{"id":5817,"date":"2025-12-24T10:35:43","date_gmt":"2025-12-24T02:35:43","guid":{"rendered":"https:\/\/www.lalimao.com\/information\/?p=5817"},"modified":"2025-12-24T10:59:25","modified_gmt":"2025-12-24T02:59:25","slug":"%e8%b7%af%e7%94%b1%e8%b7%b3%e6%95%b0%e6%b7%b7%e6%b7%86%ef%bc%9a%e5%8e%9f%e7%90%86%e3%80%81%e9%a3%8e%e9%99%a9%e4%b8%8e%e5%8f%af%e8%90%bd%e5%9c%b0%e7%9a%84%e5%b7%a5%e7%a8%8b%e6%96%b9%e6%a1%88%e5%85%a8","status":"publish","type":"post","link":"https:\/\/www.lalimao.com\/information\/5817.html","title":{"rendered":"\u8def\u7531\u8df3\u6570\u6df7\u6dc6\uff1a\u539f\u7406\u3001\u98ce\u9669\u4e0e\u53ef\u843d\u5730\u7684\u5de5\u7a0b\u65b9\u6848\u5168\u89e3\u6790"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5728\u7f51\u7edc\u5bf9\u6297\u4e0e\u98ce\u63a7\u4f53\u7cfb\u91cc\uff0c\u201c\u8def\u7531\u8df3\u6570\u6df7\u6dc6\u201d\u7ecf\u5e38\u88ab\u7528\u6765\u5bf9\u6297\u57fa\u4e8e\u8def\u5f84\u7279\u5f81\u7684\u8bc6\u522b\uff1a\u6709\u4e9b\u7cfb\u7edf\u4f1a\u901a\u8fc7 <strong>TTL\/Hop Count<\/strong>\u3001Traceroute \u8def\u5f84\u7a33\u5b9a\u6027\u3001AS \u5f52\u5c5e\u3001\u65f6\u5ef6\u6296\u52a8\u7b49\u4fe1\u53f7\uff0c\u63a8\u65ad\u4f60\u662f\u5426\u4f4d\u4e8e\u6570\u636e\u4e2d\u5fc3\u3001\u662f\u5426\u8d70\u4e86\u96a7\u9053\u3001\u662f\u5426\u5b58\u5728\u4e2d\u95f4\u8f6c\u53d1\u8282\u70b9\uff0c\u4ece\u800c\u89e6\u53d1\u9650\u901f\u3001\u6311\u6218\u6216\u5c01\u7981\u3002\u8df3\u6570\u4e00\u65e6\u53d8\u6210\u201c\u6307\u7eb9\u201d\uff0c\u8def\u5f84\u5c31\u4e0d\u518d\u53ea\u662f\u4f20\u8f93\u901a\u9053\uff0c\u800c\u4f1a\u66b4\u9732\u4f60\u7684\u7f51\u7edc\u5f62\u6001\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u8df3\u6570\u4f1a\u66b4\u9732\u4f60<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5178\u578b\u903b\u8f91\u662f\uff1a\u5ba2\u6237\u7aef\u53d1\u5305\u65f6\u643a\u5e26\u521d\u59cb TTL\uff08\u4e0d\u540c\u7cfb\u7edf\u9ed8\u8ba4\u503c\u5e38\u89c1 64\/128\/255\uff09\uff0c\u5230\u8fbe\u76ee\u6807\u65f6 TTL \u4f1a\u51cf\u53bb\u6cbf\u9014\u8def\u7531\u5668\u6570\u3002\u670d\u52a1\u7aef\u89c2\u5bdf\u5230\u7684 TTL\uff0c\u7ed3\u5408\u5e38\u89c1\u9ed8\u8ba4\u503c\u731c\u6d4b\uff0c\u5c31\u80fd\u53cd\u63a8\u51fa\u201c\u53ef\u80fd\u7684\u8df3\u6570\u201d\u3002\u5982\u679c\u67d0\u4e2a\u6765\u6e90\u7684\u8df3\u6570\u957f\u671f\u5f02\u5e38\u7a33\u5b9a\u3001\u6216\u660e\u663e\u504f\u79bb\u540c\u5730\u533a\/\u540c ISP \u5e38\u6001\uff0c\u5c31\u5bb9\u6613\u88ab\u6807\u8bb0\u3002\u518d\u53e0\u52a0 RTT\u3001TCP \u9009\u9879\u3001\u62e5\u585e\u7a97\u53e3\u53d8\u5316\u7b49\u4fe1\u53f7\uff0c\u8bc6\u522b\u7387\u4f1a\u8fdb\u4e00\u6b65\u63d0\u5347\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5e38\u89c1\u201c\u8def\u7531\u8df3\u6570\u6df7\u6dc6\u201d\u601d\u8def\uff08\u4ece\u6613\u5230\u96be\uff09<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>TTL \u89c4\u8303\u5316\uff08\u6700\u7a33\uff09<\/strong><br>\u5728\u51fa\u53e3\u7f51\u5173\u628a\u6240\u6709\u6d41\u91cf\u7684 TTL \u7edf\u4e00\u5230\u56fa\u5b9a\u503c\uff08\u4f8b\u5982\u53d1\u51fa\u524d\u8bbe\u4e3a 64 \u6216 128\uff09\uff0c\u8ba9\u5230\u8fbe\u76ee\u6807\u7684 TTL \u5206\u5e03\u66f4\u50cf\u201c\u666e\u901a\u7ec8\u7aef\u201d\u3002\u5b9e\u73b0\u65b9\u5f0f\u901a\u5e38\u5728\u8fb9\u754c\u8bbe\u5907\u505a\u5305\u6539\u5199\uff08iptables\/nftables\u3001eBPF\u3001\u8def\u7531\u5668\u7b56\u7565\uff09\u3002\u4f18\u70b9\u662f\u7a33\u5b9a\u3001\u53ef\u63a7\uff1b\u7f3a\u70b9\u662f\u5982\u679c\u53ea\u6539 TTL \u4e0d\u6539\u5176\u4ed6\u7279\u5f81\uff0c\u4ecd\u53ef\u80fd\u88ab\u8054\u52a8\u4fe1\u53f7\u8bc6\u522b\u3002<\/li>\n\n\n\n<li><strong>TTL 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\u7684\u8bca\u65ad\u5de5\u5177\u3002\u5efa\u8bae\u53ea\u5bf9\u7279\u5b9a\u4e1a\u52a1\u6d41\u91cf\u542f\u7528\uff0c\u5e76\u505a\u7070\u5ea6\u89c2\u5bdf\u3002<\/li>\n\n\n\n<li><strong>\u8def\u5f84\u591a\u6837\u5316\uff08\u8ba9\u201c\u8df3\u6570\u7a33\u5b9a\u6027\u201d\u5931\u6548\uff09<\/strong><br>\u540c\u4e00\u4e1a\u52a1\u5728\u591a\u4e2a\u51fa\u53e3\u4e4b\u95f4\u505a\u7b56\u7565\u8def\u7531\uff08PBR\uff09\u6216\u8d1f\u8f7d\u5206\u62c5\uff0c\u751a\u81f3\u6309\u76ee\u6807\u57df\u540d\/\u7aef\u53e3\u5206\u6d41\uff0c\u8ba9\u8def\u5f84\u4e0e\u8df3\u6570\u4e0d\u518d\u957f\u671f\u56fa\u5b9a\u3002\u6ce8\u610f\u8981\u5904\u7406\u4f1a\u8bdd\u4fdd\u6301\uff08\u56db\u5143\u7ec4\u4e00\u81f4\u6027\uff09\u3001TLS \u590d\u7528\u4e0e\u8fde\u63a5\u8fc1\u79fb\uff0c\u5426\u5219\u5bb9\u6613\u5f15\u53d1\u4e1a\u52a1\u5f02\u5e38\u3002<\/li>\n\n\n\n<li><strong>\u96a7\u9053\/\u8986\u76d6\u7f51\u7edc\u7684\u201c\u663e\u9690\u201d\u63a7\u5236<\/strong><br>VPN\u3001GRE\u3001WireGuard\u3001IPsec\u3001SRv6 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768w, https:\/\/www.lalimao.com\/information\/wp-content\/uploads\/c9fc621e-ddd7-487b-b7af-4dca7e734f8a-300x200.png 300w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u5957\u53ef\u843d\u5730\u7684\u7ec4\u5408\u65b9\u6848\uff08\u63a8\u8350\uff09<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u8fb9\u754c\u7f51\u5173\uff1aTTL \u7edf\u4e00 + \u5c0f\u5e45\u6296\u52a8\uff08\u6309\u4e1a\u52a1\u767d\u540d\u5355\uff09<\/strong><\/li>\n\n\n\n<li><strong>\u51fa\u53e3\u5c42\uff1a\u591a\u51fa\u53e3\u7b56\u7565\u8def\u7531 + \u4f1a\u8bdd\u4fdd\u6301<\/strong>\uff08\u907f\u514d\u8fde\u63a5\u6f02\u79fb\uff09<\/li>\n\n\n\n<li><strong>\u53ef\u89c2\u6d4b\u6027\uff1a\u5bf9\u5185\u4fdd\u7559\u5b8c\u6574 traceroute\/telemetry<\/strong>\uff0c\u5bf9\u5916\u4ec5\u505a\u6700\u5c0f\u5316\u66b4\u9732<\/li>\n\n\n\n<li><strong>\u8054\u52a8\u4f2a\u88c5\uff1a\u540c\u65f6\u5173\u6ce8 TCP\/IP \u6307\u7eb9\u3001DNS \u884c\u4e3a\u3001TLS \u6307\u7eb9\u3001\u65f6\u5ef6\u753b\u50cf<\/strong><br>\u4ec5\u505a\u201c\u8def\u7531\u8df3\u6570\u6df7\u6dc6\u201d\u5f80\u5f80\u4e0d\u591f\uff0c\u9700\u8981\u628a\u5b83\u5f53\u4f5c\u6574\u5957\u7f51\u7edc\u753b\u50cf\u6cbb\u7406\u7684\u4e00\u73af\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f60\u53ef\u80fd\u5ffd\u7565\u7684\u526f\u4f5c\u7528<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>TTL \u6539\u5199\u4f1a\u8ba9\u90e8\u5206\u94fe\u8def\u8bca\u65ad\u3001MTR \u7ed3\u679c\u5931\u771f\uff1b<\/li>\n\n\n\n<li>\u8fc7\u5ea6\u6296\u52a8\u53ef\u80fd\u89e6\u53d1\u5bf9\u65b9\u5f02\u5e38\u68c0\u6d4b\uff08\u201c\u566a\u58f0\u8fc7\u4e8e\u89c4\u5219\u201d\uff09\uff1b<\/li>\n\n\n\n<li>\u591a\u51fa\u53e3\u5206\u6d41\u5982\u679c\u6ca1\u505a\u4f1a\u8bdd\u4e00\u81f4\u6027\uff0c\u4f1a\u5bfc\u81f4\u767b\u5f55\u6001\u4e22\u5931\u3001\u9a8c\u8bc1\u7801\u9891\u7387\u4e0a\u5347\uff1b<\/li>\n\n\n\n<li>\u8fc7\u6ee4 ICMP \u53ef\u80fd\u5f71\u54cd PMTUD\uff08\u8def\u5f84 MTU 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TTL\/Hop Co 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