\u5c0b\u5168\u7403\u7db2\u9801\u7684 Body \u5167\u5bb9\uff0c\u6700\u5f8c\u53cd\u5411\u5217\u51fa\u5305\u542b\u9019\u6bb5\u7279\u5b9a\u7a0b\u5f0f\u78bc\u7684\u4f3a\u670d\u5668\u3002\u5373\u4f7f\u6e90\u7ad9\u6539\u540d\u53eb\u505a secret-server.com\uff0c\u53ea\u8981\u7db2\u9801\u5167\u5bb9\u6c92\u8b8a\uff0c\u5c31\u6703\u5728\u641c\u5c0b\u7d50\u679c\u4e2d\u73fe\u5f62\u3002<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u914d\u7f6e\u932f\u8aa4 <\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u89f8\u767c CDN \u7bc0\u9ede\u932f\u8aa4\uff08Edge Error Triggering\uff09<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u539f\u7406\uff1a \u7576\u6ef2\u900f\u6e2c\u8a66\u4eba\u54e1\u6545\u610f\u5c0d CDN \u908a\u7de3\u7bc0\u9ede\uff08Edge Servers\uff09\u767c\u9001\u7578\u5f62\u8acb\u6c42\u3001\u5927\u6a19\u982d\uff08Large Headers\uff09\u6216\u6975\u6162\u901f\u9023\u7dda\uff08Slowloris \u8b8a\u9ad4\uff09\u6642\uff0c\u53ef\u80fd\u6703\u5f15\u767c CDN \u908a\u7de3\u7bc0\u9ede\u8207\u5f8c\u7aef\u6e90\u7ad9\u4e4b\u9593\u7684\u9023\u7dda\u903e\u6642\uff08Gateway Timeout\uff09\u6216\u63e1\u624b\u5931\u6557\uff08SSL Handshake Failed\uff09\u3002<\/li>\n\n\n\n<li>\u505a\u6cd5\uff1a \u67d0\u4e9b CDN \u6a5f\u5236\u5728\u62cb\u51fa 502 \/ 504 \u932f\u8aa4\u7db2\u9801\u6642\uff0c\u5176\u5167\u5efa\u7684 Debug Mode \u6216\u932f\u8aa4\u8a0a\u606f\u539f\u59cb\u78bc\u4e2d\uff0c\u6703\u4e0d\u7d93\u610f\u5730\u66b4\u9732\u5176\u5617\u8a66\u9023\u7dda\u7684 Origin Hostname\u3002\u4ed4\u7d30\u89c0\u5bdf Response \u4e2d\u7684 X-Cache\u3001X-Amz-Cf-Id \u6216\u662f CDN \u5c08\u5c6c\u932f\u8aa4\u9801\u9762\uff0c\u6709\u6642\u80fd\u76f4\u63a5\u770b\u5230\u6e90\u7ad9\u7db2\u57df\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u7bc4\u4f8b\uff1a<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528 <code>curl<\/code> \u6545\u610f\u767c\u9001\u8d85\u9577\u7684\u3001\u7578\u5f62\u7684 HTTP Header \u7d66\u76ee\u6a19\u7db2\u7ad9\uff08\u6216\u662f\u5229\u7528 Slowloris \u5de5\u5177\u9032\u884c\u6162\u901f\u9023\u7dda\u963b\u65b7\u6e2c\u8a66\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>curl -H \"X-Custom-Header: $(python3 -c 'print(\"A\"*20000)')\" https:\/\/www.victim-finance.com<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7531\u65bc X-Custom-Header \u5927\u5c0f\u9054\u5230 20KB\uff0c\u8d85\u904e\u4e86\u524d\u7aef Nginx Reverse Proxy \u7684 large_client_header_buffers \u9650\u5236\uff0c\u4ee3\u7406\u4f3a\u670d\u5668\u76f4\u63a5\u62cb\u51fa <code>502 Bad Gateway<\/code>\uff0c\u5167\u5bb9\u5982\u4e0b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>HTTP\/1.1 502 Bad Gateway\nServer: nginx\/1.18.0\nX-Upstream-Addr: 10.0.12.45:8080\nContent-Type: text\/html\n\n&lt;html>\n&lt;head>&lt;title>502 Bad Gateway&lt;\/title>&lt;\/head>\n&lt;body>\n&lt;center>&lt;h1>502 Bad Gateway&lt;\/h1>&lt;\/center>\n&lt;!-- Debug Info: Failed to connect to upstream server origin-lb-01.internal.victim-finance.com:8080 -->\n&lt;\/body>\n&lt;\/html><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6b64\u60c5\u5883\u4e2d\uff0c\u5167\u90e8\u7dad\u904b\u5718\u968a\u56e0\u672a\u95dc\u9589 Nginx \u7684\u9664\u932f\u56de\u61c9\uff0c\u76f4\u63a5\u5728 HTML \u8a3b\u89e3\u8207 Header \u4e2d\u6d29\u6f0f\u4e86\u5167\u90e8\u6e90\u7ad9\u8ca0\u8f09\u5e73\u8861\u5668\u7684 FQDN (origin-lb-01.internal.victim-finance.com)\uff0c\u63a5\u8457\u5c31\u53ef\u4ee5\u5728\u6839\u64da\u6b64\u8cc7\u8a0a\u53bb\u5224\u65b7Origin IP<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">IPv6 \u907a\u6f0f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6709\u4e9b\u7db2\u7ad9\u53ea\u5e6b IPv4 \u8a2d\u5b9a\u4e86 CDN\uff0c\u537b\u5fd8\u8a18\u8a2d\u5b9a IPv6\u3002\u67e5\u8a62 AAAA \u7d00\u9304\u53ef\u80fd\u76f4\u63a5\u62ff\u5230\u771f\u5be6\u7684 IPv6 \u4f4d\u5740\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u70ba\u8a31\u591a\u7dad\u904b\u4eba\u54e1\u5728\u914d\u7f6e CDN\uff08\u5982 Cloudflare, Akamai\uff09\u6642\uff0c\u53ea\u5c07 A \u7d00\u9304\uff08IPv4\uff09\u6307 an \u5230 CDN \u4ee3\u7406\uff0c\u537b\u5ffd\u8996\u4e86 AAAA \u7d00\u9304\uff08IPv6\uff09\uff0c\u6216\u4f3a\u670d\u5668\u5728\u81ea\u52d5\u53d6\u5f97\u516c\u7db2 IPv6 \u6642\uff0c\u76f4\u63a5\u5c07 AAAA \u7d00\u9304\u6307\u5411\u4e86\u539f\u751f\u7684 IPv6 \u4f4d\u5740\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u653b\u64ca\u8005\u8996\u89d2\uff1a \u900f\u904e <code>dig domain.com AAAA<\/code> \u6216 <code>nslookup -type=AAAA domain.com<\/code>\uff0c\u5982\u679c\u89e3\u6790\u51fa\u975e CDN \u7684\u539f\u751f IPv6\uff0c\u5c31\u80fd\u7e5e\u904e IPv4 \u9632\u8b77\u76f4\u63a5\u653b\u64ca\u6e90\u7ad9\uff08\u4f8b\u5982\u76f4\u63a5\u5229\u7528 IPv6 \u767c\u8d77 HTTP \u8acb\u6c42\uff0c\u6216\u5229\u7528\u6e90\u7ad9\u9632\u706b\u7246\u5c0d IPv6 \u898f\u5247\u914d\u7f6e\u9b06\u6563\u7684\u6f0f\u6d1e\uff09\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7bc4\u4f8b\uff1a<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u67e5 IPv4 (A \u7d00\u9304)\uff0c\u62ff\u5230\u7684\u662f Cloudflare \u7684 IP\uff0c\u7e5e\u4e0d\u904e\u53bb<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ dig example.com A +short\n104.16.123.99  <\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u67e5 IPv6 (AAAA \u7d00\u9304)\uff0c\u76f4\u63a5\u62ff\u5230\u4e86\u6e90\u7ad9\u771f\u5be6\u7684 IPv6 Origin IP<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ dig example.com AAAA +short\n2001:db8::50     <\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4ee3\u78bc\u8207\u7d44\u614b\u6d29\u6f0f\uff08Code \/ Config Leaks\uff09<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>GitHub \/ GitLab \u641c\u5c0b\uff1a \u7dad\u904b\u4eba\u54e1\u5728\u5beb\u81ea\u52d5\u5316\u90e8\u7f72\u6307\u4ee4\u6a94\uff08\u5982 GitHub Actions\u3001Terraform\u3001Ansible\uff09\u6642\uff0c\u5fc5\u9808\u628a CDN \u8981\u5c0e\u5411\u7684\u300c\u771f\u5be6\u6e90\u7ad9\u7db2\u5740\u300d\u5beb\u9032\u8a2d\u5b9a\u6a94\u88e1\u3002\u5982\u679c\u9019\u4e9b Repo \u88ab\u8aa4\u8a2d\u70ba Public\uff0c\u6216\u8005\u5167\u90e8\u54e1\u5de5\u7684\u500b\u4eba GitHub \u6c92\u85cf\u597d\uff0c\u641c\u5c0b ProxyPass\u3001origin_domain \u6216 backend_url \u5c31\u80fd\u76f4\u63a5\u6316\u51fa\u8a72\u57df\u540d\u3002<\/li>\n\n\n\n<li>\u524d\u7aef JS \u7a0b\u5f0f\u78bc\uff1a \u6709\u6642\u958b\u767c\u4eba\u54e1\u6703\u628a\u6e2c\u8a66\u74b0\u5883\uff08Staging \/ UAT\uff09\u7684\u96b1\u853d\u6e90\u7ad9\u57df\u540d\uff0c\u4ee5\u8a3b\u89e3\u6216\u672a\u62d4\u9664\u7684\u9664\u932f\u8b8a\u6578\u5f62\u5f0f\uff0c\u6b98\u7559\u5728\u6b63\u5f0f\u74b0\u5883\u7684 JavaScript \u6a94\u6848\u4e2d\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u7bc4\u4f8b\uff1a<\/h4>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\u5230 GitHub \u641c\u5c0b\u6846\uff0c\u4e0d\u8981\u641c\u5c0b\u516c\u53f8\u5b98\u7db2\uff0c\u800c\u662f\u641c\u5c0b\u516c\u53f8\u540d\u7a31\u6216\u5de5\u7a0b\u5e2b\u7684\u540d\u5b57\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528\u9032\u968e\u641c\u5c0b\u8a9e\u6cd5\u5c0b\u627e\u5e38\u898b\u7684\u4ee3\u7406\u6216\u914d\u7f6e\u95dc\u9375\u5b57\uff1a\n<ul class=\"wp-block-list\">\n<li>&#8220;victim-finance&#8221; filename:nginx.conf<\/li>\n\n\n\n<li>&#8220;victim-finance&#8221; &#8220;proxy_pass&#8221;<\/li>\n\n\n\n<li>org:victim-finance-github-org &#8220;backend_url&#8221;<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4f60\u5728\u67d0\u500b\u96e2\u8077\u54e1\u5de5\u7684\u500b\u4eba Public GitHub \u5132\u5b58\u5eab\u4e2d\uff0c\u627e\u5230\u4e86\u4e00\u500b\u591a\u5e74\u524d\u5beb\u7684 docker-compose.yml \u6e2c\u8a66\u74b0\u5883\u5099\u4efd\u3002\u88e1\u9762\u6709\u4e00\u884c Nginx \u7684\u53cd\u5411\u4ee3\u7406\u8a2d\u5b9a\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>environment:\n  - UPSTREAM_SERVER=prod-origin-secure.vtm-finance-back.io<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u96d6\u7136\u9019\u500b\u7db2\u57df\u8ddf\u516c\u958b\u7684 .com \u5b8c\u5168\u4e0d\u540c\uff0c\u4f46\u9019\u6b63\u662f\u4ed6\u5011\u5728\u96f2\u7aef\u5167\u90e8\u67b6\u8a2d\u3001\u7528\u4f86\u5c0d\u63a5 CDN \u7684\u771f\u6b63\u6e90\u7ad9\u7db2\u57dfprod-origin-secure.vtm-finance-back.io\uff0c\u63a5\u8457\u5c31\u53ef\u4ee5\u5728\u6839\u64da\u6b64\u8cc7\u8a0a\u53bb\u5224\u65b7Origin IP<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7279\u5b9a\u6a94\u6848\u6d29\u6f0f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c0b\u627e phpinfo.php\u3001status\u9801\u9762\u6216\u65e5\u8a8c\u6d29\u6f0f\uff0c\u88e1\u9762\u5e38\u5e38\u76f4\u63a5\u5beb\u660e\u4e86\u4f3a\u670d\u5668\u7684\u74b0\u5883\u8b8a\u6578\u8207 Local\/Public IP\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>phpinfo.php \/ \u8a3a\u65b7\u9801\u9762\uff1a<\/strong> PHP \u7684 phpinfo() \u6703\u5370\u51fa\u5b8c\u6574\u7684\u74b0\u5883\u8b8a\u6578\uff0c\u5305\u542b SERVER_ADDR\u3001LOCAL_ADDR \u6216\u5305\u542b\u5728 HTTP Header \u4e2d\u7684\u771f\u5be6 IP\u3002<\/li>\n\n\n\n<li><strong>Status \u9801\u9762\uff08\u5982 Apache <code>server-status<\/code> \u6216 Nginx <code>stub_status<\/code>\uff09\uff1a<\/strong> \u82e5\u672a\u8a2d\u9650\u5b58\u53d6\uff0c\u53ef\u80fd\u5305\u542b\u4f3a\u670d\u5668\u672c\u8eab\u7684\u771f\u5be6\u4ecb\u9762 IP \u6216\u4f3a\u670d\u5668\u767c\u51fa\u7684\u8acb\u6c42\u8cc7\u8a0a\u3002<\/li>\n\n\n\n<li><strong>\u7cfb\u7d71\u65e5\u8a8c \/ Debug Log \/ <code>.env<\/code>\uff1a<\/strong> \u958b\u767c\u6216\u7dad\u904b\u7559\u4e0b\u7684\u6e2c\u8a66\u6a94\u3001\u5099\u4efd\u6a94\u6216\u932f\u8aa4\u65e5\u8a8c\u4e2d\uff0c\u6975\u6613\u5305\u542b\u5167\u90e8\/\u5916\u90e8 IP \u914d\u7f6e\u8cc7\u8a0a\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u653b\u64ca\u8005\u8996\u89d2\uff1a<\/strong> \u900f\u904e\u76ee\u9304\u7206\u7834\u5de5\u5177\uff08\u5982 <code>gobuster<\/code>\u3001<code>ffuf<\/code>\uff09\u6216\u641c\u5c0b\u5f15\u64ce Dork \u5c0b\u627e\u9019\u4e9b\u6b98\u7559\u6a94\u6848\uff0c\u4e00\u65e6\u53d6\u5f97\u6e90\u7ad9 IP\uff0c\u5373\u53ef\u7e5e\u904e CDN WAF \u9632\u8b77\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b50\u7db2\u57df\u641c\u96c6 <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u5e38\u7dad\u904b\u4eba\u54e1\u53ea\u6703\u628a\u4e3b\u7ad9\uff08\u5982 www.example.com\uff09\u6216\u6d41\u91cf\u5927\u7684\u5730\u65b9\u639b\u4e0a CDN\uff0c\u800c\u4e00\u4e9b\u4e0d\u91cd\u8981\u7684\u5b50\u7db2\u57df\u53ef\u80fd\u76f4\u63a5\u89e3\u6790\u5230\u771f\u5be6\u4f3a\u670d\u5668\uff0c\u751a\u81f3\u9019\u4e9b\u5b50\u7db2\u57df\u5c31\u8ddf\u4e3b\u7ad9\u5728\u540c\u4e00\u500b C \u6bb5\uff08\u540c\u4e00\u500b\u7db2\u6bb5\uff09IP\u3002\u4e0d\u904e\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5728 AWS\/GCP \u7b49\u516c\u7528\u96f2\u4e0a\uff0c\u901a\u5e38\u62ff\u5230\u7684\u662f\u52d5\u614b\u6216\u5206\u6563\u7684 Elastic IP\uff0c\u4e0d\u4e00\u5b9a\u6703\u5728\u540c\u4e00\u500b \/24 \u7db2\u6bb5\u5167\u9023\u7e8c\u6392\u5217\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5e38\u898b\u76ee\u6a19\uff1a dev.example.com\u3001test.example.com\u3001mail.example.com\u3001vpn.example.com\u3001admin.example.com\u3002<\/li>\n\n\n\n<li>\u4f5c\u6cd5\uff1a \u627e\u5230\u9019\u4e9b\u5b50\u7db2\u57df\u7684 IP \u5f8c\uff0c\u53bb\u5c0d\u6bd4\u5b83\u5011\u7684 IP \u7db2\u6bb5\uff0c\u6216\u8005\u76f4\u63a5\u5617\u8a66\u7528\u9019\u4e9b IP \u900f\u904e\u4fee\u6539 Host \u8868\u982d\u53bb\u5b58\u53d6\u4e3b\u7ad9\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7bc4\u4f8b\uff1a<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u641c\u96c6\u6240\u6709\u7684\u5468\u908a\u7cfb\u7d71\uff08\u5b50\u7db2\u57df\uff09 <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528\u81ea\u52d5\u5316\u5de5\u5177\uff08\u4f8b\u5982 <code>amass<\/code>\uff09\u6216\u7dda\u4e0a\u7db2\u7ad9\uff08crt.sh\uff09\u641c\u96c6 shop.com \u7684\u6240\u6709\u5b50\u7db2\u57df\uff0c\u63a1\u96c6\u5230\u4ee5\u4e0b\u6e05\u55ae\uff1a<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>www.shop.com   \u89e3\u6790\u5230 104.21.5.10 (Cloudflare CDN)<\/li>\n\n\n\n<li>api.shop.com  \u89e3\u6790\u5230 104.21.5.11 (Cloudflare CDN)<\/li>\n\n\n\n<li>mail.shop.com  \u89e3\u6790\u5230 140.112.10.5 (\u4e2d\u83ef\u96fb\u4fe1\/AWS \u516c\u7db2 IP\uff0c\u6c92\u639b CDN)<\/li>\n\n\n\n<li>dev.shop.com  \u89e3\u6790\u5230 140.112.10.12 (\u540c\u6a23\u6c92\u639b CDN)<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u63a8\u7406\u4e26\u9032\u884c C \u6bb5\uff08\u540c\u7db2\u6bb5\uff09\u6383\u63cf <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7dad\u904b\u4eba\u54e1\u5728\u79df\u7528\u96f2\u7aef\u4e3b\u6a5f\u6216\u6a5f\u623f\u6642\uff0c\u901a\u5e38\u662f\u4e00\u6b21\u79df\u7528\u4e00\u6574\u584a\u9023\u7e8c\u7684 IP\uff08\u4f8b\u5982 140.112.10.1 \u5230 140.112.10.254\uff09\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u56e0\u70ba mail.shop.com \u7684 IP \u662f 140.112.10.5\uff0c  dev.shop.com \u7684 IP \u662f 140.112.10.12\u3002<\/li>\n\n\n\n<li>\u63a8\u8ad6\u771f\u6b63\u7684 Web \u6e90\u7ad9\uff0c\u6975\u5ea6\u53ef\u80fd\u4e5f\u85cf\u5728 140.112.10.* \u9019\u500b\u7db2\u6bb5\u88e1\u7684\u67d0\u4e00\u96bb IP <\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u7db2\u6bb5\u78b0\u649e\u9a57\u8b49 <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6e96\u5099\u4e00\u500b\u7c21\u55ae\u7684\u8173\u672c\uff0c\u5c0d 140.112.10.*\u9019 254 \u500b IP \u9001\u51fa HTTP \u8acb\u6c42\uff0c\u4e26\u5e36\u4e0a\u4e3b\u7ad9\u7684 Host \u8868\u982d\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>for ip in 140.112.10.{1..254}; do\n    curl -H \"Host: www.shop.com\" http:\/\/$ip\ndone<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7d50\u679c\u767c\u73fe\u7576\u6383\u63cf\u5230 140.112.10.8 \u6642\uff0c\u4f3a\u670d\u5668\u5410\u51fa\u4e86\u8ddf www.shop.com\u4e00\u6a21\u4e00\u6a23\u7684\u7db2\u9801\uff0c\u8868\u793a\u5df1\u7d93\u767c\u73feOrigin IP<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5229\u7528\u4f3a\u670d\u5668\u767c\u8d77\u7684\u5916\u9023\u8acb\u6c42 <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u76ee\u6a19\u7db2\u7ad9\u6709\u5141\u8a31\u4f3a\u670d\u5668\u4e3b\u52d5\u767c\u8d77\u5916\u9023\u7684\u529f\u80fd\uff0c\u4f60\u53ef\u4ee5\u8a98\u9a19\u4f3a\u670d\u5668\u9023\u56de\u4f60\u63a7\u5236\u7684\u4f3a\u670d\u5668\uff0c\u85c9\u6b64\u76f4\u63a5\u6293\u5230\u5b83\u7684\u771f\u5be6\u5916\u9023 IP\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">SSRF\uff08Server-Side Request Forgery\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7576\u4f3a\u670d\u5668\u5b58\u5728 SSRF \u6f0f\u6d1e\u6642\uff0c\u653b\u64ca\u8005\u53ef\u63a7\u5236\u4f3a\u670d\u5668\u767c\u8d77 HTTP\/HTTPS \u8acb\u6c42\u3002\u82e5\u5c07\u8acb\u6c42\u76ee\u6a19\u8a2d\u70ba\u653b\u64ca\u8005\u63a7\u5236\u7684\u4f3a\u670d\u5668\uff08\u4f8b\u5982 http:\/\/your-attacker-ip\uff09\uff0c\u76ee\u6a19\u4f3a\u670d\u5668\u7684\u7db2\u8def\u4ecb\u9762\u6703\u76f4\u63a5\u5efa\u7acb TCP \u9023\u7dda\uff0c\u653b\u64ca\u8005\u7684 Server Log \u5373\u53ef\u6355\u7372\u8a72\u9023\u7dda\u7684 \u6e90\u982d IP\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\u4e8b\u9805\uff1a\u82e5\u76ee\u6a19\u7db2\u7ad9\u67b6\u69cb\u5305\u542b\u8ca0\u8f09\u5e73\u8861\u5668\uff08Load Balancer\uff09\u3001\u5167\u90e8\u4ee3\u7406\u4f3a\u670d\u5668\uff08Egress Proxy\uff09\u6216\u7368\u7acb\u7684\u5916\u9023 Gateway\uff0c\u6355\u7372\u5230\u7684 IP \u53ef\u80fd\u662f\u51fa\u5883\u7db2\u95dc\uff08Egress IP\uff09\uff0c\u800c\u4e0d\u4e00\u5b9a\u662f Hosting Web \u61c9\u7528\u7684\u4e3b\u6a5f IP\uff0c\u4f46\u9019\u4ecd\u5c6c\u65bc\u76ee\u6a19\u7db2\u8def\u8a2d\u65bd\u7684\u4e00\u90e8\u4efd\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u982d\u50cf\/\u5716\u7247\u4e0a\u50b3\uff08\u900f\u904e URL\uff09 <\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a31\u591a Web \u61c9\u7528\u7a0b\u5f0f\u63d0\u4f9b\u300c\u5f9e URL \u532f\u5165\u5716\u7247\u300d\u7684\u529f\u80fd\uff08\u4f8b\u5982\u8f38\u5165\u76f8\u7247\u7db2\u5740\u81ea\u52d5\u4e0b\u8f09\u70ba\u982d\u50cf\uff09\u3002\u7576\u4f3a\u670d\u5668\u5f8c\u7aef\u57f7\u884c\u4e0b\u8f09\u908f\u8f2f\u6642\uff0c\u6703\u4e3b\u52d5\u5411\u8a72 URL \u767c\u8d77\u8acb\u6c42\uff0c\u9032\u800c\u5411\u76e3\u807d\u4f3a\u670d\u5668\u6d29\u6f0f\u771f\u5be6 IP\u3002\u6240\u4ee5\u53ef\u4ee5\u8f38\u5165\u4f60\u81ea\u5efa\u4f3a\u670d\u5668\u7684\u5716\u7247\u7db2\u5740\uff0c\u8b93\u76ee\u6a19\u4f3a\u670d\u5668\u4f86\u4e0b\u8f09\uff0c\u5c31\u80fd\u89c0\u5bdf\u81ea\u5df1\u7684\u4f3a\u670d\u5668 \u67e5\u5230\u662f\u77e5\u9053\u662f\u54ea\u500bIP\u4f86\u8a2a\u554f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Webhook \u8a02\u95b1\u529f\u80fd <\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Webhook \u6a5f\u5236\uff08\u5982 GitHub\u3001Payment Gateway\u3001SaaS \u670d\u52d9\u7684\u4e8b\u4ef6\u901a\u77e5\uff09\u6703\u7531\u76ee\u6a19\u4f3a\u670d\u5668\u4e3b\u52d5\u5411\u4f7f\u7528\u8005\u6307\u5b9a\u7684 End Point \u767c\u9001 HTTP POST \u8acb\u6c42\u3002\u6b64\u52d5\u4f5c\u4e0d\u7d93\u904e CDN \u524d\u7aef\u9632\u8b77\uff0c\u76f4\u63a5\u7531\u5f8c\u7aef\u670d\u52d9\u6216\u80cc\u666f Task Runner\uff08\u5982 Celery\u3001Sidekiq\uff09\u767c\u51fa\uff0c\u6975\u6613\u6d29\u6f0f\u5167\u7db2\u6216\u771f\u5be6 Server IP\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5fd8\u8a18\u5bc6\u78bc\/\u90f5\u4ef6\u767c\u9001  <\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7576\u7db2\u7ad9\u8abf\u7528\u672c\u5730 SMTP \u670d\u52d9\uff08\u5982 Postfix, Sendmail\uff09\u76f4\u63a5\u767c\u9001\u90f5\u4ef6\u6642\uff0c\u4fe1\u4ef6\u6a19\u982d\uff08Email Headers\uff09\u4e2d\u7684 <code>Received:<\/code> \u93c8\u689d\u6703\u8a18\u9304\u4fe1\u4ef6\u50b3\u9001\u904e\u7a0b\u4e2d\u7684\u6bcf\u4e00\u500b Hop\uff0c\u5305\u542b\u767c\u4fe1\u4e3b\u6a5f\u7684\u539f\u59cb IP \u6216\u4e3b\u6a5f\u540d\u7a31\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\u4e8b\u9805\uff1a\u5982\u679c\u76ee\u6a19\u7db2\u7ad9\u6539\u7528\u7b2c\u4e09\u65b9\u90f5\u4ef6\u670d\u52d9 API\uff08\u5982 SendGrid, Mailgun, AWS SES, Google Workspace\uff09\uff0c\u767c\u4fe1\u52d5\u4f5c\u6703\u7531\u7b2c\u4e09\u65b9\u4ee3\u52de\uff0c\u6b64\u6642\u63a1\u96c6\u5230\u7684\u53ea\u6703\u662f Mail Service Provider \u7684 IP\uff0c\u800c\u975e\u7db2\u7ad9\u672c\u8eab\u7684\u771f\u5be6 IP\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u9a57\u8b49\u6e90\u7ad9\u7684\u5e38\u7528\u65b9\u5f0f  <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e38\u898b\u7684\u65b9\u5f0f\uff0c\u4e3b\u8981\u67093\u7a2e<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4fee\u6539 \/etc\/hosts<\/strong> <\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u9019\u7a2e\u65b9\u5f0f\u662f\u4fee\u6539\u4f5c\u696d\u7cfb\u7d71\u5c64\u7d1a\u7684 DNS \u89e3\u6790\uff0c\u5beb\u5165\u5f8c\u5168\u7cfb\u7d71\u6240\u6709\u7a0b\u5f0f\u90fd\u6703\u751f\u6548\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>curl &#8211;resolve<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a9e\u6cd5\u683c\u5f0f\u70ba <code>--resolve &lt;DOMAIN>:&lt;PORT>:&lt;IP><\/code>\u3002\u9019\u6703\u8b93 curl \u5728\u5167\u90e8\u5f37\u5236\u628a\u8a72\u57df\u540d\u7684\u7279\u5b9a Port \u89e3\u6790\u5230\u4f60\u6307\u5b9a\u7684 IP\uff0c\u540c\u6642\u4fdd\u6301\u6a19\u6e96\u7684 TLS SNI \u63e1\u624b\u3002\u6b64\u529f\u80fd\u662f 2010 \u5e74\uff08curl 7.21.3\uff09\u624d\u88ab\u5f15\u5165\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<code>curl -i -k --resolve example.com:443:1.2.3.4 https:\/\/example.com\/<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>curl -H<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u7d14 HTTP Header \u507d\u9020\uff0c\u4f7f\u7528\u65b9\u4fbf\uff0c\u9019\u7a2e\u65b9\u5f0f\u662f\u76f4\u63a5\u6307\u5b9a\u9023\u7dda\u76ee\u6a19\u70ba IP \u6216domain\uff0c\u4e26\u5728 HTTP \u8acb\u6c42\u6a19\u982d\uff08Header\uff09\u4e2d\u5e36\u5165 <code>Host: example.com<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<code>curl -i -k -H \"Host: example.com\" https:\/\/1.2.3.4<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>\u9a57\u8b49\u65b9\u5f0f<\/strong><\/td><td><strong>\u80fd\u5426\u901a\u904e SNI \u6aa2\u67e5\uff1f<\/strong><\/td><td><strong>\u80fd\u5426\u901a\u904e HTTP Host \u6aa2\u67e5\uff1f<\/strong><\/td><td><strong>\u700f\u89bd\u5668\/\u8de8\u8cc7\u6e90\u8f09\u5165<\/strong><\/td><td><strong>\u7d50\u8ad6\u8207\u5be6\u52d9\u7d50\u679c<\/strong><\/td><\/tr><\/thead><tbody><tr><td><strong><code>\/etc\/hosts<\/code><\/strong><\/td><td>\u6210\u529f (target.com)<\/td><td>\u6210\u529f (target.com)<\/td><td>\u5b8c\u5168\u6b63\u5e38<\/td><td><strong>\u6700\u5b8c\u6574<\/strong>\uff1a\u700f\u89bd\u5668\u80fd\u8f09\u5165\u6240\u6709 CSS\/JS\uff0c\u5c31\u50cf\u771f\u5be6\u8a2a\u554f\u4e00\u6a23\u3002<\/td><\/tr><tr><td><strong><code>curl --resolve<\/code><\/strong><\/td><td>\u6210\u529f (target.com)<\/td><td>\u6210\u529f (target.com)<\/td><td>\u50c5\u9650\u55ae\u4e00 API \/ HTML<\/td><td><strong>\u6700\u7cbe\u6e96<\/strong>\uff1aCLI \u6700\u4f73\u89e3\uff0c\u7d50\u679c\u8207\u4fee\u6539 <code>\/etc\/hosts<\/code> \u5728\u55ae\u4e00\u8acb\u6c42\u4e0a\u5b8c\u5168\u4e00\u81f4\u3002<\/td><\/tr><tr><td><strong><code>curl -H \"Host: ...\"<\/code><\/strong><\/td><td>\u5931\u6557 (SNI \u6703\u8b8a\u6210 IP)<\/td><td>\u6210\u529f (target.com)<\/td><td>\u50c5\u9650\u55ae\u4e00 API \/ HTML<\/td><td><strong>\u6700\u5bb9\u6613\u5831\u932f<\/strong>\uff1a\u9047\u5230\u56b4\u683c\u7684 Nginx\/Cloudflare\/Envoy\uff0c\u6703\u5728 TLS \u63e1\u624b\u968e\u6bb5\u76f4\u63a5\u88ab\u963b\u65b7 (403\/400\/Connection reset)\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u89e3\u6c7a\u6e90\u7ad9\u554f\u984c <\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u8a2d\u5b9a\u9632\u706b\u7246\u767d\u540d\u55ae <\/strong> <\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6e90\u7ad9\u4f3a\u670d\u5668\u61c9\u8a2d\u5b9a ACL\uff08\u5b58\u53d6\u63a7\u5236\u6e05\u55ae\uff09\uff0c\u53ea\u5141\u8a31\u4f86\u81ea CDN \u7bc0\u9ede\u7684 IP \u5b58\u53d6\uff0c\u62d2\u7d55\u6240\u6709\u4f86\u81ea\u516c\u7db2\u7684\u5176\u4ed6\u8acb\u6c42\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5373\u4f7f\u653b\u64ca\u8005\u900f\u904e\u6b77\u53f2\u7d00\u9304\u6216\u5404\u7a2e\u624b\u6cd5\u63a8\u7b97\u51fa\u4f60\u7684\u6e90\u7ad9 IP\uff0c\u82e5\u6e90\u7ad9\u4f3a\u670d\u5668\uff08\u6216\u524d\u7aef\u7684 Security Group \/ Cloud Firewall\uff09\u8a2d\u5b9a\u4e86 ACL\uff0c\u53ea\u653e\u884c CDN \u5ee0\u5546\u5b98\u65b9\u516c\u4f48\u7684 IP \u5340\u6bb5\uff08\u4f8b\u5982 Cloudflare IP Ranges\u3001Akamai Edge Nodes\uff09\uff0c\u4f86\u81ea\u653b\u64ca\u8005\u7684\u76f4\u9023\u6d41\u91cf\u6703\u5728\u7db2\u8def\u5c64\uff08L3\/L4\uff09\u76f4\u63a5\u88ab DROP \u6216 REJECT\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u904e\uff0c\u50c5\u9396 IP \u767d\u540d\u55ae\u6709\u6642\u4ecd\u53ef\u80fd\u88ab\u653b\u64ca\u8005\u900f\u904e\u300c\u5728\u540c\u4e00\u5bb6 CDN \u4e0a\u79df\u7528\u670d\u52d9\u4e26\u5c07\u8acb\u6c42\u8f49\u5411\u4f60\u7684 IP\u300d\u4f86\u7e5e\u904e\u3002\u56e0\u6b64\uff0c\u5b8c\u6574\u7684\u505a\u6cd5\u901a\u5e38\u6703\u642d\u914d mTLS\uff08\u96d9\u5411 TLS \u9a57\u8b49\uff09 \u6216 Custom HTTP Header \u9a57\u8b49\uff08\u4f8b\u5982 Cloudflare Authenticated Origin Pulls\uff09\uff0c\u78ba\u4fdd\u8acb\u6c42\u4e0d\u50c5\u4f86\u81ea\u8a72 CDN\uff0c\u4e14\u78ba\u5be6\u4f86\u81ea\u300c\u4f60\u7684 CDN \u5e33\u865f\u300d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u66f4\u63db\u6e90\u7ad9 IP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u65e6 IP \u6d29\u6f0f\uff0c\u6700\u5b89\u5168\u7684\u65b9\u6cd5\u5c31\u662f\u76f4\u63a5\u66f4\u63db\u65b0\u7684\u516c\u7db2 IP\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">IP \u4e00\u65e6\u6d29\u6f0f\uff0c\u5c31\u5982\u540c\u96b1\u85cf\u7684\u9580\u724c\u865f\u78bc\u5df2\u7d93\u66dd\u5149\u3002\u5149\u9760\u4fee\u88dc DNS \u6216\u96b1\u85cf Header \u7121\u6cd5\u64a4\u92b7\u5df2\u7d93\u6d41\u51fa\u7684\u6b77\u53f2\u7d00\u9304\uff08\u5982 Censys, Shodan, SecurityTrails \u7b49\u5e73\u53f0\u6703\u6c38\u4e45\u7559\u5b58\uff09\u3002\u56e0\u6b64\uff0c\u63db\u6389\u516c\u7db2 IP \u662f\u5fb9\u5e95\u5207\u65b7\u820a\u653b\u64ca\u9762\u7684\u552f\u4e00\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b63\u78ba\u7684\u66f4\u63db\u6b65\u9a5f\uff08\u907f\u514d\u63db\u4e86\u53c8\u7acb\u523b\u6d29\u6f0f\uff09\uff1a<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\u5148\u4fee\u88dc\u6d29\u6f0f\u6e90\u982d<\/strong>\uff1a\u6aa2\u67e5\u4e26\u4fee\u4fee\u88dc SSRF \u6f0f\u6d1e\u3001\u4fee\u6b63 Email \u4f3a\u670d\u5668\u8a2d\u5b9a\uff08\u907f\u514d\u767c\u4fe1\u66dd\u9732\u6e90\u7ad9 IP\uff09\u3001\u6e05\u7406\u542b\u6709\u820a IP \u7684 DNS \u7d00\u9304\u8207\u5b50\u7db2\u57df\u3002<\/li>\n\n\n\n<li><strong>\u90e8\u7f72\u9632\u706b\u7246\u767d\u540d\u55ae<\/strong>\uff1a\u5728\u65b0\u7684 IP \u4e0a\u555f\u7528\u524d\u8ff0\u7684 CDN IP \u767d\u540d\u55ae\u3002<\/li>\n\n\n\n<li><strong>\u7d81\u5b9a\u65b0 IP \u81f3 CDN<\/strong>\uff1a\u5c07 CDN \u7684 Origin \u8a2d\u5b9a\u66f4\u65b0\u70ba\u65b0 IP\u3002<\/li>\n\n\n\n<li><strong>\u91cb\u653e\/\u5ee2\u68c4\u820a IP<\/strong>\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u6ef2\u900f\u6e2c\u8a66\u4e2d\uff0c\u7e5e\u904e CDN\u5c0b\u627e\u5f8c\u7aef\u7684\u771f\u5be6\u6e90\u7ad9\u662f\u975e\u5e38\u7d93\u5178\u4e14\u95dc\u9375\u7684\u4e00\u6b65\u3002\u53ea\u8981\u627e\u5230\u6e90\u7ad9\uff0c\u653b\u64ca\u8005\u6216\u6e2c\u8a66\u4eba\u54e1\u5c31\u80fd\u7e5e\u904e CDN \u7684 WAF\u3001DDoS \u9632\u79a6\uff0c\u76f4\u63a5\u5c0d\u76ee\u6a19\u4f3a\u670d\u5668\u9032\u884c\u6f0f\u6d1e\u5229\u7528\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[368],"tags":[],"class_list":["post-3241","post","type-post","status-publish","format-standard","hentry","category-operations"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":2923,"url":"https:\/\/systw.net\/note\/archives\/2923","url_meta":{"origin":3241,"position":0},"title":"Web\u6ef2\u900f\u6e2c\u8a66\u5be6\u52d9","author":"raymond","date":"2025 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