{"id":124,"date":"2022-05-18T09:29:35","date_gmt":"2022-05-18T01:29:35","guid":{"rendered":"https:\/\/superfreeboy.tech\/?p=124"},"modified":"2022-05-18T09:29:35","modified_gmt":"2022-05-18T01:29:35","slug":"%e4%b8%80%e4%b8%aab%e7%b1%bb%e5%9c%b0%e5%9d%80%ef%bc%8c%e5%ae%83%e7%9a%84%e5%ad%90%e7%bd%91%e6%8e%a9%e7%a0%81%e4%b8%ba255-255-224-0%ef%bc%8c%e8%83%bd%e5%88%92%e5%88%86%e5%a4%9a%e5%b0%91%e4%b8%aa","status":"publish","type":"post","link":"https:\/\/superfreeboy.tech\/index.php\/2022\/05\/18\/%e4%b8%80%e4%b8%aab%e7%b1%bb%e5%9c%b0%e5%9d%80%ef%bc%8c%e5%ae%83%e7%9a%84%e5%ad%90%e7%bd%91%e6%8e%a9%e7%a0%81%e4%b8%ba255-255-224-0%ef%bc%8c%e8%83%bd%e5%88%92%e5%88%86%e5%a4%9a%e5%b0%91%e4%b8%aa\/","title":{"rendered":"\u4e00\u4e2aB\u7c7b\u5730\u5740\uff0c\u5b83\u7684\u5b50\u7f51\u63a9\u7801\u4e3a255.255.224.0\uff0c\u80fd\u5212\u5206\u591a\u5c11\u4e2a\u5b50\u7f51"},"content":{"rendered":"\n<p>\u4e00\u4e2aB\u7c7b\u5730\u5740\uff0c\u5b83\u7684\u5b50\u7f51\u63a9\u7801\u4e3a255.255.224.0\uff0c\u80fd\u5212\u5206\u591a\u5c11\u4e2a\u5b50\u7f51? \u6bcf\u4e2a\u5b50\u7f51\u5bb9\u7eb3\u591a\u5c11\u53f0\u4e3b\u673a?<\/p>\n\n\n\n<p>255.255.224.0\u8f6c\u6210\u4e8c\u8fdb\u5236\u662f\uff1a<br>11111111.11111111.11100000.00000000<\/p>\n\n\n\n<p>\u4ece\u4e0a\u53ef\u4ee5\u770b\u51fa\u5b83\u5411\u4e3b\u673a\u4f4d\u501f\u4e86\u4e09\u4f4d\uff0c\u5b50\u7f51\u4e3a2\u76843\u6b21\u65b9\u7b49\u4e8e8\uff0c\u6240\u4ee5\u5b83\u67098\u4e2a\u5b50\u7f51\uff0c\u5206\u522b\u4e3a\uff1a000 001 010 011 100 101 110 111<br>\u51cf\u53bb\u9996\u5c3e\u5373\uff1a001-110 \u516d\u4e2a\u5b50\u7f51<\/p>\n\n\n\n<p>\u518d\u770b\u4e3b\u673a\u4f4d\uff0c\u51cf\u53bb\u5b50\u7f51\u5c3e\uff0c\u4e5f\u5c31\u662f2\u768413\u6b21\u65b9\u51cf\u53bb2 \u7b49\u4e8e8190 \u4e5f\u5c31\u662f\u6bcf\u4e2a\u5b50\u7f51\u53ef\u4ee5\u5bb9\u7eb38190\u53f0\u4e3b\u673a \u4e0a\u8ff0\u5b50\u7f51\u63a9\u7801\u5316\u6210\u4e8c\u8fdb\u5236\u5c31\u662f<br>11111111 11111111 11100000 00000000<br>\u5c31\u662f\u8bf4\u5411\u4e3b\u673a\u4f4d\u501f\u4e863\u4f4d<br>1.\u5b50\u7f51\u4e2a\u6570=\u628a\u501f\u7684\u4e3b\u673a\u4f4d\u4e2a\u6570\u505a\u4e3a2\u7684\u51e0\u6b21\u65b9\uff0c\u4e5f\u5c31\u662f2\u7684\u4e09\u6b21\u65b9=8\u4e2a\u5b50\u7f51\uff1a<br>2\uff0c\u6bcf\u4e2a\u5b50\u7f51\u5bb9\u7eb3\u7684\u4e3b\u673a\u6570=\u628a\u7f51\u7edc\u4f4d\uff080\u7684\u4f4d\u6570\uff09\u505a\u4e3a2\u7684\u51e0\u6b21\u65b9\u518d\u51cf\u53bb2=2\u768413\u6b21\u65b9-2=8190\u3002<\/p>\n\n\n\n<p>\u8fd9\u662f\u89c4\u7387\uff0c\u5982\u679c\u4e0d\u77e5\u9053\u539f\u56e0\u5c31\u5148\u8bb0\u89c4\u7387\uff0c\u4ee5\u540e\u4f1a\u660e\u767d\u7684\u3002 255.255.224.0\/19 \u8fd9\u4e2a19\u4ee3\u8868\u662f19\u4f4d16\u8fdb\u5236\u76841 \u7531\u4e8e\u662f\u4e00\u4e2aB\u7c7b\u7684\u5730\u5740\uff0c\u6240\u6709\u524d16\u4f4d\u662f\u7f51\u7edc\u4f4d\u3002\u800c\u540e16\u4f4d\u624d\u5305\u62ec\u5b50\u7f51\u4e3a\u548c\u4e3b\u673a\u4f4d\u3002<br>\u8981\u8bb0\u4f4f\u51e0\u4e2a\u516c\u5f0f<br>\u4e3b\u673a\u6570 \u662f2\u7684N\u6b21\u5e42-2 \u8fd9\u91cc\u7684N\u662f\u4ee3\u8868\u8fd916\u4f4d0\u7684\u4e2a\u6570\u3002<br>255.255.224.0 \u4ed6\u7684\u5341\u516d\u8fdb\u5236\u5c31\u662f11111111.11111111.11100000.00000000 \u540e\u9762\u76840\u7684\u6570\u91cf\u5c31\u662fN\uff0c\u4e5f\u5c31\u662f\u4e3b\u673a\u6570\u3002<br>\u6240\u4ee5\u8be5\u63a9\u7801\u7684\u4e3b\u673a\u6570\u662f2\u768413\u6b21\u5e42-2 \u7b49\u4e8e8192\u4e2a<\/p>\n\n\n\n<p>\u5b50\u7f51\u6570 \u540e16\u4f4d\u4e2d1\u4e2a\u4e2a\u6570\u5c31\u662f 2\u76843\u6b21\u5e42 8\u4e2a\u5b50\u7f51\u6570<\/p>\n\n\n\n<p>\u53ef\u7528\u7684\u5b50\u7f51\u53f7\u5206\u522b\u662f 0\uff0c32\uff0c64\uff0c96\uff0c128\uff0c160\uff0c192\uff0c224\u8fd9\u516b\u4e2a\u3002 \uff08\u662f\u7528256-224=32 \u7136\u540e\u4f9d\u6b21\u9012\u52a032 \u76f4\u5230224\uff09<\/p>\n\n\n\n<p>\u6240\u4ee5\u4ed6\u4eec\u7684\u53ef\u7528\u7684\u5b50\u7f51\u5730\u5740\u5c31\u662f172.16.0.0<br>172.16.32.0\u4ee5\u6b64\u7c7b\u63a8\u5230172.16.224.0\u8fd98\u4e2a\u3002<\/p>\n\n\n\n<p>\u6bcf\u4e2a\u5b50\u7f51\u53ef\u7528\u4e3b\u673a\u5730\u5740\u7684\u8303\u56f4\u662f172.16.0.1<del>~172.16.31.254 172.16.32.1<\/del>172.16.63.254\u4ee5\u6b64\u7c7b\u63a8\u76f4\u5230 172.16.192.1~172.16.223.254<br><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u4e2aB\u7c7b\u5730\u5740\uff0c\u5b83\u7684\u5b50\u7f51\u63a9\u7801\u4e3a255.255.224.0\uff0c\u80fd\u5212\u5206\u591a\u5c11\u4e2a\u5b50\u7f51? 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