{"id":479133,"date":"2023-08-09T10:01:33","date_gmt":"2023-08-09T10:01:33","guid":{"rendered":""},"modified":"2023-09-05T11:18:14","modified_gmt":"2023-09-05T11:18:14","slug":"stateful-inspection","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/cn\/wiki\/stateful-inspection\/","title":{"rendered":"\u72b6\u6001\u68c0\u67e5"},"content":{"rendered":"

\u72b6\u6001\u68c0\u6d4b\u4e5f\u79f0\u4e3a\u52a8\u6001\u5305\u8fc7\u6ee4\uff0c\u662f\u4e00\u79cd\u901a\u8fc7\u5728\u5e94\u7528\u5c42\u76d1\u89c6\u548c\u7ba1\u7406\u6570\u636e\u5305\u6d41\u5411\u6765\u589e\u5f3a\u7f51\u7edc\u5b89\u5168\u7684\u9632\u706b\u5899\u6280\u672f\u3002\u4e0e\u4ec5\u68c0\u67e5\u5355\u4e2a\u6570\u636e\u5305\u7684\u4f20\u7edf\u6570\u636e\u5305\u8fc7\u6ee4\u4e0d\u540c\uff0c\u72b6\u6001\u68c0\u67e5\u7ef4\u62a4\u6bcf\u4e2a\u8fde\u63a5\u7684\u4e0a\u4e0b\u6587\uff0c\u4f7f\u5176\u80fd\u591f\u5c31\u6570\u636e\u5305\u8fc7\u6ee4\u548c\u8bbf\u95ee\u63a7\u5236\u505a\u51fa\u66f4\u660e\u667a\u7684\u51b3\u7b56\u3002<\/p>\n

\u72b6\u6001\u68c0\u67e5\u662f\u73b0\u4ee3\u7f51\u7edc\u5b89\u5168\u7b56\u7565\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u5728\u786e\u4fdd\u7f51\u7edc\u4f20\u8f93\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u673a\u5bc6\u6027\u65b9\u9762\u53d1\u6325\u7740\u91cd\u8981\u4f5c\u7528\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u63a2\u8ba8\u72b6\u6001\u68c0\u67e5\u7684\u5386\u53f2\u3001\u5de5\u4f5c\u539f\u7406\u3001\u7c7b\u578b\u548c\u672a\u6765\u524d\u666f\uff0c\u4ee5\u53ca\u5b83\u4e0e\u4ee3\u7406\u670d\u52a1\u5668\u7684\u5173\u8054\u3002<\/p>\n

\u56fd\u5bb6\u68c0\u67e5\u7684\u8d77\u6e90\u548c\u9996\u6b21\u63d0\u53ca\u7684\u5386\u53f2<\/h2>\n

\u72b6\u6001\u68c0\u67e5\u7684\u6982\u5ff5\u51fa\u73b0\u4e8e 20 \u4e16\u7eaa 80 \u5e74\u4ee3\u672b\uff0c\u4f5c\u4e3a\u5bf9\u65e9\u671f\u9632\u706b\u5899\u6280\u672f\u5c40\u9650\u6027\u7684\u56de\u5e94\u3002\u65e9\u671f\u7684\u9632\u706b\u5899\u4e3b\u8981\u4f9d\u8d56\u4e8e\u6570\u636e\u5305\u8fc7\u6ee4\uff0c\u5b83\u6839\u636e\u9884\u5b9a\u4e49\u7684\u89c4\u5219\u8bc4\u4f30\u5404\u4e2a\u6570\u636e\u5305\u3002\u7136\u800c\uff0c\u8fd9\u4e9b\u9632\u706b\u5899\u7f3a\u4e4f\u8ddf\u8e2a\u7f51\u7edc\u8fde\u63a5\u72b6\u6001\u7684\u80fd\u529b\uff0c\u4f7f\u5f97\u5b83\u4eec\u5bb9\u6613\u53d7\u5230\u67d0\u4e9b\u7c7b\u578b\u7684\u653b\u51fb\u3002<\/p>\n

\u9996\u6b21\u63d0\u5230\u72b6\u6001\u68c0\u67e5\u53ef\u4ee5\u8ffd\u6eaf\u5230 William R. Cheswick \u548c Steven M. Bellovin \u5728 1994 \u5e74\u51fa\u7248\u7684\u4e66\u300a\u9632\u706b\u5899\u548c\u4e92\u8054\u7f51\u5b89\u5168\uff1a\u51fb\u9000\u72e1\u733e\u7684\u9ed1\u5ba2\u300b\u4e2d\u3002\u5728\u4e66\u4e2d\uff0c\u4ed6\u4eec\u4ecb\u7ecd\u4e86\u4f7f\u7528\u72b6\u6001\u4fe1\u606f\u6765\u589e\u5f3a\u9632\u706b\u5899\u5b89\u5168\u6027\u7684\u60f3\u6cd5\u3002\u72b6\u6001\u68c0\u67e5\u8fc5\u901f\u6d41\u884c\u8d77\u6765\uff0c\u5e76\u6210\u4e3a\u73b0\u4ee3\u9632\u706b\u5899\u5b9e\u73b0\u4e2d\u7684\u4e00\u9879\u57fa\u672c\u6280\u672f\u3002<\/p>\n

\u6709\u5173\u72b6\u6001\u68c0\u67e5\u7684\u8be6\u7ec6\u4fe1\u606f<\/h2>\n

\u72b6\u6001\u68c0\u67e5\u7684\u5185\u90e8\u7ed3\u6784\uff1a\u5b83\u662f\u5982\u4f55\u5de5\u4f5c\u7684<\/h3>\n

\u72b6\u6001\u68c0\u67e5\u5728 OSI\uff08\u5f00\u653e\u7cfb\u7edf\u4e92\u8fde\uff09\u6a21\u578b\u7684\u5e94\u7528\u7a0b\u5e8f\u5c42\u8fd0\u884c\uff0c\u4f7f\u5176\u80fd\u591f\u6267\u884c\u6df1\u5ea6\u6570\u636e\u5305\u68c0\u67e5\u5e76\u4fdd\u7559\u6709\u5173\u6d3b\u52a8\u8fde\u63a5\u7684\u4fe1\u606f\u3002\u72b6\u6001\u68c0\u67e5\u7684\u5173\u952e\u7ec4\u6210\u90e8\u5206\u5982\u4e0b\uff1a<\/p>\n

    \n
  1. \n

    \u72b6\u6001\u8868<\/strong>\uff1a\u72b6\u6001\u8868\u4e5f\u79f0\u4e3a\u8fde\u63a5\u8868\uff0c\u7ef4\u62a4\u7740\u6240\u6709\u7ecf\u8fc7\u9632\u706b\u5899\u7684\u6d3b\u52a8\u7f51\u7edc\u8fde\u63a5\u7684\u8bb0\u5f55\u3002\u8868\u4e2d\u7684\u6bcf\u4e2a\u6761\u76ee\u5305\u542b\u8bf8\u5982\u6e90\u548c\u76ee\u7684\u5730IP\u5730\u5740\u3001\u7aef\u53e3\u53f7\u3001\u8fde\u63a5\u72b6\u6001\uff08\u4f8b\u5982\uff0c\u5df2\u5efa\u7acb\u3001\u65b0\u7684\u6216\u5173\u95ed\uff09\u4ee5\u53ca\u5176\u4ed6\u76f8\u5173\u6570\u636e\u7b49\u4fe1\u606f\u3002<\/p>\n<\/li>\n

  2. \n

    \u72b6\u6001\u5339\u914d<\/strong>\uff1a\u5f53\u6570\u636e\u5305\u7a7f\u8fc7\u9632\u706b\u5899\u65f6\uff0c\u72b6\u6001\u68c0\u67e5\u4f1a\u5c06\u5176\u6807\u5934\u4fe1\u606f\u4e0e\u72b6\u6001\u8868\u4e2d\u7684\u6761\u76ee\u8fdb\u884c\u6bd4\u8f83\u3002\u5982\u679c\u6570\u636e\u5305\u5bf9\u5e94\u4e8e\u73b0\u6709\u8fde\u63a5\uff0c\u5219\u5141\u8bb8\u5176\u901a\u8fc7\u3002\u5426\u5219\uff0c\u9632\u706b\u5899\u5c06\u6839\u636e\u5176\u89c4\u5219\u96c6\u8bc4\u4f30\u6570\u636e\u5305\uff0c\u4ee5\u786e\u5b9a\u662f\u5426\u5e94\u5728\u72b6\u6001\u8868\u4e2d\u4e3a\u8fde\u63a5\u5efa\u7acb\u65b0\u6761\u76ee\u3002<\/p>\n<\/li>\n

  3. \n

    \u8fde\u63a5\u8ffd\u8e2a<\/strong>\uff1a\u72b6\u6001\u68c0\u67e5\u6301\u7eed\u76d1\u89c6\u72b6\u6001\u8868\u4ee5\u8ddf\u8e2a\u6d3b\u52a8\u8fde\u63a5\u7684\u8fdb\u5ea6\u3002\u8fd9\u79cd\u8ddf\u8e2a\u5141\u8bb8\u9632\u706b\u5899\u5904\u7406\u5404\u79cd\u7f51\u7edc\u534f\u8bae\u5e76\u7ef4\u62a4\u8fde\u63a5\u72b6\u6001\uff0c\u5373\u4f7f\u6d89\u53ca\u591a\u4e2a\u6570\u636e\u5305\u4e5f\u662f\u5982\u6b64\u3002<\/p>\n<\/li>\n

  4. \n

    \u4f1a\u8bdd\u610f\u8bc6<\/strong>\uff1a\u4e0e\u72ec\u7acb\u5904\u7406\u6bcf\u4e2a\u6570\u636e\u5305\u7684\u65e0\u72b6\u6001\u9632\u706b\u5899\u4e0d\u540c\uff0c\u72b6\u6001\u68c0\u67e5\u53ef\u4ee5\u4fdd\u6301\u5bf9\u6b63\u5728\u8fdb\u884c\u7684\u4f1a\u8bdd\u7684\u611f\u77e5\uff0c\u786e\u4fdd\u5c5e\u4e8e\u540c\u4e00\u8fde\u63a5\u7684\u6570\u636e\u5305\u5f97\u5230\u4e00\u81f4\u7684\u5904\u7406\u3002<\/p>\n<\/li>\n<\/ol>\n

    \u72b6\u6001\u68c0\u67e5\u7684\u5173\u952e\u7279\u5f81\u5206\u6790<\/h2>\n

    \u72b6\u6001\u68c0\u67e5\u63d0\u4f9b\u4e86\u51e0\u4e2a\u5173\u952e\u529f\u80fd\uff0c\u4f7f\u5176\u6210\u4e3a\u7f51\u7edc\u5b89\u5168\u7684\u5f3a\u5927\u5de5\u5177\uff1a<\/p>\n

      \n
    1. \n

      \u4e0a\u4e0b\u6587\u6570\u636e\u5305\u8fc7\u6ee4<\/strong>\uff1a\u901a\u8fc7\u7ef4\u62a4\u8fde\u63a5\u72b6\u6001\u4fe1\u606f\uff0c\u72b6\u6001\u68c0\u67e5\u53ef\u4ee5\u5728\u5173\u8054\u4f1a\u8bdd\u7684\u4e0a\u4e0b\u6587\u4e2d\u5206\u6790\u6570\u636e\u5305\uff0c\u4ece\u800c\u63d0\u4f9b\u66f4\u7ec6\u81f4\u7684\u8fc7\u6ee4\u548c\u8bbf\u95ee\u63a7\u5236\u65b9\u6cd5\u3002<\/p>\n<\/li>\n

    2. \n

      \u63d0\u9ad8\u5b89\u5168\u6027<\/strong>\uff1a\u8ddf\u8e2a\u6d3b\u52a8\u8fde\u63a5\u5e76\u8be6\u7ec6\u5206\u6790\u6570\u636e\u5305\u5185\u5bb9\u7684\u80fd\u529b\u5141\u8bb8\u72b6\u6001\u68c0\u67e5\u6765\u68c0\u6d4b\u548c\u9632\u6b62\u67d0\u4e9b\u590d\u6742\u7684\u653b\u51fb\uff0c\u4f8b\u5982\u4f1a\u8bdd\u52ab\u6301\u548c\u79d8\u5bc6\u626b\u63cf\u3002<\/p>\n<\/li>\n

    3. \n

      \u6613\u4e8e\u914d\u7f6e<\/strong>\uff1a\u4e0e\u5176\u4ed6\u9632\u706b\u5899\u7c7b\u578b\u76f8\u6bd4\uff0c\u72b6\u6001\u68c0\u67e5\u9632\u706b\u5899\u901a\u5e38\u66f4\u5bb9\u6613\u914d\u7f6e\u548c\u7ba1\u7406\uff0c\u56e0\u4e3a\u5b83\u4eec\u80fd\u591f\u611f\u77e5\u6b63\u5728\u8fdb\u884c\u7684\u8fde\u63a5\uff0c\u56e0\u6b64\u9700\u8981\u66f4\u5c11\u7684\u663e\u5f0f\u89c4\u5219\u3002<\/p>\n<\/li>\n

    4. \n

      \u9ad8\u6027\u80fd<\/strong>\uff1a\u5c3d\u7ba1\u8fdb\u884c\u4e86\u66f4\u6df1\u5165\u7684\u5206\u6790\uff0c\u72b6\u6001\u68c0\u67e5\u4ecd\u7136\u53ef\u4ee5\u5b9e\u73b0\u9ad8\u541e\u5410\u91cf\uff0c\u56e0\u4e3a\u5b83\u4ec5\u68c0\u67e5\u4e0e\u6d3b\u52a8\u8fde\u63a5\u76f8\u5173\u7684\u6570\u636e\u5305\uff0c\u800c\u4e0d\u662f\u8bc4\u4f30\u6240\u6709\u4f20\u5165\u6570\u636e\u5305\u3002<\/p>\n<\/li>\n

    5. \n

      \u5e94\u7528\u5c42\u68c0\u67e5<\/strong>\uff1a\u72b6\u6001\u68c0\u67e5\u53ef\u4ee5\u5bf9\u5e94\u7528\u5c42\u6570\u636e\u8fdb\u884c\u6df1\u5165\u68c0\u67e5\uff0c\u4f7f\u5176\u80fd\u591f\u6839\u636e\u7279\u5b9a\u7684\u5e94\u7528\u534f\u8bae\u5b9e\u65bd\u66f4\u7ec6\u7c92\u5ea6\u7684\u5b89\u5168\u7b56\u7565\u3002<\/p>\n<\/li>\n

    6. \n

      \u7f51\u7edc\u6d41\u91cf\u7684\u72b6\u6001\u8ddf\u8e2a<\/strong>\uff1a\u901a\u8fc7\u8ddf\u8e2a\u8fde\u63a5\u72b6\u6001\uff0c\u72b6\u6001\u68c0\u67e5\u53ef\u4ee5\u63d0\u4f9b\u5bf9\u7f51\u7edc\u6d41\u91cf\u6a21\u5f0f\u7684\u5b9d\u8d35\u89c1\u89e3\uff0c\u6709\u52a9\u4e8e\u6545\u969c\u6392\u9664\u548c\u7f51\u7edc\u4f18\u5316\u3002<\/p>\n<\/li>\n<\/ol>\n

      \u72b6\u6001\u68c0\u67e5\u7684\u7c7b\u578b<\/h2>\n

      \u6839\u636e\u6570\u636e\u5305\u5206\u6790\u7684\u7ea7\u522b\uff0c\u72b6\u6001\u68c0\u67e5\u53ef\u4ee5\u5206\u4e3a\u4e24\u79cd\u4e3b\u8981\u7c7b\u578b\uff1a<\/p>\n

        \n
      1. \n

        \u57fa\u672c\u72b6\u6001\u68c0\u67e5<\/strong>\uff1a\u6b64\u7c7b\u578b\u91cd\u70b9\u8ddf\u8e2a TCP \u548c UDP \u8fde\u63a5\u7684\u72b6\u6001\u3002\u5b83\u53ef\u4ee5\u76d1\u89c6\u5df2\u5efa\u7acb\u8fde\u63a5\u7684\u72b6\u6001\u5e76\u786e\u4fdd\u5c5e\u4e8e\u8fd9\u4e9b\u8fde\u63a5\u7684\u6570\u636e\u5305\u88ab\u5141\u8bb8\u901a\u8fc7\u9632\u706b\u5899\u3002<\/p>\n<\/li>\n

      2. \n

        \u6df1\u5ea6\u6570\u636e\u5305\u68c0\u6d4b (DPI)<\/strong>\uff1aDPI \u901a\u8fc7\u5206\u6790\u6807\u5934\u4fe1\u606f\u4e4b\u5916\u7684\u6570\u636e\u5305\u5185\u5bb9\uff0c\u8fdb\u4e00\u6b65\u8fdb\u884c\u72b6\u6001\u68c0\u67e5\u3002\u5b83\u53ef\u4ee5\u68c0\u6d4b\u7279\u5b9a\u4e8e\u5e94\u7528\u7a0b\u5e8f\u7684\u6a21\u5f0f\u548c\u5f02\u5e38\uff0c\u4ece\u800c\u5b9e\u73b0\u66f4\u590d\u6742\u7684\u8fc7\u6ee4\u548c\u5165\u4fb5\u68c0\u6d4b\u529f\u80fd\u3002<\/p>\n<\/li>\n<\/ol>\n

        \u8ba9\u6211\u4eec\u5728\u8868\u683c\u4e2d\u6bd4\u8f83\u8fd9\u4e24\u79cd\u7c7b\u578b\uff1a<\/p>\n\n\n\n\n\n\n\n\n\n
        \u7279\u5f81<\/th>\n\u57fa\u672c\u72b6\u6001\u68c0\u67e5<\/th>\n\u6df1\u5ea6\u6570\u636e\u5305\u68c0\u6d4b (DPI)<\/th>\n<\/tr>\n<\/thead>\n
        \u6570\u636e\u5305\u5206\u6790\u7ea7\u522b<\/td>\n\u6807\u5934\u4fe1\u606f (TCP\/UDP)<\/td>\n\u6807\u9898\u548c\u5185\u5bb9\uff08\u5e94\u7528\u5c42\uff09<\/td>\n<\/tr>\n
        \u8fc7\u6ee4\u590d\u6742\u5ea6<\/td>\n\u4ec5\u9650\u4e8e\u8fde\u63a5\u72b6\u6001\u8ddf\u8e2a<\/td>\n\u57fa\u4e8e\u5e94\u7528\u7a0b\u5e8f\u6570\u636e\u7684\u9ad8\u7ea7\u8fc7\u6ee4<\/td>\n<\/tr>\n
        \u5165\u4fb5\u68c0\u6d4b<\/td>\n\u80fd\u529b\u6709\u9650<\/td>\n\u589e\u5f3a\u7684\u5165\u4fb5\u68c0\u6d4b\u548c\u9884\u9632<\/td>\n<\/tr>\n
        \u6027\u80fd\u5f71\u54cd<\/td>\n\u6700\u5c0f\uff0c\u9002\u5408\u9ad8\u901a\u91cf<\/td>\n\u7531\u4e8e\u5185\u5bb9\u5206\u6790\u800c\u589e\u52a0\u4e86\u5904\u7406\u91cf<\/td>\n<\/tr>\n
        \u5e94\u7528\u610f\u8bc6<\/td>\n\u4ec5\u9650\u4e8e\u57fa\u672c\u534f\u8bae\uff08TCP\/UDP\uff09<\/td>\n\u5bf9\u5e94\u7528\u7a0b\u5e8f\u6570\u636e\u7684\u7cbe\u7ec6\u7406\u89e3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \u72b6\u6001\u68c0\u67e5\u7684\u4f7f\u7528\u65b9\u6cd5\u3001\u4f7f\u7528\u8fc7\u7a0b\u4e2d\u9047\u5230\u7684\u95ee\u9898\u53ca\u89e3\u51b3\u65b9\u6848<\/h2>\n

        \u72b6\u6001\u68c0\u67e5\u662f\u4e00\u79cd\u7528\u4e8e\u5404\u79cd\u7f51\u7edc\u5b89\u5168\u573a\u666f\u7684\u901a\u7528\u6280\u672f\u3002\u4e00\u4e9b\u5e38\u89c1\u7684\u7528\u4f8b\u5305\u62ec\uff1a<\/p>\n

          \n
        1. \n

          \u9632\u706b\u5899\u4fdd\u62a4<\/strong>\uff1a\u72b6\u6001\u68c0\u67e5\u662f\u73b0\u4ee3\u9632\u706b\u5899\u7684\u652f\u67f1\uff0c\u63d0\u4f9b\u9488\u5bf9\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u548c\u6076\u610f\u6d41\u91cf\u7684\u5173\u952e\u4fdd\u62a4\u3002<\/p>\n<\/li>\n

        2. \n

          \u7f51\u7edc\u5730\u5740\u8f6c\u6362 (NAT)<\/strong>\uff1a\u72b6\u6001\u68c0\u6d4b\u9632\u706b\u5899\u53ef\u7528\u4e8e\u7f51\u7edc\u5730\u5740\u8f6c\u6362\uff0c\u5141\u8bb8\u4e13\u7528\u7f51\u7edc\u4e2d\u7684\u591a\u4e2a\u8bbe\u5907\u5171\u4eab\u5355\u4e2a\u516c\u5171 IP \u5730\u5740\u3002<\/p>\n<\/li>\n

        3. \n

          \u865a\u62df\u4e13\u7528\u7f51\u7edc (VPN)<\/strong>\uff1a\u72b6\u6001\u68c0\u6d4b\u53ef\u5e94\u7528\u4e8e VPN \u7f51\u5173\uff0c\u4ee5\u5728\u8fdc\u7a0b\u7528\u6237\u6216\u5206\u652f\u673a\u6784\u4e4b\u95f4\u5efa\u7acb\u5b89\u5168\u8fde\u63a5\u3002<\/p>\n<\/li>\n

        4. \n

          \u5165\u4fb5\u68c0\u6d4b\u548c\u9884\u9632\u7cfb\u7edf (IDPS)<\/strong>\uff1aDPI \u589e\u5f3a\u7684\u72b6\u6001\u68c0\u67e5\u5728\u8bc6\u522b\u548c\u51cf\u8f7b\u7f51\u7edc\u5165\u4fb5\u548c\u653b\u51fb\u65b9\u9762\u53d1\u6325\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002<\/p>\n<\/li>\n<\/ol>\n

          \u72b6\u6001\u68c0\u67e5\u76f8\u5173\u7684\u6311\u6218\u548c\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n

            \n
          1. \n

            \u72b6\u6001\u8868\u5927\u5c0f<\/strong>\uff1a\u72b6\u6001\u8868\u5728\u9ad8\u6d41\u91cf\u7f51\u7edc\u4e2d\u4f1a\u663e\u7740\u589e\u957f\uff0c\u6d88\u8017\u5185\u5b58\u8d44\u6e90\u3002\u6709\u6548\u7684\u8868\u7ba1\u7406\u548c\u975e\u6d3b\u52a8\u8fde\u63a5\u8d85\u65f6\u5bf9\u4e8e\u89e3\u51b3\u6b64\u95ee\u9898\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<\/li>\n

          2. \n

            \u8d44\u6e90\u6d88\u8017<\/strong>\uff1aDPI \u53ef\u80fd\u4f1a\u5360\u7528\u5927\u91cf\u8d44\u6e90\uff0c\u4ece\u800c\u5bfc\u81f4\u6027\u80fd\u74f6\u9888\u3002\u786c\u4ef6\u52a0\u901f\u548c\u4f18\u5316\u6280\u672f\u53ef\u4ee5\u7f13\u89e3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<\/li>\n

          3. \n

            \u52a0\u5bc6\u6d41\u91cf<\/strong>\uff1aDPI \u5728\u68c0\u67e5\u52a0\u5bc6\u6d41\u91cf\u65f6\u53ef\u80fd\u9762\u4e34\u6311\u6218\uff0c\u56e0\u4e3a\u5185\u5bb9\u4e0d\u76f4\u63a5\u53ef\u89c1\u3002\u4e0e SSL\/TLS \u89e3\u5bc6\u6280\u672f\u5408\u4f5c\u53ef\u4ee5\u514b\u670d\u6b64\u9650\u5236\u3002<\/p>\n<\/li>\n

          4. \n

            \u89c4\u907f\u6280\u5de7<\/strong>\uff1a\u4e00\u4e9b\u653b\u51fb\u8005\u4f7f\u7528\u89c4\u907f\u6280\u672f\u6765\u7ed5\u8fc7\u72b6\u6001\u68c0\u67e5\u3002\u4e3a\u4e86\u9886\u5148\u4e8e\u65b0\u51fa\u73b0\u7684\u5a01\u80c1\uff0c\u9700\u8981\u5b9a\u671f\u66f4\u65b0\u9632\u706b\u5899\u89c4\u5219\u548c DPI \u7b7e\u540d\u3002<\/p>\n<\/li>\n<\/ol>\n

            \u4e3b\u8981\u7279\u70b9\u53ca\u4e0e\u540c\u7c7b\u672f\u8bed\u7684\u5176\u4ed6\u6bd4\u8f83<\/h2>\n

            \u8ba9\u6211\u4eec\u5c06\u72b6\u6001\u68c0\u67e5\u4e0e\u7c7b\u4f3c\u7684\u9632\u706b\u5899\u6280\u672f\u8fdb\u884c\u6bd4\u8f83\uff1a<\/p>\n\n\n\n\n\n\n\n\n
            \u7279\u5f81<\/th>\n\u72b6\u6001\u68c0\u67e5<\/th>\n\u65e0\u72b6\u6001\u5305\u8fc7\u6ee4<\/th>\n\u6df1\u5ea6\u6570\u636e\u5305\u68c0\u6d4b (DPI)<\/th>\n<\/tr>\n<\/thead>\n
            \u6570\u636e\u5305\u5206\u6790\u7ea7\u522b<\/td>\n\u6807\u9898\u548c\u5185\u5bb9\uff08\u5e94\u7528\u5c42\uff09<\/td>\n\u4ec5\u6807\u5934 (TCP\/UDP\/IP)<\/td>\n\u6807\u9898\u548c\u5185\u5bb9\uff08\u5e94\u7528\u5c42\uff09<\/td>\n<\/tr>\n
            \u56fd\u5bb6\u610f\u8bc6<\/td>\n\u662f\u7684<\/td>\n\u4e0d<\/td>\n\u662f\u7684<\/td>\n<\/tr>\n
            \u5165\u4fb5\u68c0\u6d4b\u80fd\u529b<\/td>\n\u7f13\u548c<\/td>\n\u6709\u9650\u7684<\/td>\n\u5148\u8fdb\u7684<\/td>\n<\/tr>\n
            \u5305\u8fc7\u6ee4\u7c92\u5ea6<\/td>\n\u9ad8\u7684<\/td>\n\u4f4e\u7684<\/td>\n\u9ad8\u7684<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            \u4e0e\u72b6\u6001\u68c0\u67e5\u76f8\u5173\u7684\u672a\u6765\u524d\u666f\u548c\u6280\u672f<\/h2>\n

            \u968f\u7740\u7f51\u7edc\u5b89\u5168\u7684\u4e0d\u65ad\u53d1\u5c55\uff0c\u72b6\u6001\u68c0\u67e5\u7684\u672a\u6765\u5145\u6ee1\u5e0c\u671b\u3002\u4e00\u4e9b\u5173\u952e\u89c2\u70b9\u548c\u6280\u672f\u5305\u62ec\uff1a<\/p>\n

              \n
            1. \n

              \u673a\u5668\u5b66\u4e60\u96c6\u6210<\/strong>\uff1a\u901a\u8fc7\u7ed3\u5408\u673a\u5668\u5b66\u4e60\u7b97\u6cd5\uff0c\u72b6\u6001\u68c0\u67e5\u53ef\u4ee5\u9002\u5e94\u65b0\u51fa\u73b0\u7684\u5a01\u80c1\uff0c\u589e\u5f3a\u5176\u5165\u4fb5\u68c0\u6d4b\u80fd\u529b\u3002<\/p>\n<\/li>\n

            2. \n

              5G\u7f51\u7edc\u5b89\u5168<\/strong>\uff1a5G\u6280\u672f\u7684\u91c7\u7528\u5c06\u9700\u8981\u66f4\u590d\u6742\u7684\u5b89\u5168\u63aa\u65bd\uff0c\u800cDPI\u72b6\u6001\u68c0\u6d4b\u5c06\u5728\u786e\u4fdd5G\u7f51\u7edc\u7684\u5b8c\u6574\u6027\u65b9\u9762\u53d1\u6325\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002<\/p>\n<\/li>\n

            3. \n

              \u7269\u8054\u7f51 (IoT) \u5b89\u5168<\/strong>\uff1a\u968f\u7740\u7269\u8054\u7f51\u8bbe\u5907\u7684\u6fc0\u589e\uff0c\u72b6\u6001\u68c0\u67e5\u5c06\u6709\u52a9\u4e8e\u4fdd\u62a4\u8fd9\u4e9b\u8bbe\u5907\u4e0e\u4e2d\u592e\u7cfb\u7edf\u4e4b\u95f4\u7684\u901a\u4fe1\u3002<\/p>\n<\/li>\n

            4. \n

              \u57fa\u4e8e\u4e91\u7684\u9632\u706b\u5899<\/strong>\uff1a\u57fa\u4e8e\u4e91\u7684\u72b6\u6001\u68c0\u6d4b\u9632\u706b\u5899\u5c06\u5b9e\u73b0\u53ef\u6269\u5c55\u4e14\u7075\u6d3b\u7684\u5b89\u5168\u89e3\u51b3\u65b9\u6848\uff0c\u9002\u5e94\u73b0\u4ee3\u4e91\u8ba1\u7b97\u73af\u5883\u3002<\/p>\n<\/li>\n<\/ol>\n

              \u5982\u4f55\u4f7f\u7528\u4ee3\u7406\u670d\u52a1\u5668\u6216\u5c06\u5176\u4e0e\u72b6\u6001\u68c0\u67e5\u5173\u8054<\/h2>\n

              \u4ee3\u7406\u670d\u52a1\u5668\u548c\u72b6\u6001\u68c0\u67e5\u53ef\u4ee5\u534f\u540c\u5de5\u4f5c\uff0c\u4e3a\u7528\u6237\u63d0\u4f9b\u589e\u5f3a\u7684\u5b89\u5168\u6027\u548c\u9690\u79c1\u6027\u3002\u4ee3\u7406\u670d\u52a1\u5668\u5145\u5f53\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u4e2d\u4ecb\uff0c\u4ee3\u8868\u5ba2\u6237\u7aef\u8f6c\u53d1\u8bf7\u6c42\u3002\u901a\u8fc7\u5728\u4ee3\u7406\u670d\u52a1\u5668\u4e2d\u5408\u5e76\u72b6\u6001\u68c0\u67e5\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4ee5\u4e0b\u51e0\u4e2a\u597d\u5904\uff1a<\/p>\n

                \n
              1. \n

                \u589e\u52a0\u533f\u540d\u6027<\/strong>\uff1a\u4ee3\u7406\u670d\u52a1\u5668\u53ef\u4ee5\u5bf9\u5916\u90e8\u670d\u52a1\u5668\u9690\u85cf\u7528\u6237\u7684IP\u5730\u5740\u3002\u901a\u8fc7\u72b6\u6001\u68c0\u67e5\uff0c\u4ee3\u7406\u53ef\u4ee5\u4e3b\u52a8\u7ba1\u7406\u8fde\u63a5\u5e76\u786e\u4fdd\u4fdd\u7559\u7528\u6237\u7684\u533f\u540d\u6027\u3002<\/p>\n<\/li>\n

              2. \n

                \u5185\u5bb9\u8fc7\u6ee4<\/strong>\uff1a\u4ee3\u7406\u670d\u52a1\u5668\u4e2d\u7684\u72b6\u6001\u68c0\u67e5\u652f\u6301\u5185\u5bb9\u8fc7\u6ee4\uff0c\u5141\u8bb8\u7ba1\u7406\u5458\u63a7\u5236\u7528\u6237\u53ef\u4ee5\u8bbf\u95ee\u54ea\u4e9b\u6570\u636e\u3002<\/p>\n<\/li>\n

              3. \n

                \u6076\u610f\u8f6f\u4ef6\u68c0\u6d4b<\/strong>\uff1a\u5177\u6709 DPI \u529f\u80fd\u7684\u4ee3\u7406\u670d\u52a1\u5668\u53ef\u4ee5\u626b\u63cf\u4f20\u5165\u6d41\u91cf\u4e2d\u662f\u5426\u5b58\u5728\u6076\u610f\u8f6f\u4ef6\u548c\u6076\u610f\u5185\u5bb9\uff0c\u4ece\u800c\u63d0\u4f9b\u989d\u5916\u7684\u4fdd\u62a4\u5c42\u3002<\/p>\n<\/li>\n

              4. \n

                \u6d41\u91cf\u76d1\u63a7<\/strong>\uff1a\u4ee3\u7406\u4e2d\u7684\u72b6\u6001\u68c0\u67e5\u5141\u8bb8\u8be6\u7ec6\u76d1\u63a7\u7f51\u7edc\u6d41\u91cf\uff0c\u5e2e\u52a9\u8bc6\u522b\u6f5c\u5728\u7684\u5b89\u5168\u5a01\u80c1\u6216\u672a\u7ecf\u6388\u6743\u7684\u6d3b\u52a8\u3002<\/p>\n<\/li>\n<\/ol>\n

                \u76f8\u5173\u94fe\u63a5<\/h2>\n

                \u6709\u5173\u72b6\u6001\u68c0\u67e5\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u60a8\u53ef\u4ee5\u6d4f\u89c8\u4ee5\u4e0b\u8d44\u6e90\uff1a<\/p>\n

                  \n
                1. \u9632\u706b\u5899\u548c\u4e92\u8054\u7f51\u5b89\u5168\uff1a\u51fb\u9000\u72e1\u733e\u7684\u9ed1\u5ba2<\/a> \u4f5c\u8005\uff1a\u5a01\u5ec9\u00b7R\u00b7\u5207\u897f\u514b (William R. Cheswick) \u548c\u53f2\u8482\u6587\u00b7M\u00b7\u8d1d\u6d1b\u6587 (Steven M. Bellovin)\u3002<\/li>\n
                2. \u4e86\u89e3\u72b6\u6001\u68c0\u67e5\u9632\u706b\u5899<\/a> \u7531 SANS \u7814\u7a76\u6240\u63d0\u4f9b\u3002<\/li>\n
                3. \u6df1\u5ea6\u6570\u636e\u5305\u68c0\u67e5\uff1a\u6307\u5357<\/a> \u7531\u7f51\u7edc\u4e16\u754c\u3002<\/li>\n<\/ol>\n

                  \u603b\u4e4b\uff0c\u72b6\u6001\u68c0\u67e5\u662f\u73b0\u4ee3\u7f51\u7edc\u5b89\u5168\u4e2d\u7684\u4e00\u9879\u91cd\u8981\u6280\u672f\uff0c\u4e3a\u6570\u636e\u5305\u8fc7\u6ee4\u548c\u8bbf\u95ee\u63a7\u5236\u63d0\u4f9b\u4e86\u6df1\u5165\u7684\u65b9\u6cd5\u3002\u5b83\u7ef4\u62a4\u8fde\u63a5\u72b6\u6001\u4fe1\u606f\u548c\u6267\u884c\u6df1\u5ea6\u6570\u636e\u5305\u68c0\u67e5\u7684\u80fd\u529b\u4f7f\u5176\u6709\u522b\u4e8e\u4f20\u7edf\u7684\u6570\u636e\u5305\u8fc7\u6ee4\u65b9\u6cd5\u3002\u968f\u7740\u7f51\u7edc\u7684\u4e0d\u65ad\u53d1\u5c55\uff0c\u72b6\u6001\u68c0\u67e5\u5c06\u5728\u786e\u4fdd\u6570\u636e\u4f20\u8f93\u7684\u5b89\u5168\u6027\u3001\u9690\u79c1\u6027\u548c\u6548\u7387\u65b9\u9762\u53d1\u6325\u5173\u952e\u4f5c\u7528\u3002<\/p>","protected":false},"featured_media":479134,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-479133","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about Stateful Inspection: A Comprehensive Guide<\/mark>","faq_items":[{"question":"What is Stateful inspection and how does it enhance network security?<\/strong>","answer":"

                  Stateful inspection, also known as dynamic packet filtering, is a firewall technology that operates at the application layer. Unlike traditional packet filtering, it keeps track of the state of network connections, allowing for a more informed approach to packet filtering and access control. By maintaining context about each connection, Stateful inspection can detect and prevent sophisticated attacks, enhancing network security and ensuring the integrity of data transmitted across networks.<\/p>"},{"question":"How did Stateful inspection evolve, and where was it first mentioned?<\/strong>","answer":"

                  Stateful inspection emerged in the late 1980s as an improvement over earlier firewall technologies. The concept was first introduced by William R. Cheswick and Steven M. Bellovin in their book \"Firewalls and Internet Security: Repelling the Wily Hacker,\" published in 1994. Their work laid the foundation for using state information to enhance firewall security, and Stateful inspection quickly gained popularity as a fundamental technique in modern firewall implementations.<\/p>"},{"question":"What makes Stateful inspection different from other firewall technologies like Stateless Packet Filtering and DPI?<\/strong>","answer":"

                  Stateful inspection stands out due to its ability to maintain connection state information, enabling it to analyze packets in the context of their associated sessions. In contrast, Stateless Packet Filtering only evaluates packet headers without context. Deep Packet Inspection (DPI) takes stateful inspection further by analyzing packet content at the application layer, providing advanced filtering and intrusion detection capabilities.<\/p>"},{"question":"What are the main use cases for Stateful inspection?<\/strong>","answer":"

                  Stateful inspection finds widespread use in various network security scenarios. Its main use cases include firewall protection, Network Address Translation (NAT), Virtual Private Networks (VPNs), and Intrusion Detection and Prevention Systems (IDPS).<\/p>"},{"question":"How does Stateful inspection handle challenges like State Table size and resource consumption?<\/strong>","answer":"

                  Stateful inspection faces challenges with the growing State Table size in high-traffic networks. To address this, efficient table management and timeouts for inactive connections are crucial. Additionally, Deep Packet Inspection (DPI) can be resource-intensive, but hardware acceleration and optimization techniques help overcome performance bottlenecks.<\/p>"},{"question":"How can Stateful inspection be combined with proxy servers for enhanced security and privacy?<\/strong>","answer":"

                  Proxy servers and Stateful inspection complement each other to provide improved security and privacy. Stateful inspection in proxy servers allows for increased anonymity by actively managing connections and hiding users' IP addresses. It also enables content filtering, malware detection, and traffic monitoring for a more secure browsing experience.<\/p>"},{"question":"What are the future perspectives and technologies related to Stateful inspection?<\/strong>","answer":"

                  The future of Stateful inspection looks promising as it incorporates machine learning for adaptive security measures. With the rise of 5G networks, Stateful inspection will play a crucial role in securing them. Additionally, it will contribute to securing IoT devices and find applications in cloud-based firewall solutions.<\/p>"},{"question":"Where can I find more resources and information about Stateful inspection?<\/strong>","answer":"

                  To learn more about Stateful inspection, you can explore resources such as the book \"Firewalls and Internet Security: Repelling the Wily Hacker\" by William R. Cheswick and Steven M. Bellovin, articles from SANS Institute, and insights from OneProxy, your reliable proxy server provider. Stay informed and secure with the latest advancements in network security!<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/479133","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/479133\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media\/479134"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media?parent=479133"}],"curies":[{"name":"\u53ef\u6e7f\u6027\u7c89\u5242","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}