{"id":34318,"date":"2025-03-10T17:06:20","date_gmt":"2025-03-10T09:06:20","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=34318"},"modified":"2025-03-10T17:06:20","modified_gmt":"2025-03-10T09:06:20","slug":"ebpf%e5%9c%a8%e7%bd%91%e7%bb%9c%e5%ae%89%e5%85%a8%e4%b8%ad%e7%9a%84%e5%ba%94%e7%94%a8%e6%9c%89%e5%93%aa%e4%ba%9b%e5%ae%9e%e9%99%85%e6%a1%88%e4%be%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/34318.html","title":{"rendered":"eBPF\u5728\u7f51\u7edc\u5b89\u5168\u4e2d\u7684\u5e94\u7528\u6709\u54ea\u4e9b\u5b9e\u9645\u6848\u4f8b\uff1f"},"content":{"rendered":"<p style=\"text-align: center;\">\n<p><img decoding=\"async\" src=\"https:\/\/www.yunshan.net\/blog\/wp-content\/uploads\/2025\/03\/k0BMzN.jpg\" alt=\"eBPF\u5728\u7f51\u7edc\u5b89\u5168\u4e2d\u7684\u5e94\u7528\u6709\u54ea\u4e9b\u5b9e\u9645\u6848\u4f8b\uff1f\" ><\/p>\n<\/p>\n<hr>\n<p><strong>\u524d\u8a00<\/strong><br \/>\n\u5728\u6570\u5b57\u5316\u6d6a\u6f6e\u5e2d\u5377\u5168\u7403\u7684\u4eca\u5929\uff0c\u7f51\u7edc\u5b89\u5168\u5df2\u6210\u4e3a\u4f01\u4e1a\u751f\u5b58\u7684&rdquo;\u751f\u547d\u7ebf&rdquo;\u3002\u968f\u7740\u653b\u51fb\u624b\u6bb5\u7684\u590d\u6742\u5316\uff0c\u4f20\u7edf\u7684\u5b89\u5168\u9632\u62a4\u6280\u672f\u9010\u6e10\u66b4\u9732\u51fa\u8d44\u6e90\u6d88\u8017\u9ad8\u3001\u54cd\u5e94\u5ef6\u8fdf\u5927\u3001\u53ef\u89c2\u6d4b\u6027\u4e0d\u8db3\u7b49\u77ed\u677f\u3002\u800c\u4e00\u79cd\u540d\u4e3a<strong><a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">eBPF<\/a>\uff08Extended Berkeley Packet Filter\uff09<\/strong>\u7684\u6280\u672f\uff0c\u51ed\u501f\u5176<strong>\u5185\u6838\u7ea7\u53ef\u7f16\u7a0b\u80fd\u529b<\/strong>\u548c<strong>\u4f4e\u6027\u80fd\u635f\u8017<\/strong>\u7684\u7279\u6027\uff0c\u6b63\u5728\u91cd\u5851\u7f51\u7edc\u5b89\u5168\u7684\u9632\u5fa1\u4f53\u7cfb\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">eBPF<\/a>\u5982\u4f55\u901a\u8fc7<strong>\u5b9e\u65f6\u76d1\u63a7<\/strong>\u3001<strong>\u52a8\u6001\u9632\u5fa1<\/strong>\u548c<strong>\u6df1\u5ea6\u53ef\u89c2\u6d4b\u6027<\/strong>\uff0c\u5728\u7f51\u7edc\u5b89\u5168\u9886\u57df\u5f00\u8f9f\u51fa\u5168\u65b0\u7684\u5b9e\u8df5\u8def\u5f84\u3002<\/p>\n<hr>\n<h3 id=\"\u4e00-ebpf-\u4ece\u6570\u636e\u5305\u8fc7\u6ee4\u5230\u5185\u6838\u53ef\u7f16\u7a0b\u7684\u9769\u547d\"><strong>\u4e00\u3001eBPF\uff1a\u4ece\u6570\u636e\u5305\u8fc7\u6ee4\u5230\u5185\u6838\u53ef\u7f16\u7a0b\u7684\u9769\u547d<\/strong><\/h3>\n<p>eBPF\u6700\u521d\u4f5c\u4e3aLinux\u5185\u6838\u7684\u6570\u636e\u5305\u8fc7\u6ee4\u5de5\u5177\uff0c\u7ecf\u8fc7\u5341\u5e74\u6f14\u8fdb\uff0c\u5df2\u53d1\u5c55\u6210\u4e00\u5957<strong>\u5b89\u5168\u3001\u9ad8\u6548\u7684\u5185\u6838\u865a\u62df\u673a\u7cfb\u7edf<\/strong>\u3002\u5b83\u5141\u8bb8\u5f00\u53d1\u8005\u5728\u65e0\u9700\u4fee\u6539\u5185\u6838\u6e90\u7801\u7684\u60c5\u51b5\u4e0b\uff0c\u52a8\u6001\u6ce8\u5165\u81ea\u5b9a\u4e49\u7a0b\u5e8f\u5230\u5185\u6838\u7a7a\u95f4\uff0c\u76f4\u63a5\u5bf9\u7f51\u7edc\u6d41\u91cf\u3001\u7cfb\u7edf\u8c03\u7528\u7b49\u5173\u952e\u884c\u4e3a\u8fdb\u884c\u63a7\u5236\u3002\u8fd9\u79cd\u80fd\u529b\u6253\u7834\u4e86\u4f20\u7edf\u5b89\u5168\u5de5\u5177\u4f9d\u8d56\u7528\u6237\u6001\u4ee3\u7406\u7684\u5c40\u9650\uff0c\u4f7f\u5f97<strong>\u5b9e\u65f6\u5a01\u80c1\u68c0\u6d4b<\/strong>\u548c<strong>\u96f6\u5ef6\u8fdf\u54cd\u5e94<\/strong>\u6210\u4e3a\u53ef\u80fd\u3002<\/p>\n<p>\u6839\u636eLinux\u57fa\u91d1\u4f1a2023\u5e74\u7684\u62a5\u544a\uff0c<strong>\u8d85\u8fc765%\u7684\u4e91\u539f\u751f\u4f01\u4e1a<\/strong>\u5df2\u5728\u5176\u5b89\u5168\u67b6\u6784\u4e2d\u96c6\u6210eBPF\u6280\u672f\u3002\u5176\u6838\u5fc3\u4f18\u52bf\u5728\u4e8e\uff1a<\/p>\n<ul>\n<li><strong>\u5185\u6838\u6001\u6267\u884c<\/strong>\uff1a\u76f4\u63a5\u5728\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u4e2d\u8fd0\u884c\uff0c\u907f\u514d\u7528\u6237\u6001\u4e0e\u5185\u6838\u6001\u7684\u6570\u636e\u62f7\u8d1d\u5ef6\u8fdf\n<\/li>\n<li><strong>\u7ec6\u7c92\u5ea6\u89c2\u6d4b<\/strong>\uff1a\u652f\u6301\u4ece\u7cfb\u7edf\u8c03\u7528\u5230\u7f51\u7edc\u534f\u8bae\u6808\u7684<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">\u5168\u94fe\u8def\u76d1\u63a7<\/a>\n<\/li>\n<li><strong>\u52a8\u6001\u52a0\u8f7d<\/strong>\uff1a\u5b89\u5168\u7b56\u7565\u53ef\u5373\u65f6\u66f4\u65b0\uff0c\u65e0\u9700\u91cd\u542f\u670d\u52a1\n<\/li>\n<\/ul>\n<hr>\n<h3 id=\"\u4e8c-\u5b9e\u65f6\u5165\u4fb5\u68c0\u6d4b-\u4ece\u88ab\u52a8\u9632\u5fa1\u5230\u4e3b\u52a8\u72e9\u730e\"><strong>\u4e8c\u3001\u5b9e\u65f6\u5165\u4fb5\u68c0\u6d4b\uff1a\u4ece\u88ab\u52a8\u9632\u5fa1\u5230\u4e3b\u52a8\u72e9\u730e<\/strong><\/h3>\n<p>\u4f20\u7edf\u7684\u57fa\u4e8e\u89c4\u5219\u7684\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\uff08IDS\uff09\u5e38\u56e0\u89c4\u5219\u5e93\u66f4\u65b0\u6ede\u540e\u800c\u5931\u6548\u3002eBPF\u901a\u8fc7<strong>\u52a8\u6001\u8ffd\u8e2a\u5185\u6838\u4e8b\u4ef6<\/strong>\uff0c\u80fd\u591f\u5b9e\u65f6\u6355\u83b7\u5f02\u5e38\u884c\u4e3a\u3002\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li><strong>Cilium Security<\/strong>\u5229\u7528eBPF\u76d1\u63a7\u5bb9\u5668\u95f4\u901a\u4fe1\uff0c\u5f53\u68c0\u6d4b\u5230\u672a\u7ecf\u6388\u6743\u7684\u8de8\u8282\u70b9\u8bbf\u95ee\u65f6\uff0c\u7acb\u5373\u89e6\u53d1\u7b56\u7565\u62e6\u622a\n<\/li>\n<li><strong>Falco<\/strong>\u9879\u76ee\u901a\u8fc7eBPF\u8ddf\u8e2a\u7cfb\u7edf\u8c03\u7528\uff0c\u7cbe\u51c6\u8bc6\u522b<code>\u7279\u6743\u63d0\u5347<\/code>\u3001<code>\u654f\u611f\u6587\u4ef6\u7be1\u6539<\/code>\u7b49\u653b\u51fb\u6a21\u5f0f\n<\/li>\n<\/ul>\n<p>\u67d0\u91d1\u878d\u79d1\u6280\u516c\u53f8\u7684\u6848\u4f8b\u663e\u793a\uff0c\u90e8\u7f72\u57fa\u4e8eeBPF\u7684\u68c0\u6d4b\u7cfb\u7edf\u540e\uff0c<strong>\u6f0f\u6d1e\u5229\u7528\u653b\u51fb\u7684\u53d1\u73b0\u65f6\u95f4\u4ece\u5c0f\u65f6\u7ea7\u7f29\u77ed\u81f3\u6beb\u79d2\u7ea7<\/strong>\u3002\u8fd9\u5f97\u76ca\u4e8eeBPF\u7a0b\u5e8f\u80fd\u591f\u76f4\u63a5\u5173\u8054\u7f51\u7edc\u5c42\u4e0e\u5e94\u7528\u5c42\u4e8b\u4ef6\uff0c\u6bd4\u5982\u5c06\u67d0\u4e2a\u5f02\u5e38\u7684HTTP\u8bf7\u6c42\u4e0e\u540e\u7eed\u7684\u654f\u611f\u6587\u4ef6\u8bfb\u53d6\u64cd\u4f5c\u8fdb\u884c\u56e0\u679c\u5206\u6790\u3002<\/p>\n<hr>\n<h3 id=\"\u4e09-\u96f6\u4fe1\u4efb\u67b6\u6784\u7684\u5fae\u89c2\u5b9e\u73b0\"><strong>\u4e09\u3001\u96f6\u4fe1\u4efb\u67b6\u6784\u7684\u5fae\u89c2\u5b9e\u73b0<\/strong><\/h3>\n<p>\u96f6\u4fe1\u4efb\u5b89\u5168\u6a21\u578b\u8981\u6c42\u5bf9\u6bcf\u4e2a\u8bf7\u6c42\u8fdb\u884c\u6301\u7eed\u9a8c\u8bc1\u3002eBPF\u901a\u8fc7\u5728<strong>\u7f51\u7edc\u534f\u8bae\u6808\u7684\u4e0d\u540c\u5c42\u7ea7\u63d2\u5165\u94a9\u5b50<\/strong>\uff08Hook\uff09\uff0c\u5b9e\u73b0\u4e86\u7ec6\u7c92\u5ea6\u7684\u8bbf\u95ee\u63a7\u5236\uff1a<\/p>\n<ol>\n<li><strong>\u7f51\u7edc\u5c42<\/strong>\uff1a\u57fa\u4e8eeBPF\u7684\u9632\u706b\u5899\uff08\u5982BPF-based XDP\uff09\u53ef\u4e22\u5f03DDoS\u653b\u51fb\u6d41\u91cf\uff0c\u5904\u7406\u901f\u5ea6\u8fbe<strong>\u5343\u4e07\u7ea7\u6570\u636e\u5305\/\u79d2<\/strong>\n<\/li>\n<li><strong>\u4f20\u8f93\u5c42<\/strong>\uff1a\u52a8\u6001\u751f\u6210\u767d\u540d\u5355\uff0c\u4ec5\u5141\u8bb8\u6388\u6743\u8fdb\u7a0b\u5efa\u7acbTCP\u8fde\u63a5\n<\/li>\n<li><strong>\u5e94\u7528\u5c42<\/strong>\uff1a\u89e3\u6790TLS\u63e1\u624b\u4fe1\u606f\uff0c\u5b9e\u65bd\u57fa\u4e8e\u8bc1\u4e66\u7684\u8eab\u4efd\u8ba4\u8bc1\n<\/li>\n<\/ol>\n<p>\u8c37\u6b4c\u7684<strong>\u5fae\u670d\u52a1\u5b89\u5168\u6846\u67b6<\/strong>\u5c31\u6df1\u5ea6\u96c6\u6210\u4e86eBPF\uff0c\u901a\u8fc7\u76d1\u63a7\u670d\u52a1\u7f51\u683c\u4e2d\u7684mTLS\u901a\u4fe1\uff0c\u81ea\u52a8\u9694\u79bb\u672a\u901a\u8fc7\u53cc\u5411\u8ba4\u8bc1\u7684Pod\u3002\u8fd9\u79cd<strong>\u534f\u8bae\u611f\u77e5\u578b\u5b89\u5168\u7b56\u7565<\/strong>\uff0c\u663e\u8457\u964d\u4f4e\u4e86\u6a2a\u5411\u6e17\u900f\u98ce\u9669\u3002<\/p>\n<hr>\n<h3 id=\"\u56db-\u52a0\u5bc6\u6d41\u91cf\u5206\u6790\u7684\u65b0\u8303\u5f0f\"><strong>\u56db\u3001\u52a0\u5bc6\u6d41\u91cf\u5206\u6790\u7684\u65b0\u8303\u5f0f<\/strong><\/h3>\n<p>TLS 1.3\u7684\u666e\u53ca\u4f7f\u5f97\u4f20\u7edf\u6df1\u5ea6\u5305\u68c0\u6d4b\uff08DPI\uff09\u6280\u672f\u5931\u6548\u3002eBPF\u53e6\u8f9f\u8e4a\u5f84\uff0c\u901a\u8fc7<strong>\u5185\u6838\u7a7a\u95f4\u63d0\u53d6\u5143\u6570\u636e<\/strong>\u5b9e\u73b0\u52a0\u5bc6\u6d41\u91cf\u5206\u6790\uff1a<\/p>\n<ul>\n<li><strong>TLS\u6307\u7eb9\u63d0\u53d6<\/strong>\uff1a\u5728\u52a0\u5bc6\u8fde\u63a5\u5efa\u7acb\u524d\u6355\u83b7ClientHello\u62a5\u6587\uff0c\u8bc6\u522b\u6076\u610f\u5ba2\u6237\u7aef\n<\/li>\n<li><strong>\u6d41\u91cf\u884c\u4e3a\u5efa\u6a21<\/strong>\uff1a\u7edf\u8ba1\u52a0\u5bc6\u6d41\u91cf\u7684\u6570\u636e\u5305\u5927\u5c0f\u3001\u4f20\u8f93\u95f4\u9694\u7b49\u7279\u5f81\uff0c\u68c0\u6d4b\u9690\u853d\u4fe1\u9053\n<\/li>\n<li><strong>eBPF+\u673a\u5668\u5b66\u4e60<\/strong>\uff1a\u5f00\u6e90\u9879\u76ee<strong>Kindling<\/strong>\u5c06\u5185\u6838\u4e8b\u4ef6\u8f6c\u5316\u4e3a\u6307\u6807\uff0c\u8bad\u7ec3\u5f02\u5e38\u6d41\u91cf\u5206\u7c7b\u6a21\u578b\n<\/li>\n<\/ul>\n<p>\u67d0CDN\u670d\u52a1\u5546\u91c7\u7528\u8be5\u65b9\u6848\u540e\uff0c<strong>\u52a0\u5bc6\u6316\u77ff\u884c\u4e3a\u7684\u68c0\u51fa\u7387\u63d0\u5347\u4e86300%<\/strong>\uff0c\u4e14CPU\u5360\u7528\u7387\u59cb\u7ec8\u4f4e\u4e8e5%\u3002<\/p>\n<hr>\n<h3 id=\"\u4e94-\u6f0f\u6d1e\u9632\u5fa1-\u4ece\u8865\u4e01\u6ede\u540e\u5230\u8fd0\u884c\u65f6\u514d\u75ab\"><strong>\u4e94\u3001\u6f0f\u6d1e\u9632\u5fa1\uff1a\u4ece\u8865\u4e01\u6ede\u540e\u5230\u8fd0\u884c\u65f6\u514d\u75ab<\/strong><\/h3>\n<p>\u9488\u5bf9Log4j\u3001Spring4Shell\u7b49\u96f6\u65e5\u6f0f\u6d1e\uff0ceBPF\u63d0\u4f9b\u4e86\u72ec\u7279\u7684\u7f13\u89e3\u65b9\u6848\uff1a<\/p>\n<ol>\n<li><strong>\u7cfb\u7edf\u8c03\u7528\u8fc7\u6ee4<\/strong>\uff1a\u963b\u6b62\u6f0f\u6d1e\u5229\u7528\u6240\u9700\u7684<code>execve<\/code>\u6216<code>process_vm_writev<\/code>\u8c03\u7528\n<\/li>\n<li><strong>\u5185\u5b58\u4fdd\u62a4<\/strong>\uff1a\u901a\u8fc7eBPF\u7684kprobes\u76d1\u63a7\u5371\u9669\u7684\u5185\u5b58\u8bfb\u5199\u64cd\u4f5c\n<\/li>\n<li><strong>\u6587\u4ef6\u4fdd\u62a4<\/strong>\uff1a\u9650\u5236\u654f\u611f\u76ee\u5f55\u7684\u5199\u5165\u6743\u9650\uff0c\u963b\u65adWebshell\u4e0a\u4f20\n<\/li>\n<\/ol>\n<p>\u77e5\u540d\u6f0f\u6d1e\u626b\u63cf\u5e73\u53f0<strong>Tracee<\/strong>\u5c31\u5185\u7f6e\u4e86eBPF\u9a71\u52a8\u7684\u68c0\u6d4b\u5f15\u64ce\u3002\u5f53\u68c0\u6d4b\u5230\u8fdb\u7a0b\u8bd5\u56fe\u6267\u884c<code>${jndi:ldap<\/code>\u5b57\u7b26\u4e32\u65f6\uff0c\u7acb\u5373\u7ec8\u6b62\u8fde\u63a5\u5e76\u751f\u6210\u544a\u8b66\u3002\u8fd9\u79cd<strong>\u65e0\u9700\u91cd\u542f\u5e94\u7528\u7684\u70ed\u8865\u4e01\u673a\u5236<\/strong>\uff0c\u4e3a\u4f01\u4e1a\u4e89\u53d6\u4e86\u5b9d\u8d35\u7684\u5e94\u6025\u54cd\u5e94\u65f6\u95f4\u3002<\/p>\n<hr>\n<h3 id=\"\u516d-\u4e91\u539f\u751f\u5b89\u5168\u7684\u5168\u65b0\u5b9e\u8df5\"><strong>\u516d\u3001\u4e91\u539f\u751f\u5b89\u5168\u7684\u5168\u65b0\u5b9e\u8df5<\/strong><\/h3>\n<p>\u5728Kubernetes\u96c6\u7fa4\u4e2d\uff0ceBPF\u6b63\u5728\u91cd\u6784\u5b89\u5168\u9632\u62a4\u4f53\u7cfb\uff1a<\/p>\n<ul>\n<li><strong>Pod\u7f51\u7edc\u7b56\u7565<\/strong>\uff1a\u57fa\u4e8eeBPF\u7684CNI\u63d2\u4ef6\uff08\u5982Cilium\uff09\u5b9e\u73b0\u5fae\u670d\u52a1\u95f4\u7684\u7cbe\u7ec6\u9694\u79bb\n<\/li>\n<li><strong>API\u5ba1\u8ba1<\/strong>\uff1a\u76d1\u63a7kube-apiserver\u8bf7\u6c42\uff0c\u8bc6\u522b\u5f02\u5e38\u7684\u8d44\u6e90\u64cd\u4f5c\u6a21\u5f0f\n<\/li>\n<li><strong>\u8fd0\u884c\u65f6\u9632\u62a4<\/strong>\uff1a\u7ed3\u5408eBPF\u4e0eWASM\uff0c\u5728\u5bb9\u5668\u5185\u5b9e\u65bd\u8f7b\u91cf\u7ea7\u6c99\u7bb1\n<\/li>\n<\/ul>\n<p>\u963f\u91cc\u4e91ACK\u5b89\u5168\u589e\u5f3a\u7248\u7684\u6570\u636e\u663e\u793a\uff0c\u91c7\u7528eBPF\u6280\u672f\u540e\uff0c\u5bb9\u5668\u9003\u9038\u653b\u51fb\u7684\u62e6\u622a\u6210\u529f\u7387\u4ece72%\u63d0\u5347\u81f399.6%\uff0c\u4e14\u7f51\u7edc\u7b56\u7565\u7684\u751f\u6548\u5ef6\u8fdf\u964d\u4f4e\u81f3\u5fae\u79d2\u7ea7\u3002<\/p>\n<hr>\n<h3 id=\"\u4e03-\u5bf9\u6297\u9ad8\u7ea7\u6301\u7eed\u6027\u5a01\u80c1-apt\"><strong>\u4e03\u3001\u5bf9\u6297\u9ad8\u7ea7\u6301\u7eed\u6027\u5a01\u80c1\uff08APT\uff09<\/strong><\/h3>\n<p>\u9762\u5bf9APT\u653b\u51fb\u7684\u957f\u671f\u6f5c\u4f0f\u7279\u6027\uff0ceBPF\u901a\u8fc7<strong>\u6301\u7eed\u5185\u6838\u5ba1\u8ba1<\/strong>\u6784\u5efa\u9632\u5fa1\u7eb5\u6df1\uff1a<\/p>\n<ul>\n<li><strong>\u8fdb\u7a0b\u8840\u7f18\u8ffd\u8e2a<\/strong>\uff1a\u8bb0\u5f55\u8fdb\u7a0b\u6811\u521b\u5efa\u5173\u7cfb\uff0c\u8bc6\u522b\u4f2a\u88c5\u6210\u5408\u6cd5\u670d\u52a1\u7684\u6076\u610f\u5b50\u8fdb\u7a0b\n<\/li>\n<li><strong>\u8de8\u547d\u540d\u7a7a\u95f4\u76d1\u63a7<\/strong>\uff1a\u68c0\u6d4b\u5bb9\u5668\u9003\u9038\u540e\u8bd5\u56fe\u8bbf\u95ee\u5bbf\u4e3b\u673a\u6587\u4ef6\u7cfb\u7edf\u7684\u884c\u4e3a\n<\/li>\n<li><strong>\u9690\u853d\u4fe1\u9053\u53d1\u73b0<\/strong>\uff1a\u5206\u6790ICMP\u3001DNS\u7b49\u534f\u8bae\u7684\u6570\u636e\u5305\u8d1f\u8f7d\u5206\u5e03\u7279\u5f81\n<\/li>\n<\/ul>\n<p>\u5fae\u8f6fAzure\u7684\u5a01\u80c1\u7814\u7a76\u56e2\u961f\u66fe\u516c\u5f00\u6848\u4f8b\uff1a\u901a\u8fc7eBPF\u7a0b\u5e8f\u6301\u7eed\u8ddf\u8e2a\u67d0\u4e2a\u6570\u636e\u5e93\u670d\u52a1\u7684<code>openat<\/code>\u7cfb\u7edf\u8c03\u7528\uff0c\u6700\u7ec8\u53d1\u73b0\u653b\u51fb\u8005\u5229\u7528\u5408\u6cd5PostgreSQL\u5ba2\u6237\u7aef\u5b9e\u65bd\u7684SQL\u6ce8\u5165\u653b\u51fb\u94fe\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00 \u5728\u6570\u5b57\u5316\u6d6a\u6f6e\u5e2d\u5377\u5168\u7403\u7684\u4eca\u5929\uff0c\u7f51\u7edc\u5b89\u5168\u5df2\u6210\u4e3a\u4f01\u4e1a\u751f\u5b58\u7684&rdquo;\u751f\u547d\u7ebf&rdquo;\u3002\u968f\u7740\u653b\u51fb\u624b\u6bb5\u7684\u590d\u6742\u5316\uff0c\u4f20\u7edf\u7684\u5b89\u5168\u9632\u62a4\u6280\u672f\u9010\u6e10\u66b4\u9732\u51fa\u8d44\u6e90\u6d88\u8017\u9ad8\u3001\u54cd\u5e94\u5ef6\u8fdf\u5927\u3001\u53ef\u89c2\u6d4b\u6027\u4e0d\u8db3\u7b49\u77ed\u677f\u3002\u800c\u4e00\u79cd\u540d\u4e3aeBPF\uff08Extended Berkeley Packet Filter\uff09\u7684\u6280\u672f\uff0c\u51ed\u501f\u5176\u5185\u6838\u7ea7\u53ef\u7f16\u7a0b\u80fd\u529b\u548c\u4f4e\u6027\u80fd\u635f\u8017\u7684\u7279\u6027\uff0c\u6b63\u5728\u91cd\u5851\u7f51\u7edc\u5b89\u5168\u7684\u9632\u5fa1\u4f53\u7cfb\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8eBPF\u5982\u4f55\u901a\u8fc7\u5b9e\u65f6\u76d1\u63a7\u3001\u52a8\u6001\u9632\u5fa1\u548c\u6df1\u5ea6\u53ef\u89c2\u6d4b\u6027\uff0c\u5728\u7f51\u7edc\u5b89\u5168\u9886\u57df\u5f00\u8f9f\u51fa\u5168\u65b0\u7684\u5b9e\u8df5\u8def\u5f84\u3002 \u4e00\u3001eBPF\uff1a\u4ece\u6570\u636e\u5305\u8fc7\u6ee4\u5230\u5185\u6838\u53ef\u7f16\u7a0b\u7684\u9769\u547d eBPF\u6700\u521d\u4f5c\u4e3aLinux\u5185\u6838\u7684\u6570\u636e\u5305\u8fc7\u6ee4\u5de5\u5177\uff0c\u7ecf\u8fc7\u5341\u5e74\u6f14\u8fdb\uff0c\u5df2\u53d1\u5c55\u6210\u4e00\u5957\u5b89\u5168\u3001\u9ad8\u6548\u7684\u5185\u6838\u865a\u62df\u673a\u7cfb\u7edf\u3002\u5b83\u5141\u8bb8\u5f00\u53d1\u8005\u5728\u65e0\u9700\u4fee\u6539\u5185\u6838\u6e90\u7801\u7684\u60c5\u51b5\u4e0b\uff0c\u52a8\u6001\u6ce8\u5165\u81ea\u5b9a\u4e49\u7a0b\u5e8f\u5230\u5185\u6838\u7a7a\u95f4\uff0c\u76f4\u63a5\u5bf9\u7f51\u7edc\u6d41\u91cf\u3001\u7cfb\u7edf\u8c03\u7528\u7b49\u5173\u952e\u884c\u4e3a\u8fdb\u884c\u63a7\u5236\u3002\u8fd9\u79cd\u80fd\u529b\u6253\u7834\u4e86\u4f20\u7edf\u5b89\u5168\u5de5\u5177\u4f9d\u8d56\u7528\u6237\u6001\u4ee3\u7406\u7684\u5c40\u9650\uff0c\u4f7f\u5f97\u5b9e\u65f6\u5a01\u80c1\u68c0\u6d4b\u548c\u96f6\u5ef6\u8fdf\u54cd\u5e94\u6210\u4e3a\u53ef\u80fd\u3002 \u6839\u636eLinux\u57fa\u91d1\u4f1a2023\u5e74\u7684\u62a5\u544a\uff0c\u8d85\u8fc765%\u7684\u4e91\u539f\u751f\u4f01\u4e1a\u5df2\u5728\u5176\u5b89\u5168\u67b6\u6784\u4e2d\u96c6\u6210eBPF\u6280\u672f\u3002\u5176\u6838\u5fc3\u4f18\u52bf\u5728\u4e8e\uff1a \u5185\u6838\u6001\u6267\u884c\uff1a\u76f4\u63a5\u5728\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u4e2d\u8fd0\u884c\uff0c\u907f\u514d\u7528\u6237\u6001\u4e0e\u5185\u6838\u6001\u7684\u6570\u636e\u62f7\u8d1d\u5ef6\u8fdf \u7ec6\u7c92\u5ea6\u89c2\u6d4b\uff1a\u652f\u6301\u4ece\u7cfb\u7edf\u8c03\u7528\u5230\u7f51\u7edc\u534f\u8bae\u6808\u7684\u5168\u94fe\u8def\u76d1\u63a7 \u52a8\u6001\u52a0\u8f7d\uff1a\u5b89\u5168\u7b56\u7565\u53ef\u5373\u65f6\u66f4\u65b0\uff0c\u65e0\u9700\u91cd\u542f\u670d\u52a1 \u4e8c\u3001\u5b9e\u65f6\u5165\u4fb5\u68c0\u6d4b\uff1a\u4ece\u88ab\u52a8\u9632\u5fa1\u5230\u4e3b\u52a8\u72e9\u730e \u4f20\u7edf\u7684\u57fa\u4e8e\u89c4\u5219\u7684\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\uff08IDS\uff09\u5e38\u56e0\u89c4\u5219\u5e93\u66f4\u65b0\u6ede\u540e\u800c\u5931\u6548\u3002eBPF\u901a\u8fc7\u52a8\u6001\u8ffd\u8e2a\u5185\u6838\u4e8b\u4ef6\uff0c\u80fd\u591f\u5b9e\u65f6\u6355\u83b7\u5f02\u5e38\u884c\u4e3a\u3002\u4f8b\u5982\uff1a Cilium Security\u5229\u7528eBPF\u76d1\u63a7\u5bb9\u5668\u95f4\u901a\u4fe1\uff0c\u5f53\u68c0\u6d4b\u5230\u672a\u7ecf\u6388\u6743\u7684\u8de8\u8282\u70b9\u8bbf\u95ee\u65f6\uff0c\u7acb\u5373\u89e6\u53d1\u7b56\u7565\u62e6\u622a Falco\u9879\u76ee\u901a\u8fc7eBPF\u8ddf\u8e2a\u7cfb\u7edf\u8c03\u7528\uff0c\u7cbe\u51c6\u8bc6\u522b\u7279\u6743\u63d0\u5347\u3001\u654f\u611f\u6587\u4ef6\u7be1\u6539\u7b49\u653b\u51fb\u6a21\u5f0f \u67d0\u91d1\u878d\u79d1\u6280\u516c\u53f8\u7684\u6848\u4f8b\u663e\u793a\uff0c\u90e8\u7f72\u57fa\u4e8eeBPF\u7684\u68c0\u6d4b\u7cfb\u7edf\u540e\uff0c\u6f0f\u6d1e\u5229\u7528\u653b\u51fb\u7684\u53d1\u73b0\u65f6\u95f4\u4ece\u5c0f\u65f6\u7ea7\u7f29\u77ed\u81f3\u6beb\u79d2\u7ea7\u3002\u8fd9\u5f97\u76ca\u4e8eeBPF\u7a0b\u5e8f\u80fd\u591f\u76f4\u63a5\u5173\u8054\u7f51\u7edc\u5c42\u4e0e\u5e94\u7528\u5c42\u4e8b\u4ef6\uff0c\u6bd4\u5982\u5c06\u67d0\u4e2a\u5f02\u5e38\u7684HTTP\u8bf7\u6c42\u4e0e\u540e\u7eed\u7684\u654f\u611f\u6587\u4ef6\u8bfb\u53d6\u64cd\u4f5c\u8fdb\u884c\u56e0\u679c\u5206\u6790\u3002 \u4e09\u3001\u96f6\u4fe1\u4efb\u67b6\u6784\u7684\u5fae\u89c2\u5b9e\u73b0 \u96f6\u4fe1\u4efb\u5b89\u5168\u6a21\u578b\u8981\u6c42\u5bf9\u6bcf\u4e2a\u8bf7\u6c42\u8fdb\u884c\u6301\u7eed\u9a8c\u8bc1\u3002eBPF\u901a\u8fc7\u5728\u7f51\u7edc\u534f\u8bae\u6808\u7684\u4e0d\u540c\u5c42\u7ea7\u63d2\u5165\u94a9\u5b50\uff08Hook\uff09\uff0c\u5b9e\u73b0\u4e86\u7ec6\u7c92\u5ea6\u7684\u8bbf\u95ee\u63a7\u5236\uff1a \u7f51\u7edc\u5c42\uff1a\u57fa\u4e8eeBPF\u7684\u9632\u706b\u5899\uff08\u5982BPF-based XDP\uff09\u53ef\u4e22\u5f03DDoS\u653b\u51fb\u6d41\u91cf\uff0c\u5904\u7406\u901f\u5ea6\u8fbe\u5343\u4e07\u7ea7\u6570\u636e\u5305\/\u79d2 \u4f20\u8f93\u5c42\uff1a\u52a8\u6001\u751f\u6210\u767d\u540d\u5355\uff0c\u4ec5\u5141\u8bb8\u6388\u6743\u8fdb\u7a0b\u5efa\u7acbTCP\u8fde\u63a5 \u5e94\u7528\u5c42\uff1a\u89e3\u6790TLS\u63e1\u624b\u4fe1\u606f\uff0c\u5b9e\u65bd\u57fa\u4e8e\u8bc1\u4e66\u7684\u8eab\u4efd\u8ba4\u8bc1 \u8c37\u6b4c\u7684\u5fae\u670d\u52a1\u5b89\u5168\u6846\u67b6\u5c31\u6df1\u5ea6\u96c6\u6210\u4e86eBPF\uff0c\u901a\u8fc7\u76d1\u63a7\u670d\u52a1\u7f51\u683c\u4e2d\u7684mTLS\u901a\u4fe1\uff0c\u81ea\u52a8\u9694\u79bb\u672a\u901a\u8fc7\u53cc\u5411\u8ba4\u8bc1\u7684Pod\u3002\u8fd9\u79cd\u534f\u8bae\u611f\u77e5\u578b\u5b89\u5168\u7b56\u7565\uff0c\u663e\u8457\u964d\u4f4e\u4e86\u6a2a\u5411\u6e17\u900f\u98ce\u9669\u3002 \u56db\u3001\u52a0\u5bc6\u6d41\u91cf\u5206\u6790\u7684\u65b0\u8303\u5f0f TLS 1.3\u7684\u666e\u53ca\u4f7f\u5f97\u4f20\u7edf\u6df1\u5ea6\u5305\u68c0\u6d4b\uff08DPI\uff09\u6280\u672f\u5931\u6548\u3002eBPF\u53e6\u8f9f\u8e4a\u5f84\uff0c\u901a\u8fc7\u5185\u6838\u7a7a\u95f4\u63d0\u53d6\u5143\u6570\u636e\u5b9e\u73b0\u52a0\u5bc6\u6d41\u91cf\u5206\u6790\uff1a TLS\u6307\u7eb9\u63d0\u53d6\uff1a\u5728\u52a0\u5bc6\u8fde\u63a5\u5efa\u7acb\u524d\u6355\u83b7ClientHello\u62a5\u6587\uff0c\u8bc6\u522b\u6076\u610f\u5ba2\u6237\u7aef \u6d41\u91cf\u884c\u4e3a\u5efa\u6a21\uff1a\u7edf\u8ba1\u52a0\u5bc6\u6d41\u91cf\u7684\u6570\u636e\u5305\u5927\u5c0f\u3001\u4f20\u8f93\u95f4\u9694\u7b49\u7279\u5f81\uff0c\u68c0\u6d4b\u9690\u853d\u4fe1\u9053 eBPF+\u673a\u5668\u5b66\u4e60\uff1a\u5f00\u6e90\u9879\u76eeKindling\u5c06\u5185\u6838\u4e8b\u4ef6\u8f6c\u5316\u4e3a\u6307\u6807\uff0c\u8bad\u7ec3\u5f02\u5e38\u6d41\u91cf\u5206\u7c7b\u6a21\u578b \u67d0CDN\u670d\u52a1\u5546\u91c7\u7528\u8be5\u65b9\u6848\u540e\uff0c\u52a0\u5bc6\u6316\u77ff\u884c\u4e3a\u7684\u68c0\u51fa\u7387\u63d0\u5347\u4e86300%\uff0c\u4e14CPU\u5360\u7528\u7387\u59cb\u7ec8\u4f4e\u4e8e5%\u3002 \u4e94\u3001\u6f0f\u6d1e\u9632\u5fa1\uff1a\u4ece\u8865\u4e01\u6ede\u540e\u5230\u8fd0\u884c\u65f6\u514d\u75ab \u9488\u5bf9Log4j\u3001Spring4Shell\u7b49\u96f6\u65e5\u6f0f\u6d1e\uff0ceBPF\u63d0\u4f9b\u4e86\u72ec\u7279\u7684\u7f13\u89e3\u65b9\u6848\uff1a \u7cfb\u7edf\u8c03\u7528\u8fc7\u6ee4\uff1a\u963b\u6b62\u6f0f\u6d1e\u5229\u7528\u6240\u9700\u7684execve\u6216process_vm_writev\u8c03\u7528 \u5185\u5b58\u4fdd\u62a4\uff1a\u901a\u8fc7eBPF\u7684kprobes\u76d1\u63a7\u5371\u9669\u7684\u5185\u5b58\u8bfb\u5199\u64cd\u4f5c \u6587\u4ef6\u4fdd\u62a4\uff1a\u9650\u5236\u654f\u611f\u76ee\u5f55\u7684\u5199\u5165\u6743\u9650\uff0c\u963b\u65adWebshell\u4e0a\u4f20 \u77e5\u540d\u6f0f\u6d1e\u626b\u63cf\u5e73\u53f0Tracee\u5c31\u5185\u7f6e\u4e86eBPF\u9a71\u52a8\u7684\u68c0\u6d4b\u5f15\u64ce\u3002\u5f53\u68c0\u6d4b\u5230\u8fdb\u7a0b\u8bd5\u56fe\u6267\u884c${jndi:ldap\u5b57\u7b26\u4e32\u65f6\uff0c\u7acb\u5373\u7ec8\u6b62\u8fde\u63a5\u5e76\u751f\u6210\u544a\u8b66\u3002\u8fd9\u79cd\u65e0\u9700\u91cd\u542f\u5e94\u7528\u7684\u70ed\u8865\u4e01\u673a\u5236\uff0c\u4e3a\u4f01\u4e1a\u4e89\u53d6\u4e86\u5b9d\u8d35\u7684\u5e94\u6025\u54cd\u5e94\u65f6\u95f4\u3002 \u516d\u3001\u4e91\u539f\u751f\u5b89\u5168\u7684\u5168\u65b0\u5b9e\u8df5 \u5728Kubernetes\u96c6\u7fa4\u4e2d\uff0ceBPF\u6b63\u5728\u91cd\u6784\u5b89\u5168\u9632\u62a4\u4f53\u7cfb\uff1a Pod\u7f51\u7edc\u7b56\u7565\uff1a\u57fa\u4e8eeBPF\u7684CNI\u63d2\u4ef6\uff08\u5982Cilium\uff09\u5b9e\u73b0\u5fae\u670d\u52a1\u95f4\u7684\u7cbe\u7ec6\u9694\u79bb API\u5ba1\u8ba1\uff1a\u76d1\u63a7kube-apiserver\u8bf7\u6c42\uff0c\u8bc6\u522b\u5f02\u5e38\u7684\u8d44\u6e90\u64cd\u4f5c\u6a21\u5f0f \u8fd0\u884c\u65f6\u9632\u62a4\uff1a\u7ed3\u5408eBPF\u4e0eWASM\uff0c\u5728\u5bb9\u5668\u5185\u5b9e\u65bd\u8f7b\u91cf\u7ea7\u6c99\u7bb1 \u963f\u91cc\u4e91ACK\u5b89\u5168\u589e\u5f3a\u7248\u7684\u6570\u636e\u663e\u793a\uff0c\u91c7\u7528eBPF\u6280\u672f\u540e\uff0c\u5bb9\u5668\u9003\u9038\u653b\u51fb\u7684\u62e6\u622a\u6210\u529f\u7387\u4ece72%\u63d0\u5347\u81f399.6%\uff0c\u4e14\u7f51\u7edc\u7b56\u7565\u7684\u751f\u6548\u5ef6\u8fdf\u964d\u4f4e\u81f3\u5fae\u79d2\u7ea7\u3002 \u4e03\u3001\u5bf9\u6297\u9ad8\u7ea7\u6301\u7eed\u6027\u5a01\u80c1\uff08APT\uff09 \u9762\u5bf9APT\u653b\u51fb\u7684\u957f\u671f\u6f5c\u4f0f\u7279\u6027\uff0ceBPF\u901a\u8fc7\u6301\u7eed\u5185\u6838\u5ba1\u8ba1\u6784\u5efa\u9632\u5fa1\u7eb5\u6df1\uff1a \u8fdb\u7a0b\u8840\u7f18\u8ffd\u8e2a\uff1a\u8bb0\u5f55\u8fdb\u7a0b\u6811\u521b\u5efa\u5173\u7cfb\uff0c\u8bc6\u522b\u4f2a\u88c5\u6210\u5408\u6cd5\u670d\u52a1\u7684\u6076\u610f\u5b50\u8fdb\u7a0b \u8de8\u547d\u540d\u7a7a\u95f4\u76d1\u63a7\uff1a\u68c0\u6d4b\u5bb9\u5668\u9003\u9038\u540e\u8bd5\u56fe\u8bbf\u95ee\u5bbf\u4e3b\u673a\u6587\u4ef6\u7cfb\u7edf\u7684\u884c\u4e3a \u9690\u853d\u4fe1\u9053\u53d1\u73b0\uff1a\u5206\u6790ICMP\u3001DNS\u7b49\u534f\u8bae\u7684\u6570\u636e\u5305\u8d1f\u8f7d\u5206\u5e03\u7279\u5f81 \u5fae\u8f6fAzure\u7684\u5a01\u80c1\u7814\u7a76\u56e2\u961f\u66fe\u516c\u5f00\u6848\u4f8b\uff1a\u901a\u8fc7eBPF\u7a0b\u5e8f\u6301\u7eed\u8ddf\u8e2a\u67d0\u4e2a\u6570\u636e\u5e93\u670d\u52a1\u7684openat\u7cfb\u7edf\u8c03\u7528\uff0c\u6700\u7ec8\u53d1\u73b0\u653b\u51fb\u8005\u5229\u7528\u5408\u6cd5PostgreSQL\u5ba2\u6237\u7aef\u5b9e\u65bd\u7684SQL\u6ce8\u5165\u653b\u51fb\u94fe\u3002<\/p>\n","protected":false},"author":4,"featured_media":34319,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-34318","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-product-news"],"_links":{"self":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/34318","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/comments?post=34318"}],"version-history":[{"count":1,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/34318\/revisions"}],"predecessor-version":[{"id":34320,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/34318\/revisions\/34320"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media\/34319"}],"wp:attachment":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media?parent=34318"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/categories?post=34318"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/tags?post=34318"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}