\n \u5355\u51ed TTL \u65e0\u6cd5\u5bf9\u201c\u6076\u610f\u884c\u4e3a\u201d\u7ed9\u51fa\u76d6\u68fa\u5b9a\u8bba\uff0c\u4f46\u5b83\u5f80\u5f80\u4f1a\u6cc4\u9732\u7ec6\u5fae\u7ebf\u7d22\u3002\u6bd4\u5982\uff0c\u5bf9\u4e00\u540d\u7f8e\u56fd\u7528\u6237\u8bbf\u95ee\u4f60\u5728\u7f8e\u56fd\u7684\u7ec8\u7aef\u6765\u8bf4\uff0c\u5982\u679c\u5386\u53f2\u4e0a\u770b\u5230\u7684\u5269\u4f59 TTL \u4e00\u76f4\u662f\u4e24\u4f4d\u6570\uff0c\u90a3\u4e48\u6389\u5230\u4e2a\u4f4d\u6570\u5f80\u5f80\u610f\u5473\u7740\u5b8c\u5168\u4e0d\u540c\u7684\u5165\u53e3\u70b9\u5728\u53c2\u4e0e\u3002\u5982\u679c\u65b0\u7684\u7ec8\u7aef\u5730\u7406\u5b9a\u4f4d\u843d\u5728\u53e6\u4e00\u5757\u5927\u9646\uff0c\u6216\u8005\u96b6\u5c5e\u4e8e\u4e0d\u53d7\u4fe1\u4efb\u7684\u5bbd\u5e26\u670d\u52a1\u5546\uff0c\u8fd9\u6837\u7684\u4f4e\u5269\u4f59\u8df3\u6570\u5f88\u53ef\u80fd\u662f\u4f60\u5728\u51fa\u73b0\u66f4\u660e\u663e\u5f02\u5e38\u4e4b\u524d\u6700\u65e9\u80fd\u6355\u6349\u5230\u7684\u4fe1\u53f7\u3002\n <\/p>\n

\u5b9e\u6218\u8bca\u65ad\uff1a\u50cf\u7f51\u7edc\u53d6\u8bc1\u5957\u4ef6\u90a3\u6837\u63a2\u6d4b\u8def\u5f84<\/strong><\/h2>\n

\n \u5f53\u4f60\u6000\u7591\u7f51\u7edc\u5e95\u5ea7\u5728\u201c\u641e\u82b1\u6837\u201d\u65f6\uff0c\u9700\u8981\u4e00\u5957\u53ef\u91cd\u590d\u3001\u53ef\u4ea4\u63a5\u7684\u6d41\u7a0b\uff0c\u8ba9\u4efb\u4f55\u503c\u73ed\u5de5\u7a0b\u5e08\u90fd\u80fd\u6309\u6b65\u9aa4\u6267\u884c\u3002\u8fd9\u6837\u4e00\u5957\u6d41\u7a0b\u4f9d\u8d56\u719f\u6089\u7684\u547d\u4ee4\u884c\u5de5\u5177\uff0c\u4f46\u66f4\u5f3a\u8c03\u4ece\u54ea\u91cc\u8fd0\u884c\u3001\u5982\u4f55\u89e3\u8bfb\u8fd9\u4e9b\u6570\u5b57\uff1b\u5728\u8fd9\u4e2a\u9636\u6bb5\uff0c\u4e00\u81f4\u6027\u6bd4\u82b1\u54e8\u7684\u53ef\u89c6\u5316\u66f4\u91cd\u8981\u3002\n <\/p>\n

\n
1. \n \u4ece\u591a\u4e2a\u89c2\u6d4b\u70b9\u6293\u53d6\u3002<\/strong>\u4f7f\u7528\u5206\u5e03\u5728\u4e0d\u540c\u8fd0\u8425\u5546\u3001\u533a\u57df\u548c\u81ea\u6cbb\u7cfb\u7edf\u4e0a\u7684\u673a\u5668\u3002\u4ece\u7528\u6237\u6240\u5728\u533a\u57df\u5411\u7f8e\u56fd\u4e1a\u52a1\u6240\u5728\u533a\u57df\u53d1\u8d77\u8fde\u901a\u6027\u6d4b\u8bd5\uff0c\u8bb0\u5f55\u5269\u4f59\u8df3\u6570\u4e0e\u4e22\u5305\u6a21\u5f0f\u3002\n <\/li>\n
2. \n \u5bf9\u6bd4 DNS \u54cd\u5e94\u3002<\/strong>\u4f7f\u7528 dig<\/code> \u548c nslookup<\/code> \u7b49\u5de5\u5177\uff0c\u67e5\u770b\u5404\u7c7b\u89e3\u6790\u5668\u5b9e\u9645\u7ed9\u51fa\u7684 IP\u3002\u91cd\u70b9\u5173\u6ce8\u516c\u5171\u9012\u5f52 DNS\u3001\u4f01\u4e1a\u9012\u5f52 DNS \u4e0e\u6743\u5a01 DNS \u4e4b\u95f4\u8fd4\u56de\u7ed3\u679c\u7684\u5dee\u5f02\u3002\n <\/li>\n
3. \n \u5b8c\u6574\u8ffd\u8e2a\u8def\u5f84\u3002<\/strong>\u8fd0\u884c traceroute<\/code> \u6216 mtr<\/code>\uff0c\u6807\u8bb0\u73b0\u5728\u51fa\u73b0\u7684\u662f\u54ea\u4e9b\u81ea\u6cbb\u7cfb\u7edf\u3002\u8981\u4fdd\u5b58\u5386\u53f2\u8f93\u51fa\uff0c\u4ee5\u4fbf\u5bf9\u6bd4\u4e2d\u95f4\u8fd0\u8425\u5546\u7684\u53d8\u5316\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u7ec8\u7aef\u7684\u53d8\u5316\u3002\n <\/li>\n
4. \n \u6821\u9a8c\u8bc1\u7ec8\u7aef\u8eab\u4efd\u3002<\/strong>\u68c0\u67e5 TLS \u8bc1\u4e66\u94fe\u3001\u52a0\u5bc6\u5957\u4ef6\u548c\u670d\u52a1\u5668 Banner\uff0c\u786e\u8ba4\u5f53\u524d\u5bf9\u8bdd\u5bf9\u8c61\u7684\u6307\u7eb9\u4e0e\u539f\u672c\u6253\u7b97\u66b4\u9732\u5728\u4e92\u8054\u7f51\u4e0a\u7684\u90a3\u53f0\u673a\u5668\u4e00\u81f4\u3002\n <\/li>\n
5. \n \u67e5\u627e\u5185\u5bb9\u5f02\u5e38\u3002<\/strong>\u7528 curl \u6293\u53d6\u7ec8\u7aef\u54cd\u5e94\uff0c\u5c06 HTML\u3001JavaScript \u548c HTTP \u5934\u4e0e\u201c\u5df2\u77e5\u826f\u597d\u201d\u57fa\u7ebf\u8fdb\u884c\u6bd4\u5bf9\u3002\u53ef\u4ee5\u5229\u7528\u5e26\u8c03\u8bd5\u6a21\u5f0f\u7684\u9884\u53d1\u5e03\u73af\u5883\u8fdb\u884c\u5b57\u8282\u7ea7 Diff\u3002\n <\/li>\n<\/ol>\n

   \n \u53ea\u8981\u89c2\u6d4b\u70b9\u8db3\u591f\u591a\uff0c\u52a0\u4e0a\u6709\u7eaa\u5f8b\u7684\u5206\u6790\u6d41\u7a0b\uff0c\u4f60\u901a\u5e38\u53ef\u4ee5\u5206\u8fa8\uff1a\u5230\u5e95\u662f\u65e0\u5bb3\u7684\u4f20\u8f93\u7b56\u7565\u53d8\u66f4\uff0c\u8fd8\u662f\u67d0\u4e2a\u653b\u51fb\u8005\u6216\u914d\u7f6e\u9519\u8bef\u7684\u4e2d\u95f4\u76d2\u5728\u4e3b\u52a8\u7be1\u6539\u6d41\u91cf\u3002TTL \u53ea\u662f\u8fd9\u4e2a\u53d6\u8bc1\u62fc\u56fe\u4e2d\u7684\u4e00\u4e2a\u7ef4\u5ea6\uff0c\u5374\u683c\u5916\u6709\u4ef7\u503c\uff0c\u56e0\u4e3a\u653b\u51fb\u8005\u5f80\u5f80\u4f4e\u4f30\u4e86\u81ea\u5df1\u5bf9\u8fd9\u4e9b\u5e95\u5c42\u6307\u6807\u9020\u6210\u7684\u53ef\u89c1\u6270\u52a8\u3002\n <\/p>\n

   \u5f53\u8def\u7531\u53d8\u602a\u4f46\u6d41\u91cf\u4ecd\u7136\u662f\u4f60\u7684\uff1a\u600e\u4e48\u505a<\/strong><\/h2>\n

   \n \u5047\u8bbe\u4f60\u5df2\u7ecf\u786e\u8ba4\uff0c\u5c3d\u7ba1\u8def\u5f84\u770b\u8d77\u6765\u5f88\u5947\u602a\u3001\u5269\u4f59\u8df3\u6570\u53d8\u4f4e\uff0c\u4f46\u6d41\u91cf\u6700\u7ec8\u4ecd\u7136\u843d\u5728\u4f60\u81ea\u5df1\u7684\u786c\u4ef6\u6216\u6258\u7ba1\u73af\u5883\u4e0a\uff0c\u90a3\u4e48\u95ee\u9898\u7684\u672c\u8d28\u66f4\u504f\u5411\u6027\u80fd\u4e0e\u97e7\u6027\uff0c\u800c\u975e\u7acb\u523b\u7684\u5165\u4fb5\u3002\u6b64\u65f6\u53ef\u4ee5\u628a\u5b83\u5f53\u6210\u4e00\u7c7b\u5bb9\u91cf\u6216\u8def\u5f84\u4f18\u5316\u95ee\u9898\uff0c\u5145\u5206\u4f9d\u8d56\u4e0a\u6e38\u670d\u52a1\u5546\u63d0\u4f9b\u7684\u624b\u6bb5\u3002\n <\/p>\n

   \n
   • \n \u5411\u4f60\u7684 Transit \u6216\u6570\u636e\u4e2d\u5fc3\u8fd0\u8425\u65b9\u63d0\u4ea4\u8be6\u7ec6\u5de5\u5355\uff0c\u9644\u4e0a traceroute \u8f93\u51fa\u3001\u65f6\u95f4\u6233\u4ee5\u53ca\u51fa\u73b0\u7ed5\u8def\u73b0\u8c61\u7684\u6765\u6e90\u7f51\u7edc\u3002\n <\/li>\n
   • \n \u5982\u679c\u4f60\u4f7f\u7528\u4e86\u9ad8\u7aef\u56fd\u9645\u9aa8\u5e72\u7b49\u4e13\u9879\u8fde\u63a5\u65b9\u6848\uff0c\u8981\u6c42\u5bf9\u65b9\u660e\u786e\u8bf4\u660e\u5f53\u524d\u662f\u5982\u4f55\u53d1\u5e03\u4f60\u7684\u8def\u7531\uff0c\u4ee5\u53ca\u504f\u597d\u7684\u5bf9\u7b49\u4f19\u4f34\u3002\n <\/li>\n
   • \n \u5728\u4f60\u53ef\u63a7\u7684\u7b56\u7565\u8303\u56f4\u5185\uff0c\u901a\u8fc7\u8c03\u6574\u672c\u5730\u4f18\u5148\u7ea7\u6216 BGP \u793e\u533a\uff0c\u5c06\u51fa\u5165\u7ad9\u6d41\u91cf\u5f15\u5bfc\u5230\u66f4\u53ef\u9884\u6d4b\u7684\u94fe\u8def\u4e0a\uff0c\u4f7f\u6574\u4f53\u8df3\u6570\u66f4\u63a5\u8fd1\u4f60\u7684\u5386\u53f2\u57fa\u7ebf\u3002\n <\/li>\n<\/ul>\n

     \n \u5728\u7f8e\u56fd\u7684\u670d\u52a1\u5668\u79df\u7528\u548c\u670d\u52a1\u5668\u6258\u7ba1\u73af\u5883\u4e2d\uff0c\u4f60\u901a\u5e38\u53ef\u4ee5\u4f7f\u7528\u591a\u6761\u4e0a\u8054\u3001\u591a\u4e2a IX \u8fde\u63a5\u4ee5\u53ca\u4e30\u5bcc\u7684\u6d41\u91cf\u5de5\u7a0b\u624b\u6bb5\u3002\u628a\u8fd9\u4e9b\u89c6\u4e3a\u53ef\u7f16\u7a0b\u57fa\u7840\u8bbe\u65bd\uff1a\u5982\u679c\u4f60\u7684\u57fa\u7ebf\u663e\u793a\u67d0\u5bb6\u4f9b\u5e94\u5546\u5728\u7279\u5b9a\u5730\u57df\u4e0a\u957f\u671f\u62c9\u9ad8\u8df3\u6570\u548c\u5ef6\u8fdf\uff0c\u90a3\u4e48\u5373\u4fbf\u6210\u672c\u7565\u9ad8\uff0c\u4e5f\u503c\u5f97\u628a\u90a3\u90e8\u5206\u6d41\u91cf\u8f6c\u79fb\u5230\u884c\u4e3a\u66f4\u7a33\u5b9a\u7684\u8fd0\u8425\u5546\u4e0a\u3002\n <\/p>\n

     \u95fb\u8d77\u6765\u50cf\u52ab\u6301\u65f6\uff1a\u6309\u5b89\u5168\u4e8b\u4ef6\u54cd\u5e94<\/strong><\/h2>\n

     \n \u4e00\u65e6 traceroute \u660e\u786e\u6307\u5411\u201c\u6d41\u6c13\u7f51\u7edc\u201d\uff0c\u6216\u8005\u5185\u5bb9\u4e0e\u6784\u5efa\u6d41\u6c34\u7ebf\u5b9e\u9645\u4ea7\u51fa\u7684\u5de5\u4ef6\u53d1\u751f\u504f\u79bb\uff0c\u8fd9\u5c31\u4e0d\u518d\u662f\u7406\u8bba\u95ee\u9898\u3002\u4f60\u9762\u5bf9\u7684\u5f88\u53ef\u80fd\u662f\u88ab\u6295\u6bd2\u7684\u89e3\u6790\u5668\u3001\u8def\u5f84\u4e0a\u7684\u653b\u51fb\u8005\uff0c\u6216\u8005\u4ea4\u4ed8\u94fe\u4e0a\u7684\u88ab\u653b\u9677\u7ec4\u4ef6\u3002\u6b64\u65f6 TTL \u4ecd\u7136\u662f\u8f85\u52a9\u8bc1\u4eba\uff0c\u4f46\u4f60\u7684\u5de5\u4f5c\u91cd\u5fc3\u5e94\u5c3d\u5feb\u8f6c\u5411\u9694\u79bb\u548c\u8bc1\u636e\u6536\u96c6\u3002\n <\/p>\n

     \n
     1. \n \u6536\u7d27\u57df\u540d\u670d\u52a1\u3002<\/strong>\u5ba1\u8ba1\u57df\u540d\u6ce8\u518c\u5546\u3001\u7ba1\u7406\u8d26\u53f7\u4ee5\u53ca\u6743\u5a01 DNS \u914d\u7f6e\u3002\u8f6e\u6362\u51ed\u8bc1\u3001\u5f00\u542f\u591a\u56e0\u7d20\u8ba4\u8bc1\uff0c\u56de\u6eaf\u5386\u53f2\u53d8\u66f4\u8bb0\u5f55\uff0c\u786e\u8ba4\u6ca1\u6709\u4eba\u9759\u6084\u6084\u6539\u8fc7\u4f60\u7684\u533a\u6570\u636e\u3002\n <\/li>\n
     2. \n \u52a0\u56fa\u52a0\u5bc6\u59ff\u6001\u3002<\/strong>\u5f3a\u5236\u542f\u7528\u4e25\u683c\u4f20\u8f93\u5b89\u5168\uff0c\u7981\u7528\u5f31\u534f\u8bae\uff1b\u5982\u679c\u5b58\u5728\u5bc6\u94a5\u6750\u6599\u66b4\u9732\u6216\u88ab\u8bef\u7528\u7684\u53ef\u80fd\uff0c\u5c31\u91cd\u65b0\u7b7e\u53d1\u8bc1\u4e66\u3002\n <\/li>\n
     3. \n \u6536\u96c6\u9065\u6d4b\u6570\u636e\u3002<\/strong>\u5bfc\u51fa\u8def\u7531\u5668\u65e5\u5fd7\u3001DNS \u67e5\u8be2\u65e5\u5fd7\u548c\u8fb9\u7f18\u8bbf\u95ee\u65e5\u5fd7\u3002\u4ece\u5c3d\u53ef\u80fd\u591a\u7684\u533a\u57df\u6293\u53d6\u53ef\u7591 traceroute \u4e0e dig \u8f93\u51fa\uff0c\u7559\u4f5c\u540e\u7eed\u6839\u56e0\u5206\u6790\u3002\n <\/li>\n
     4. \n \u8054\u52a8\u4e0a\u6e38\u4e0e\u76d1\u7ba1\u65b9\uff08\u5982\u6709\u9700\u8981\uff09\u3002<\/strong>\u5728\u5408\u89c4\u524d\u63d0\u4e0b\uff0c\u4e0e\u4e0a\u6e38\u7f51\u7edc\u3001\u5b89\u5168\u5382\u5546\u6216\u5e94\u6025\u54cd\u5e94\u56e2\u961f\u5171\u4eab\u8bc1\u636e\uff1b\u5982\u679c\u6d41\u91cf\u88ab\u91cd\u5b9a\u5411\u7a7f\u8d8a\u4e86\u610f\u6599\u4e4b\u5916\u7684\u4e3b\u6743\u8fb9\u754c\uff0c\u53ef\u80fd\u8fd8\u4f1a\u89e6\u53d1\u5408\u89c4\u4e0e\u76d1\u7ba1\u4e49\u52a1\u3002\n <\/li>\n<\/ol>\n

        \n \u5173\u952e\u662f\u4e0d\u8981\u5bf9\u4efb\u4f55\u5355\u4e00\u6280\u672f\u6307\u6807\u4ea7\u751f\u201c\u96a7\u9053\u89c6\u91ce\u201d\u3002\u867d\u7136\u5269\u4f59 TTL \u7684\u65ad\u5d16\u5f0f\u4e0b\u8dcc\u53ef\u4ee5\u6210\u4e3a\u975e\u5e38\u65e9\u671f\u7684\u9884\u8b66\u4fe1\u53f7\uff0c\u4f46\u5fc5\u987b\u4e0e\u5f3a\u8eab\u4efd\u6821\u9a8c\u3001\u5bc6\u7801\u5b66\u9a8c\u8bc1\u53ca\u65e5\u5fd7\u5173\u8054\u5206\u6790\u7ed3\u5408\u8d77\u6765\uff0c\u624d\u80fd\u8bb2\u6e05\u695a\u6d41\u91cf\u7a76\u7adf\u662f\u5982\u4f55\u504f\u79bb\u4f60\u539f\u672c\u8bbe\u8ba1\u7684\u8def\u5f84\u3002\n <\/p>\n

        \u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u4e0e\u670d\u52a1\u5668\u6258\u7ba1\u67b6\u6784\uff1a\u8ba9\u62d3\u6251\u201c\u8d8a\u8001\u8d8a\u9999\u201d<\/strong><\/h2>\n

        \n \u628a\u7f51\u7edc\u62d3\u6251\u5f53\u4f5c\u201c\u6d3b\u7684\u4ee3\u7801\u201d\uff0c\u800c\u4e0d\u662f\u9759\u6001\u5e03\u7ebf\u56fe\u7684\u5de5\u7a0b\u5e08\uff0c\u80fd\u663e\u8457\u964d\u4f4e\u5f02\u5e38\u8def\u7531\u4e8b\u4ef6\u7684\u7206\u70b8\u534a\u5f84\u3002\u4f18\u79c0\u7684\u670d\u52a1\u5668\u79df\u7528\u4e0e\u670d\u52a1\u5668\u6258\u7ba1\u62d3\u6251\uff0c\u4f1a\u5728\u591a\u4e2a\u7f8e\u56fd\u57ce\u5e02\u95f4\u951a\u5b9a\u670d\u52a1\u5165\u53e3\uff0c\u8ba9\u4f60\u7cbe\u786e\u63a7\u5236\u62a5\u6587\u7684\u8fdb\u51fa\u53e3\u4f4d\u7f6e\uff0c\u5e76\u4e3a\u5728\u4e92\u8054\u7f51\u51fa\u73b0\u5f02\u5e38\u884c\u4e3a\u65f6\u7684\u81ea\u52a8\u5316\u6545\u969c\u5207\u6362\u9884\u7559\u7a7a\u95f4\u3002\n <\/p>\n

        \n
        • \n \u81f3\u5c11\u628a\u5165\u53e3\u70b9\u5206\u5e03\u5728\u4e24\u5927\u533a\u57df\uff08\u4f8b\u5982\u897f\u6d77\u5cb8\u548c\u4e1c\u6d77\u5cb8\uff09\uff0c\u8ba9\u6d41\u91cf\u5728\u8fdb\u5165\u4f60\u7684\u5e73\u53f0\u65f6\u62e5\u6709\u4e0d\u6b62\u4e00\u6761\u53ef\u7528\u8def\u7ebf\u3002\n <\/li>\n
        • \n \u5c06\u8fd9\u4e00\u5e03\u5c40\u4e0e\u5e94\u7528\u611f\u77e5\u8def\u7531\u548c\u5065\u5eb7\u68c0\u67e5\u7ed3\u5408\uff0c\u5f53\u5305\u62ec TTL \u5728\u5185\u7684\u6307\u6807\u6f02\u79fb\u5230\u9884\u671f\u8303\u56f4\u4e4b\u5916\u65f6\uff0c\u5ba2\u6237\u7aef\u53ef\u4ee5\u5e73\u6ed1\u5207\u6362\u5230\u66f4\u5065\u5eb7\u7684\u5165\u53e3\u70b9\u3002\n <\/li>\n
        • \n \u5bf9\u7269\u7406\u673a\u4e0e\u4e91\u4e3b\u673a\u4f7f\u7528\u7edf\u4e00\u7684\u53ef\u89c2\u6d4b\u6027\u57fa\u7ebf\uff0c\u8fd9\u6837\u5f53\u5de5\u4f5c\u8d1f\u8f7d\u5728\u72ec\u7acb\u670d\u52a1\u5668\u4e0e\u865a\u62df\u5316\u8d44\u6e90\u4e4b\u95f4\u8fc1\u79fb\u65f6\uff0c\u4f60\u4e0d\u4f1a\u51fa\u73b0\u76d1\u63a7\u76f2\u533a\u3002\n <\/li>\n<\/ul>\n

          \n \u5728\u8fd9\u4e9b\u6a21\u5f0f\u5230\u4f4d\u7684\u524d\u63d0\u4e0b\uff0c\u6765\u81ea\u67d0\u6761\u8def\u5f84\u5eca\u9053\u7684\u4f4e\u5269\u4f59\u8df3\u6570\u5e76\u4e0d\u4f1a\u81ea\u52a8\u5347\u7ea7\u4e3a\u5168\u7ad9\u4e8b\u6545\u3002\u4f60\u7684\u63a7\u5236\u5e73\u9762\u53ef\u4ee5\u6709\u9009\u62e9\u5730\u964d\u4f4e\u53ef\u7591\u8def\u7531\u7684\u4f18\u5148\u7ea7\uff0c\u540c\u65f6\u5206\u6790\u7cfb\u7edf\u6301\u7eed\u8ffd\u8e2a\u56f4\u7ed5\u7f8e\u56fd\u4e1a\u52a1\u7248\u56fe\u7684\u4e92\u8054\u7f51\u5f62\u6001\u6f14\u53d8\u3002\u4e45\u800c\u4e45\u4e4b\uff0cTTL \u53ea\u4f1a\u6210\u4e3a\u4f60\u591a\u7ef4\u9065\u6d4b\u4f53\u7cfb\u4e2d\u7684\u4e00\u4e2a\u7ef4\u5ea6\uff0c\u800c\u4e0d\u518d\u662f\u5de5\u7a0b\u5e08\u5728\u6df1\u591c\u7535\u8bdd\u4f1a\u4e0a\u4e89\u8bba\u4e0d\u4f11\u7684\u201c\u5b64\u7acb\u4fe1\u53f7\u201d\u3002\n <\/p>\n

          \u6301\u7eed\u76d1\u63a7\uff1a\u6784\u5efa\u4ee5 TTL \u4e3a\u6838\u5fc3\u7684\u9884\u8b66\u7cfb\u7edf<\/strong><\/h2>\n

          \n \u5728\u6545\u969c\u53d1\u751f\u65f6\u4e34\u65f6\u8dd1\u51e0\u6761\u547d\u4ee4\uff0c\u5c31\u50cf\u5728\u751f\u4ea7\u73af\u5883\u91cc\u9760\u6253\u5370\u65e5\u5fd7\u6765\u8c03\u8bd5\u590d\u6742\u7cfb\u7edf\u3002\u5bf9\u771f\u6b63\u4e25\u8083\u7684\u7cfb\u7edf\u6765\u8bf4\uff0cTTL \u5e94\u5f53\u6210\u4e3a\u5e38\u9a7b\u7684\u63a2\u6d4b\u6846\u67b6\u7684\u4e00\u90e8\u5206\uff0c\u8986\u76d6\u5e73\u53f0\u7684\u6574\u4e2a\u66b4\u9732\u9762\uff0c\u5305\u62ec\u5bf9\u5916\u5165\u53e3\u3001\u5185\u90e8 API \u4ee5\u53ca\u5173\u952e\u7ba1\u7406\u63a5\u53e3\u3002\n <\/p>\n

          \n
          1. \n \u4e3a\u6bcf\u4e2a\u533a\u57df\u5b9a\u4e49\u57fa\u7ebf\u3002<\/strong>\u9488\u5bf9\u6bcf\u4e2a\u4e3b\u8981\u6765\u6e90\u533a\u57df\uff0c\u8bb0\u5f55\u5178\u578b\u7684\u5269\u4f59 TTL\u3001\u5ef6\u8fdf\u5206\u5e03\u4ee5\u53ca\u6807\u51c6\u5dee\u533a\u95f4\uff0c\u4ece\u800c\u8bc6\u522b\u5f02\u5e38\u4e8b\u4ef6\u3002\n <\/li>\n
          2. \n \u81ea\u52a8\u5316\u5408\u6210\u68c0\u67e5\u3002<\/strong>\u90e8\u7f72\u8f7b\u91cf\u63a2\u9488\uff0c\u6301\u7eed\u5411\u4f60\u5728\u7f8e\u56fd\u7684\u8282\u70b9\u6267\u884c\u8fde\u901a\u6027\u6d4b\u8bd5\uff0c\u4fdd\u5b58\u5b8c\u6574\u8def\u5f84\u4e0e TTL \u6d88\u8017\u60c5\u51b5\uff0c\u4fbf\u4e8e\u5386\u53f2\u5bf9\u6bd4\u3002\n <\/li>\n
          3. \n \u57fa\u4e8e\u591a\u4fe1\u53f7\u504f\u79fb\u544a\u8b66\u3002<\/strong>\u53ea\u6709\u5f53 TTL \u6307\u6807\u3001\u5ef6\u8fdf\u3001\u9519\u8bef\u7387\u548c\u8eab\u4efd\u6821\u9a8c\u540c\u65f6\u53d1\u751f\u6f02\u79fb\u65f6\u624d\u89e6\u53d1\u544a\u8b66\uff0c\u8fd9\u80fd\u8ba9\u62a5\u8b66\u66f4\u201c\u53ef\u884c\u52a8\u201d\uff0c\u51cf\u5c11\u8bef\u62a5\u3002\n <\/li>\n
          4. \n \u4e0e\u73b0\u6709\u5de5\u5177\u94fe\u96c6\u6210\u3002<\/strong>\u5c06\u5bcc\u5316\u540e\u7684\u7ed3\u679c\u63a8\u5165\u56e2\u961f\u5df2\u6709\u7684\u804a\u5929\u7cfb\u7edf\u3001\u5de5\u5355\u7cfb\u7edf\u6216\u4e8b\u6545\u54cd\u5e94\u5e73\u53f0\uff0c\u5e76\u9644\u4e0a\u6307\u5411\u539f\u59cb traceroute \u4e0e\u57df\u540d\u89e3\u6790\u6570\u636e\u7684\u76f4\u63a5\u94fe\u63a5\u3002\n <\/li>\n<\/ol>\n

             \n \u968f\u7740\u65f6\u95f4\u63a8\u79fb\uff0c\u8fd9\u79cd\u7eaa\u5f8b\u4e25\u660e\u7684\u5b9e\u8df5\u4f1a\u628a\u4e00\u4e2a\u770b\u4f3c\u7c97\u7cd9\u7684\u6574\u6570\uff0c\u53d8\u6210\u8bb2\u8ff0\u201c\u62a5\u6587\u5982\u4f55\u611f\u77e5\u4e92\u8054\u7f51\u201d\u7684\u5f3a\u5927\u53d9\u4e8b\u5de5\u5177\u3002\u5b83\u8fd8\u4f1a\u4e3a\u56e2\u961f\u63d0\u4f9b\u8db3\u591f\u7684\u5386\u53f2\u4e0a\u4e0b\u6587\uff0c\u8ba9\u4f60\u80fd\u5feb\u901f\u5224\u65ad\uff1a\u4eca\u5929\u8fd9\u6b21 TTL \u8d70\u4f4e\uff0c\u662f\u65e0\u804a\u7684\u7b56\u7565\u5fae\u8c03\uff0c\u8fd8\u662f\u67d0\u4e2a\u4eba\u6b63\u8bd5\u56fe\u6084\u6084\u628a\u4e00\u90e8\u5206\u6d41\u91cf\u91cd\u5b9a\u5411\u5230\u4f60\u4ece\u672a\u8ba4\u53ef\u7684\u57fa\u7840\u8bbe\u65bd\u4e0a\u3002\n <\/p>\n

             \u5c3e\u58f0\uff1a\u628a\u6bcf\u4e00\u6b21\u5f02\u5e38\u5f53\u6210\u7ebf\u7d22\uff0c\u800c\u4e0d\u662f\u5224\u51b3\u4e66<\/strong><\/h2>\n

             \n \u964d\u4f4e\u7684 TTL \u65e2\u4e0d\u662f\u5165\u4fb5\u7684\u201c\u5373\u65f6\u62a5\u5230\u8bc1\u201d\uff0c\u4e5f\u4e0d\u662f\u53ef\u4ee5\u4e0d\u52a0\u68c0\u67e5\u5c31\u5ffd\u7565\u7684\u5c0f\u4e8b\u3002\u5bf9\u4f9d\u8d56\u7a33\u5b9a\u8de8\u5883\u8fde\u901a\u6027\u7684\u7f8e\u56fd\u5e73\u53f0\u6765\u8bf4\uff0c\u6700\u806a\u660e\u7684\u59ff\u6001\u5c31\u662f\u4fdd\u6301\u597d\u5947\uff1a\u8bb0\u5f55\u4e00\u5207\u3001\u79ef\u6781\u5173\u8054\uff0c\u7528\u6bcf\u4e00\u6b21\u5f02\u5e38\u6765\u9a71\u52a8\u4e0b\u4e00\u8f6e\u8def\u7531\u8bbe\u8ba1\u6f14\u8fdb\u3002\u5f53\u8fd9\u79cd\u5fc3\u6001\u4e0e\u5bf9\u7f8e\u56fd\u670d\u52a1\u5668 TTL\u3001\u7f51\u7edc\u7ed5\u8def\u3001\u52ab\u6301\u68c0\u6d4b\u6a21\u5f0f\u7684\u4e25\u8c28\u5206\u6790\u7ed3\u5408\u8d77\u6765\u65f6\uff0c\u4f60\u7684\u57fa\u7840\u8bbe\u65bd\u4e0d\u4ec5\u4f1a\u53d8\u5f97\u66f4\u5feb\uff0c\u66f4\u91cd\u8981\u7684\u662f\uff0c\u5b83\u4f1a\u53d8\u5f97\u53ef\u89c2\u6d4b\u3001\u53ef\u89e3\u91ca\u3001\u53ef\u53cd\u590d\u9a8c\u8bc1\u5730\u201c\u503c\u5f97\u4fe1\u4efb\u201d\u3002\n <\/p>\n","protected":false},"excerpt":{"rendered":"

             \u4f60\u7684\u76d1\u63a7\u9762\u677f\u7a81\u7136\u62a5\u8b66\uff1a\u67d0\u4e2a\u5173\u952e\u7f8e\u56fd\u8282\u70b9\u7684\u5269\u4f59\u8df3\u6570\u9aa4\u964d\uff1b\u7b2c\u4e00\u53cd\u5e94\u5f80\u5f80\u662f\u5927\u558a\u201cBGP \u6cc4\u9732\u201d\u6216\u8005\u201c\u6211\u4eec\u88ab\u6253\u7a7f\u4e86\u201d\u3002\u5728\u62c9\u4e0b\u201c\u7ea2\u8272\u62c9\u6746\u201d\u4e4b\u524d\uff0c\u503c\u5f97\u5148\u62c6\u89e3\u4e00\u4e0b\uff0c\u8fd9\u4e2a\u504f\u4f4e\u7684\u6570\u503c\u5230\u5e95\u7f16\u7801\u4e86\u4ec0\u4e48\u542b\u4e49\uff0c\u4ee5\u53ca\u5b83\u4e0e\u771f\u5b9e\u8def\u5f84\u62d3\u6251\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u5c24\u5176\u662f\u5728\u8de8\u5883\u73af\u5883\u4e0b\uff0c\u548c\u7f8e\u56fd\u670d\u52a1\u5668\u7684 TTL\u3001\u7f51\u7edc\u7ed5\u8def\u3001\u52ab\u6301\u68c0\u6d4b\u7b49\u573a\u666f\u7684\u5173\u8054\u3002 \u73b0\u5b9e\u4e16\u754c\u91cc\u7684 TTL\uff1a\u8fd9\u4e2a\u8ba1\u6570\u5668\u771f\u6b63\u4ee3\u8868\u4ec0\u4e48 \u7406\u8bba\u4e0a\uff0c\u8df3\u6570\u8ba1\u6570\u5668\u53ea\u662f\u4e00\u4e2a\u5728\u6bcf\u7ecf\u8fc7\u4e00\u53f0\u8def\u7531\u5668\u65f6\u9012\u51cf\u7684\u6574\u6570\uff1b\u4f46\u5728\u771f\u5b9e\u94fe\u8def\u4e0a\uff0c\u5b83\u662f\u5bf9\u62a5\u6587\u8def\u5f84\u4ee5\u53ca\u53d1\u8d77\u7aef\u7cfb\u7edf\u7684\u4e00\u4e2a\u975e\u5e38\u201c\u6709\u6001\u5ea6\u201d\u7684\u63d0\u793a\u3002\u4e0d\u540c\u534f\u8bae\u6808\u7684\u9ed8\u8ba4\u521d\u59cb\u503c\u5404\u4e0d\u76f8\u540c\uff1b\u4f60\u5e38\u89c1\u7684\u6e90\u7aef\u521d\u59cb\u503c\u6709 64\u3001128 \u6216 255\uff0c\u800c\u4f60\u6d4b\u91cf\u5230\u7684\u4e00\u5207\uff0c\u5176\u5b9e\u90fd\u662f\u62a5\u6587\u5728\u591a\u4e2a\u4ea4\u6362\u57df\u6d88\u8017\u4e4b\u540e\u5269\u4e0b\u7684\u6b8b\u503c\u3002 \u5bf9\u5728\u7f8e\u56fd\u57fa\u7840\u8bbe\u65bd\u4e0a\u8dd1\u5ef6\u8fdf\u654f\u611f\u578b\u4e1a\u52a1\u7684\u5de5\u7a0b\u5e08\u6765\u8bf4\uff0c\u5269\u4f59\u8df3\u6570\u662f\u4e00\u4e2a\u7c97\u7cd9\u4f46\u610f\u5916\u5b9e\u7528\u7684\u4ee3\u7406\u4fe1\u53f7\uff0c\u5b83\u80fd\u544a\u8bc9\u4f60\uff1a\u6d41\u91cf\u7a76\u7adf\u662f\u4ece\u54ea\u91cc\u8fdb\u5165\u4f60\u7684\u81ea\u6cbb\u7cfb\u7edf\uff0c\u53c2\u4e0e\u4f20\u8f93\u7684\u662f\u54ea\u4e9b\u4e0a\u6e38\u8fd0\u8425\u5546\uff0c\u4ee5\u53ca\u662f\u5426\u6709\u67d0\u5bb6\u201c\u795e\u79d8 ISP\u201d\u6084\u6084\u63d2\u5165\u5230\u4e86\u4f60\u7684\u6d41\u91cf\u8def\u5f84\u4e2d\u3002\u628a\u8fd9\u4e9b\u4fe1\u606f\u4e0e\u5f80\u8fd4\u65f6\u5ef6\u548c\u4e22\u5305\u6a21\u5f0f\u7ed3\u5408\u8d77\u6765\uff0c\u5c31\u80fd\u5f97\u5230\u4e00\u4e2a\u6210\u672c\u6781\u4f4e\u4f46\u5a01\u529b\u4e0d\u4fd7\u7684\u53ef\u89c2\u6d4b\u6027\u5de5\u5177\uff0c\u5176\u80fd\u529b\u8fdc\u8d85\u4f20\u7edf\u7684 ping \u68c0\u67e5\u3002 \u5f53\u7528\u6237 ping \u4f60\u7684\u8fb9\u754c\u65f6\uff0c\u4ed6\u4eec\u4ece\u770b\u4e0d\u5230\u62a5\u6587\u7684\u521d\u59cb TTL\uff0c\u800c\u53ea\u80fd\u770b\u5230\u62a5\u6587\u5728\u201c\u5b58\u6d3b\u201d\u65c5\u7a0b\u7ed3\u675f\u540e\u6240\u5269\u4e0b\u7684\u8df3\u6570\u3002\u4e00\u4e2a\u5178\u578b\u6a21\u5f0f\u662f\uff1a\u67d0\u53f0 Linux \u673a\u5668\u4ee5 64 \u8d77\u6b65\uff0c\u6d88\u8017\u5927\u7ea6 10\u201315 \u8df3\u62b5\u8fbe\u7f8e\u56fd\u897f\u6d77\u5cb8\u7684\u6570\u636e\u4e2d\u5fc3\uff0c\u6700\u7ec8\u5230\u8fbe\u65f6\u5269\u4f59\u7ea6 49\u201354\u3002\u5982\u679c\u4f60\u5bf9\u8be5\u6765\u6e90\u533a\u57df\u7684\u5386\u53f2\u57fa\u7ebf\u4e00\u76f4\u662f\u5269\u4f59\u503c\u5728 50 \u5de6\u53f3\uff0c\u800c\u73b0\u5728\u7a81\u7136\u5f00\u59cb\u770b\u5230\u53ea\u6709\u5341\u51e0\u751a\u81f3\u66f4\u4f4e\u7684\u6570\u503c\uff0c\u90a3\u5c31\u8bf4\u660e\u8def\u7531\u7b56\u7565\u6216\u771f\u5b9e\u54cd\u5e94\u4f60\u7684\u90a3\u53f0\u673a\u5668\u53d1\u751f\u4e86\u53d8\u5316\u3002 \u5f53\u504f\u4f4e\u7684\u5269\u4f59\u503c\u53ea\u662f\u67af\u71e5\u7684\u8def\u5f84\u81a8\u80c0 \u4e0d\u662f\u6bcf\u4e00\u6b21\u8df3\u6570\u4e0b\u964d\u90fd\u5728\u9ad8\u558a\u201c\u653b\u51fb\u201d\u3002\u5f53\u4f60\u4ece\u8de8\u6d32\u94fe\u8def\u63a5\u5165\u7f8e\u56fd\u6570\u636e\u4e2d\u5fc3\u65f6\uff0c\u8def\u5f84\u81a8\u80c0\uff08path inflation\uff09\u975e\u5e38\u5e38\u89c1\uff1b\u5982\u679c\u4e1a\u52a1\u53c8\u53e0\u4e86 DDoS \u6e05\u6d17\u3001\u5e94\u7528\u9632\u706b\u5899\u6216\u6fc0\u8fdb\u7684\u6d41\u91cf\u5de5\u7a0b\u7b56\u7565\uff0c\u8fd9\u79cd\u73b0\u8c61\u4f1a\u66f4\u52a0\u660e\u663e\u3002\u8fd0\u8425\u5546\u5728\u505a\u5bb9\u91cf\u91cd\u5e73\u8861\u6216\u89c4\u907f\u62e5\u585e\u65f6\uff0c\u7ecf\u5e38\u4f1a\u5f15\u5165\u989d\u5916\u7684\u4e2d\u8f6c\u6bb5\u3002 \u8de8\u5883\u8def\u5f84\u901a\u5e38\u4f1a\u5728\u591a\u4e2a\u533a\u57df\u67a2\u7ebd\u4e4b\u95f4\u201c\u6253\u86c7\u5f62\u201d\uff0c\u624d\u6700\u7ec8\u843d\u5230\u7f8e\u56fd\u5165\u53e3\uff0c\u81ea\u7136\u4f1a\u6d88\u8017\u66f4\u591a\u7684\u539f\u59cb\u8df3\u6570\u4f59\u91cf\u3002 \u6e05\u6d17\u4e2d\u5fc3\u548c\u9632\u62a4\u4e91\u4f1a\u5728\u4f60\u7684\u94fe\u8def\u4e0a\u9644\u52a0\u66f4\u591a\u7f51\u7edc\u8bbe\u5907\uff0c\u672c\u8d28\u4e0a\u589e\u52a0\u4e86 TTL \u9012\u51cf\u7684\u8282\u70b9\u6570\u91cf\u3002 \u7b56\u7565\u53d8\u66f4\uff08\u4f8b\u5982\u5728\u975e\u9ad8\u5cf0\u65f6\u6bb5\u504f\u597d\u66f4\u4fbf\u5b9c\u7684 Transit\uff09\u4f1a\u628a\u6d41\u91cf\u63a8\u5411\u66f4\u957f\u7684\u8def\u5f84\u5e8f\u5217\uff0c\u5373\u4fbf\u4f60\u81ea\u5df1\u7684\u6838\u5fc3\u914d\u7f6e\u4ece\u672a\u88ab\u6539\u52a8\u3002 \u4ece\u6027\u80fd\u89d2\u5ea6\u770b\uff0c\u8fd9\u7c7b\u573a\u666f\u901a\u5e38\u8868\u73b0\u4e3a\uff1a\u5ef6\u8fdf\u6e29\u548c\u4e0a\u5347\u3001traceroute \u8f93\u51fa\u4e2d\u6e05\u6670\u53ef\u89c1\u65b0\u589e\u8282\u70b9\uff0c\u540c\u65f6\u5269\u4f59\u8df3\u6570\u4e0e\u201c\u53d8\u957f\u540e\u7684\u8ddd\u79bb\u201d\u76f8\u5339\u914d\u3002\u8fd9\u4e9b\u8ff9\u8c61\u90fd\u4e0d\u80fd\u8bc1\u660e\u6709\u6076\u610f\u884c\u4e3a\u5728\u89e6\u78b0\u4f60\u7684\u6d41\u91cf\uff1b\u5b83\u4eec\u5f80\u5f80\u53ea\u662f\u66b4\u9732\u4e86\u4e0a\u6e38\u5728\u4f18\u5316\u6210\u672c\u4e0e\u6027\u80fd\u65f6\u505a\u51fa\u7684\u6743\u8861\u3002 \u7ea2\u8272\u4fe1\u53f7\uff1a\u503c\u5f97\u505a\u6df1\u5ea6\u53d6\u8bc1\u7684\u6a21\u5f0f \u771f\u6b63\u8ba9\u5de5\u7a0b\u5e08\u63d0\u9ad8\u8b66\u60d5\u7684\uff0c\u662f\u8df3\u6570\u53d8\u5316\u4e0e\u5176\u4ed6\u5f02\u5e38\u73b0\u8c61\u201c\u540c\u9891\u5171\u632f\u201d\u7684\u65f6\u5019\u3002\u5355\u7eaf\u7a81\u7136\u4e0b\u964d\u53ea\u662f\u6570\u636e\u70b9\uff1b\u800c\u5982\u679c\u9aa4\u964d\u540c\u65f6\u4f34\u968f\u7740\u5730\u7406\u4f4d\u7f6e\u4e0d\u5339\u914d\u3001\u8bc1\u4e66\u5f02\u5e38\u4ee5\u53ca\u964c\u751f\u4e2d\u95f4\u7f51\u7edc\uff0c\u90a3\u6545\u4e8b\u7684\u6027\u8d28\u5c31\u5b8c\u5168\u4e0d\u540c\u4e86\u3002\u8981\u8ba9\u4f60\u7684\u68c0\u6d4b\u6d41\u7a0b\u4fdd\u6301\u201c\u950b\u5229\u201d\uff0c\u4e0d\u59a8\u5217\u4e00\u4efd\u7b80\u77ed\u7684\u53ef\u89c2\u6d4b\u5f02\u5e38\u6e05\u5355\u3002 IP \u6f02\u79fb\uff1a\u539f\u672c\u5e94\u8be5\u843d\u5728\u67d0\u4e2a\u7279\u5b9a\u7f8e\u56fd\u5730\u5740\u4e0a\u7684\u5b8c\u6574\u57df\u540d\u89e3\u6790\uff0c\u7a81\u7136\u6307\u5411\u4e00\u5bb6\u4f60\u610f\u6599\u4e4b\u5916\u7684\u670d\u52a1\u5546\u3001\u56fd\u5bb6\u6216\u7ec4\u7ec7\u6240\u6301\u6709\u7684\u7ec8\u7aef\u3002 \u8def\u5f84\u91cd\u6784\uff1atraceroute \u73b0\u5728\u7a7f\u8d8a\u4e86\u4e00\u6279\u4f60\u4ece\u672a\u76f4\u63a5\u5bf9\u7b49\u8fc7\u7684\u81ea\u6cbb\u7cfb\u7edf\uff0c\u5c24\u5176\u662f\u90a3\u4e9b\u4ece\u201c\u4e3b\u6743\u7ba1\u8f96\u201d\u89d2\u5ea6\u770b\uff0c\u4e0d\u5e94\u51fa\u73b0\u5728\u901a\u5f80\u4f60\u670d\u52a1\u5668\u79df\u7528\u6216\u670d\u52a1\u5668\u6258\u7ba1\u673a\u623f\u8def\u5f84\u4e0a\u7684\u5730\u533a\u6216\u7f51\u7edc\u3002 \u5b89\u5168\u4fe1\u53f7\uff1a\u6d4f\u89c8\u5668\u51fa\u73b0 TLS \u544a\u8b66\uff0c\u8bc1\u4e66\u94fe\u4e0e\u9884\u671f\u7684\u7b7e\u53d1\u4f53\u7cfb\u5bf9\u4e0d\u4e0a\u53f7\uff0c\u6216\u8005 HTTP \u54cd\u5e94\u4e2d\u51fa\u73b0\u6ce8\u5165\u811a\u672c\u548c\u5e7f\u544a iframe\u3002 \u884c\u4e3a\u7a81\u53d8\uff1a\u7528\u6237\u62b1\u6028\u88ab\u91cd\u5b9a\u5411\u3001\u9047\u5230\u4eff\u5192\u767b\u5f55\u9875\uff0c\u6216\u5185\u5bb9\u4e0e\u9884\u671f\u4e0d\u7b26\uff0c\u5373\u4fbf\u8868\u9762\u4e0a DNS \u914d\u7f6e\u4e00\u5207\u6b63\u5e38\u3002 \u5982\u679c\u552f\u4e00\u53ef\u89c1\u7684\u53d8\u5316\u53ea\u662f\u5230\u8fbe\u65f6\u5269\u4f59\u7684 […]<\/p>\n

             Read More…<\/a><\/p>\n","protected":false},"author":2,"featured_media":35662,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4816],"tags":[14136,14137,14138],"class_list":["post-35665","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-america-dedicated-server-sc","tag-us-server-ttl","tag-network-detour","tag-hijack-detection"],"acf":[],"yoast_head":"\n