{"id":157,"date":"2022-12-12T03:50:42","date_gmt":"2023-08-02T15:45:14","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/iptables%e9%98%b2%e7%81%ab%e5%a2%99%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86%e5%a6%82%e4%bd%95\/"},"modified":"2025-08-01T01:36:37","modified_gmt":"2025-07-31T17:36:37","slug":"iptables%e9%98%b2%e7%81%ab%e5%a2%99%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86%e5%a6%82%e4%bd%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/iptables%e9%98%b2%e7%81%ab%e5%a2%99%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86%e5%a6%82%e4%bd%95\/","title":{"rendered":"iptables\u9632\u706b\u5899\u6df1\u5ea6\u89e3\u6790\uff1a\u5de5\u4f5c\u539f\u7406\u3001\u89c4\u5219\u4e0e\u914d\u7f6e\u5165\u95e8"},"content":{"rendered":"<h3>\u4ecb\u7ecd<\/h3>\n<p>\u5728\u4fdd\u62a4\u4efb\u4f55\u73b0\u4ee3\u64cd\u4f5c\u7cfb\u7edf\u7684\u5b89\u5168\u8fc7\u7a0b\u4e2d\uff0c\u8bbe\u7f6e\u9632\u706b\u5899\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u4e00\u6b65\u3002\u5927\u591a\u6570Linux\u53d1\u884c\u7248\u90fd\u81ea\u5e26\u51e0\u79cd\u4e0d\u540c\u7684\u9632\u706b\u5899\u5de5\u5177\uff0c\u53ef\u7528\u4e8e\u914d\u7f6e\u9632\u706b\u5899\u3002\u5728\u672c\u6307\u5357\u4e2d\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecdiptables\u9632\u706b\u5899\u3002<\/p>\n<p>iptables\u662f\u5927\u591a\u6570Linux\u53d1\u884c\u7248\u9ed8\u8ba4\u5305\u542b\u7684\u6807\u51c6\u9632\u706b\u5899\u3002\u5b83\u662f\u4e0e\u5185\u6838\u7ea7\u522b\u7684netfilter\u94a9\u5b50\u8fdb\u884c\u4ea4\u4e92\u7684\u547d\u4ee4\u884c\u63a5\u53e3\uff0c\u53ef\u4ee5\u64cd\u4f5cLinux\u7f51\u7edc\u5806\u6808\u3002\u5b83\u901a\u8fc7\u5c06\u6bcf\u4e2a\u7a7f\u8fc7\u7f51\u7edc\u63a5\u53e3\u7684\u6570\u636e\u5305\u4e0e\u4e00\u7ec4\u89c4\u5219\u8fdb\u884c\u5339\u914d\uff0c\u51b3\u5b9a\u5982\u4f55\u5904\u7406\u3002<\/p>\n<p>\u5728\u672c\u6307\u5357\u4e2d\uff0c\u60a8\u5c06\u4e86\u89e3Iptables\u7684\u5de5\u4f5c\u539f\u7406\u3002\u5982\u679c\u60a8\u9700\u8981\u66f4\u6df1\u5165\u7684\u4e86\u89e3\uff0c\u53ef\u4ee5\u9605\u8bfb\u5173\u4e8eIptables\u548cNetfilter\u4f53\u7cfb\u7ed3\u6784\u7684\u6df1\u5165\u7814\u7a76\u3002<\/p>\n<h2>Iptables\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>\u9996\u5148\uff0c\u8ba9\u6211\u4eec\u56de\u987e\u4e00\u4e9b\u672f\u8bed\u5e76\u8ba8\u8bbaiptables\u7684\u5de5\u4f5c\u539f\u7406\u3002<\/p>\n<p>iptables \u9632\u706b\u5899\u901a\u8fc7\u5c06\u7f51\u7edc\u6d41\u91cf\u4e0e\u4e00\u7ec4\u89c4\u5219\u8fdb\u884c\u6bd4\u8f83\u6765\u8fd0\u884c\u3002\u8fd9\u4e9b\u89c4\u5219\u5b9a\u4e49\u4e86\u7f51\u7edc\u6570\u636e\u5305\u9700\u8981\u6ee1\u8db3\u7684\u7279\u5f81\u4ee5\u53ca\u5339\u914d\u6570\u636e\u5305\u5e94\u8be5\u91c7\u53d6\u7684\u64cd\u4f5c\u3002<\/p>\n<p>\u6709\u591a\u79cd\u9009\u9879\u53ef\u4ee5\u786e\u5b9a\u54ea\u4e9b\u6570\u636e\u5305\u7b26\u5408\u7279\u5b9a\u7684\u89c4\u5219\u3002\u60a8\u53ef\u4ee5\u5339\u914d\u6570\u636e\u5305\u7684\u534f\u8bae\u7c7b\u578b\u3001\u6e90\u5730\u5740\u6216\u76ee\u7684\u5730\u5740\u6216\u7aef\u53e3\u3001\u4f7f\u7528\u7684\u63a5\u53e3\uff0c\u4ee5\u53ca\u4e0e\u5148\u524d\u6570\u636e\u5305\u7684\u5173\u7cfb\u7b49\u7b49\u3002<\/p>\n<p>\u5f53\u5b9a\u4e49\u7684\u6a21\u5f0f\u5339\u914d\u65f6\uff0c\u6240\u53d1\u751f\u7684\u884c\u4e3a\u79f0\u4e3a\u76ee\u6807\u3002\u76ee\u6807\u53ef\u4ee5\u662f\u6570\u636e\u5305\u7684\u6700\u7ec8\u7b56\u7565\u51b3\u7b56\uff0c\u6bd4\u5982\u63a5\u53d7\u6216\u4e22\u5f03\u3002\u5b83\u4e5f\u53ef\u4ee5\u5c06\u6570\u636e\u5305\u79fb\u52a8\u5230\u4e0d\u540c\u7684\u94fe\u8fdb\u884c\u5904\u7406\uff0c\u6216\u8bb0\u5f55\u8be5\u8fc7\u7a0b\u3002\u6709\u5f88\u591a\u9009\u9879\u3002<\/p>\n<p>\u8fd9\u4e9b\u89c4\u5219\u88ab\u7ec4\u7ec7\u6210\u79f0\u4e3a\u94fe\u7684\u7fa4\u7ec4\u3002\u94fe\u662f\u4e00\u7cfb\u5217\u6309\u987a\u5e8f\u68c0\u67e5\u6570\u636e\u5305\u7684\u89c4\u5219\u96c6\u3002\u5f53\u6570\u636e\u5305\u4e0e\u67d0\u4e2a\u89c4\u5219\u5339\u914d\u65f6\uff0c\u5b83\u6267\u884c\u76f8\u5173\u7684\u64cd\u4f5c\u5e76\u8df3\u8fc7\u94fe\u4e2d\u5269\u4f59\u7684\u89c4\u5219\u3002<\/p>\n<p>\u7528\u6237\u53ef\u4ee5\u6839\u636e\u9700\u8981\u521b\u5efa\u94fe\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u5b9a\u4e49\u4e86\u4e09\u4e2a\u94fe\uff0c\u5b83\u4eec\u662f\uff1a<\/p>\n<ul class=\"post-ul\">\n<li><strong>INPUT\uff08\u8f93\u5165\uff09<\/strong>: \u6b64\u94fe\u5904\u7406\u6240\u6709\u53d1\u5f80\u60a8\u670d\u52a1\u5668\u7684\u6570\u636e\u5305\u3002<\/li>\n<li><strong>OUTPUT\uff08\u8f93\u51fa\uff09<\/strong>: \u6b64\u94fe\u5305\u542b\u7531\u60a8\u670d\u52a1\u5668\u521b\u5efa\u7684\u6d41\u91cf\u89c4\u5219\u3002<\/li>\n<li><strong>FORWARD\uff08\u8f6c\u53d1\uff09<\/strong>: \u6b64\u94fe\u7528\u4e8e\u5904\u7406\u76ee\u7684\u5730\u662f\u5176\u4ed6\u670d\u52a1\u5668\u800c\u975e\u7531\u60a8\u670d\u52a1\u5668\u521b\u5efa\u7684\u6d41\u91cf\u3002\u6b64\u94fe\u662f\u4e00\u79cd\u5c06\u60a8\u7684\u670d\u52a1\u5668\u914d\u7f6e\u4e3a\u8def\u7531\u8bf7\u6c42\u5230\u5176\u4ed6\u673a\u5668\u7684\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n<p>\u6bcf\u4e2a\u94fe\u53ef\u4ee5\u5305\u542b\u96f6\u4e2a\u6216\u591a\u4e2a\u89c4\u5219\uff0c\u5e76\u4e14\u90fd\u6709\u4e00\u4e2a\u9ed8\u8ba4\u7b56\u7565\u3002\u7b56\u7565\u51b3\u5b9a\u4e86\u5f53\u6570\u636e\u5305\u901a\u8fc7\u94fe\u4e2d\u7684\u6240\u6709\u89c4\u5219\u5e76\u4e14\u4e0e\u4efb\u4f55\u89c4\u5219\u90fd\u4e0d\u5339\u914d\u65f6\u4f1a\u53d1\u751f\u4ec0\u4e48\u3002\u60a8\u53ef\u4ee5\u9009\u62e9\u4e22\u5f03\u6216\u63a5\u53d7\u6570\u636e\u5305\uff0c\u5982\u679c\u6ca1\u6709\u89c4\u5219\u5339\u914d\u7684\u8bdd\u3002<\/p>\n<p>iptables\u4e5f\u53ef\u4ee5\u8ddf\u8e2a\u8fde\u63a5\u3002\u8fd9\u610f\u5473\u7740\u60a8\u53ef\u4ee5\u521b\u5efa\u89c4\u5219\uff0c\u6839\u636e\u6570\u636e\u5305\u4e0e\u5148\u524d\u6570\u636e\u5305\u7684\u5173\u7cfb\u6765\u5b9a\u4e49\u5176\u53d1\u751f\u7684\u60c5\u51b5\u3002\u8fd9\u79cd\u80fd\u529b\u88ab\u79f0\u4e3a\u201c\u72b6\u6001\u8ddf\u8e2a\u201d\u3001\u201c\u8fde\u63a5\u8ddf\u8e2a\u201d\u6216\u914d\u7f6e\u201c\u72b6\u6001\u673a\u201d\u3002<\/p>\n<h3>IPv4\u4e0eIPv6\u5bf9\u6bd4<\/h3>\n<p>Linux\u5185\u6838\u4e2d\u5305\u542b\u7684netfilter\u9632\u706b\u5899\u5c06IPv4\u548cIPv6\u6d41\u91cf\u5b8c\u5168\u5206\u5f00\u3002\u7528\u4e8e\u64cd\u4f5c\u5305\u542b\u9632\u706b\u5899\u89c4\u5219\u96c6\u7684iptables\u5de5\u5177\u4e5f\u662f\u4e0d\u540c\u7684\u3002\u5982\u679c\u60a8\u7684\u670d\u52a1\u5668\u542f\u7528\u4e86IPv6\uff0c\u60a8\u9700\u8981\u540c\u65f6\u914d\u7f6e\u4e24\u4e2a\u8868\u6765\u5904\u7406\u670d\u52a1\u5668\u4e0a\u7684\u6d41\u91cf\u3002<\/p>\n<div class=\"post-conf-note\">\n<p 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