{"id":15953,"date":"2025-04-18T22:27:03","date_gmt":"2025-04-18T14:27:03","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/15953.html"},"modified":"2025-04-18T22:27:03","modified_gmt":"2025-04-18T14:27:03","slug":"nat%e5%8d%8f%e8%ae%ae%e8%af%a6%e8%a7%a3%ef%bc%88%e7%bd%91%e7%bb%9c%e5%b1%82%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/15953.html","title":{"rendered":"NAT\u534f\u8bae\u8be6\u89e3\uff08\u7f51\u7edc\u5c42\uff09"},"content":{"rendered":"<\/p>\n<h4>NAT\u534f\u8bae\u8be6\u89e3&#xff08;\u7f51\u7edc\u5c42&#xff09;<\/h4>\n<ul>\n<li>1\u3001\u6982\u8ff0<\/li>\n<li>2\u3001NAT\u7684\u57fa\u672c\u6982\u5ff5<\/li>\n<li>\n<ul>\n<li>1. \u79c1\u6709IP\u5730\u5740<\/li>\n<li>2. \u516c\u5171IP\u5730\u5740<\/li>\n<\/ul>\n<\/li>\n<li>3\u3001NAT\u7684\u5de5\u4f5c\u539f\u7406<\/li>\n<li>4\u3001NAT\u7684\u7c7b\u578b<\/li>\n<li>5\u3001NAT\u7684\u4f18\u52bf<\/li>\n<li>6\u3001NAT\u7684\u5b9e\u9645\u5e94\u7528\u6848\u4f8b<\/li>\n<li>7\u3001NAT\u7684\u9650\u5236\u548c\u6311\u6218<\/li>\n<li>8\u3001\u603b\u7ed3<\/li>\n<\/ul>\n<h2>1\u3001\u6982\u8ff0<\/h2>\n<p>\u7f51\u7edc\u5730\u5740\u8f6c\u6362&#xff08;Network Address Translation&#xff0c;\u7b80\u79f0NAT&#xff09;\u662f\u4e00\u79cd\u5728\u7f51\u7edc\u5c42\u7528\u4e8e\u4fee\u6539IP\u5730\u5740\u4fe1\u606f\u7684\u6280\u672f\u3002NAT\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5bb6\u5ead\u548c\u4f01\u4e1a\u7f51\u7edc\u4e2d&#xff0c;\u4ee5\u4fbf\u591a\u4e2a\u8bbe\u5907\u80fd\u591f\u5171\u4eab\u4e00\u4e2a\u516c\u5171IP\u5730\u5740\u8fdb\u884c\u4e0a\u7f51\u8bbf\u95ee\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecdNAT\u7684\u5de5\u4f5c\u539f\u7406\u3001\u7c7b\u578b\u3001\u4f18\u52bf\u4ee5\u53ca\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u6848\u4f8b\u3002<\/p>\n<h2>2\u3001NAT\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>NAT\u662f\u7531IETF\u63d0\u51fa\u7684&#xff0c;\u5176\u4e3b\u8981\u76ee\u7684\u662f\u89e3\u51b3IPv4\u5730\u5740\u8d44\u6e90\u7d27\u7f3a\u7684\u95ee\u9898\u3002NAT\u901a\u8fc7\u5c06\u79c1\u6709\u7f51\u7edc\u5185\u90e8\u7684IP\u5730\u5740\u8f6c\u6362\u4e3a\u516c\u5171\u7f51\u7edc\u4e0a\u7684IP\u5730\u5740&#xff0c;\u4f7f\u5f97\u591a\u4e2a\u5185\u90e8\u8bbe\u5907\u53ef\u4ee5\u5171\u4eab\u4e00\u4e2a\u6216\u591a\u4e2a\u516c\u5171IP\u5730\u5740\u3002<\/p>\n<h3>1. \u79c1\u6709IP\u5730\u5740<\/h3>\n<p>\u79c1\u6709IP\u5730\u5740\u662f\u6307\u5728\u5c40\u57df\u7f51&#xff08;LAN&#xff09;\u4e2d\u4f7f\u7528\u7684IP\u5730\u5740&#xff0c;\u4e0d\u80fd\u5728\u4e92\u8054\u7f51\u4e2d\u8fdb\u884c\u8def\u7531\u3002\u5e38\u89c1\u7684\u79c1\u6709IP\u5730\u5740\u8303\u56f4\u5305\u62ec&#xff1a;<\/p>\n<p>10.0.0.0 ~ 10.255.255.255<br \/>\n172.16.0.0 ~ 172.31.255.255<br \/>\n192.168.0.0 ~ 192.168.255.255<\/p>\n<h3>2. \u516c\u5171IP\u5730\u5740<\/h3>\n<p>\u516c\u5171IP\u5730\u5740\u662f\u6307\u5728\u4e92\u8054\u7f51\u4e0a\u8fdb\u884c\u8def\u7531\u7684IP\u5730\u5740&#xff0c;\u5206\u914d\u7531\u4e92\u8054\u7f51\u670d\u52a1\u63d0\u4f9b\u5546&#xff08;ISP&#xff09;\u7ba1\u7406\u3002<\/p>\n<h2>3\u3001NAT\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>NAT\u7684\u6838\u5fc3\u529f\u80fd\u662f\u4fee\u6539IP\u6570\u636e\u5305\u7684\u6e90\u5730\u5740\u6216\u76ee\u6807\u5730\u5740&#xff0c;\u4ece\u800c\u5b9e\u73b0\u5730\u5740\u8f6c\u6362\u3002\u5176\u57fa\u672c\u5de5\u4f5c\u539f\u7406\u5982\u4e0b&#xff1a;<\/p>\n<ul>\n<li>\u6570\u636e\u5305\u53d1\u9001&#xff1a;\u5f53\u5185\u90e8\u8bbe\u5907\u53d1\u9001\u6570\u636e\u5305\u5230\u5916\u90e8\u7f51\u7edc\u65f6&#xff0c;NAT\u8bbe\u5907&#xff08;\u5982\u8def\u7531\u5668&#xff09;\u4f1a\u5c06\u6570\u636e\u5305\u7684\u6e90IP\u5730\u5740\u4ece\u79c1\u6709IP\u5730\u5740\u8f6c\u6362\u4e3a\u516c\u5171IP\u5730\u5740\u3002<\/li>\n<li>\u6570\u636e\u5305\u63a5\u6536&#xff1a;\u5f53\u5916\u90e8\u7f51\u7edc\u7684\u54cd\u5e94\u6570\u636e\u5305\u5230\u8fbeNAT\u8bbe\u5907\u65f6&#xff0c;NAT\u8bbe\u5907\u4f1a\u5c06\u6570\u636e\u5305\u7684\u76ee\u6807IP\u5730\u5740\u4ece\u516c\u5171IP\u5730\u5740\u8f6c\u6362\u56de\u76f8\u5e94\u7684\u79c1\u6709IP\u5730\u5740&#xff0c;\u5e76\u5c06\u6570\u636e\u5305\u8f6c\u53d1\u7ed9\u5185\u90e8\u8bbe\u5907\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u8fd9\u79cd\u8f6c\u6362\u673a\u5236&#xff0c;NAT\u8bbe\u5907\u80fd\u591f\u4f7f\u5185\u90e8\u7f51\u7edc\u4e2d\u7684\u591a\u4e2a\u8bbe\u5907\u5171\u4eab\u4e00\u4e2a\u516c\u5171IP\u5730\u5740\u8fdb\u884c\u4e0a\u7f51\u8bbf\u95ee\u3002<\/p>\n<h2>4\u3001NAT\u7684\u7c7b\u578b<\/h2>\n<p>NAT\u6709\u591a\u79cd\u7c7b\u578b&#xff0c;\u6839\u636e\u5176\u5b9e\u73b0\u65b9\u5f0f\u548c\u529f\u80fd\u7684\u4e0d\u540c&#xff0c;\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u51e0\u79cd&#xff1a;<\/p>\n<ul>\n<li>1\u3001\u9759\u6001NAT&#xff08;Static NAT&#xff09; \u9759\u6001NAT\u662f\u4e00\u79cd\u4e00\u5bf9\u4e00\u7684\u5730\u5740\u8f6c\u6362\u65b9\u5f0f&#xff0c;\u5c06\u4e00\u4e2a\u79c1\u6709IP\u5730\u5740\u6620\u5c04\u4e3a\u4e00\u4e2a\u56fa\u5b9a\u7684\u516c\u5171IP\u5730\u5740\u3002\u6bcf\u4e2a\u5185\u90e8\u8bbe\u5907\u90fd\u5bf9\u5e94\u4e00\u4e2a\u552f\u4e00\u7684\u516c\u5171IP\u5730\u5740\u3002\n<ul>\n<li>\u4f18\u70b9&#xff1a; \u7b80\u5355\u6613\u7528&#xff0c;\u914d\u7f6e\u56fa\u5b9a\u3002 \u9002\u7528\u4e8e\u9700\u8981\u56fa\u5b9aIP\u5730\u5740\u7684\u670d\u52a1&#xff0c;\u5982\u670d\u52a1\u5668\u6258\u7ba1\u3002<\/li>\n<li>\u7f3a\u70b9&#xff1a; \u4e0d\u80fd\u8282\u7701IP\u5730\u5740\u8d44\u6e90\u3002 \u4e0d\u9002\u7528\u4e8e\u5927\u89c4\u6a21\u7f51\u7edc\u3002<\/li>\n<\/ul>\n<\/li>\n<li>2\u3001\u52a8\u6001NAT&#xff08;Dynamic NAT&#xff09; \u52a8\u6001NAT\u662f\u4e00\u79cd\u591a\u5bf9\u591a\u7684\u5730\u5740\u8f6c\u6362\u65b9\u5f0f&#xff0c;\u5c06\u591a\u4e2a\u79c1\u6709IP\u5730\u5740\u52a8\u6001\u6620\u5c04\u4e3a\u591a\u4e2a\u516c\u5171IP\u5730\u5740\u3002NAT\u8bbe\u5907\u7ef4\u62a4\u4e00\u4e2a\u5730\u5740\u6c60&#xff0c;\u5e76\u6839\u636e\u9700\u8981\u5206\u914d\u516c\u5171IP\u5730\u5740\u3002\n<ul>\n<li>\u4f18\u70b9&#xff1a; \u6bd4\u9759\u6001NAT\u8282\u7701IP\u5730\u5740\u8d44\u6e90\u3002 \u52a8\u6001\u5206\u914d&#xff0c;\u7075\u6d3b\u6027\u8f83\u9ad8\u3002<\/li>\n<li>\u7f3a\u70b9&#xff1a; \u4ecd\u7136\u9700\u8981\u591a\u4e2a\u516c\u5171IP\u5730\u5740\u3002 \u914d\u7f6e\u548c\u7ba1\u7406\u76f8\u5bf9\u590d\u6742\u3002<\/li>\n<\/ul>\n<\/li>\n<li>3\u3001\u7aef\u53e3\u5730\u5740\u8f6c\u6362&#xff08;PAT&#xff0c;Port Address Translation&#xff09; \u7aef\u53e3\u5730\u5740\u8f6c\u6362&#xff08;\u4e5f\u79f0\u4e3aNAT Overload&#xff09;\u662f\u4e00\u79cd\u591a\u5bf9\u4e00\u7684\u5730\u5740\u8f6c\u6362\u65b9\u5f0f&#xff0c;\u5c06\u591a\u4e2a\u79c1\u6709IP\u5730\u5740\u6620\u5c04\u4e3a\u4e00\u4e2a\u516c\u5171IP\u5730\u5740&#xff0c;\u901a\u8fc7\u4e0d\u540c\u7684\u7aef\u53e3\u53f7\u8fdb\u884c\u533a\u5206\u3002\n<ul>\n<li>\u4f18\u70b9&#xff1a; \u6700\u5927\u9650\u5ea6\u5730\u8282\u7701\u516c\u5171IP\u5730\u5740\u8d44\u6e90\u3002 \u9002\u7528\u4e8e\u5927\u591a\u6570\u5bb6\u5ead\u548c\u5c0f\u578b\u4f01\u4e1a\u7f51\u7edc\u3002<\/li>\n<li>\u7f3a\u70b9&#xff1a; \u7aef\u53e3\u53f7\u6709\u9650\u5236\u3010\u7aef\u53e3\u53f716\u4f4d&#xff0c;\u652f\u6301\u7684\u6700\u5927\u4e3b\u673a\u6570\u7ea6\u4e3a2<sup>16<\/sup>\u3011&#xff0c;\u8fc7\u591a\u7684\u8fde\u63a5\u53ef\u80fd\u5bfc\u81f4\u7aef\u53e3\u8017\u5c3d\u3002 \u53ef\u80fd\u5f15\u53d1\u67d0\u4e9b\u534f\u8bae\u6216\u5e94\u7528\u7684\u517c\u5bb9\u6027\u95ee\u9898\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>5\u3001NAT\u7684\u4f18\u52bf<\/h2>\n<ul>\n<li>\n<p>NAT\u5177\u6709\u4ee5\u4e0b\u51e0\u4e2a\u663e\u8457\u4f18\u52bf&#xff1a;<\/p>\n<ul>\n<li>\u8282\u7701IP\u5730\u5740\u8d44\u6e90&#xff1a;\u901a\u8fc7NAT&#xff0c;\u53ef\u4ee5\u4f7f\u7528\u5c11\u91cf\u7684\u516c\u5171IP\u5730\u5740\u652f\u6301\u5927\u91cf\u7684\u5185\u90e8\u8bbe\u5907&#xff0c;\u7f13\u89e3IPv4\u5730\u5740\u8d44\u6e90\u7d27\u5f20\u7684\u95ee\u9898\u3002<\/li>\n<li>\u589e\u5f3a\u7f51\u7edc\u5b89\u5168&#xff1a;\u5185\u90e8\u8bbe\u5907\u7684\u79c1\u6709IP\u5730\u5740\u5bf9\u5916\u90e8\u7f51\u7edc\u4e0d\u53ef\u89c1&#xff0c;\u4ece\u800c\u63d0\u4f9b\u4e86\u4e00\u5b9a\u7a0b\u5ea6\u7684\u5b89\u5168\u4fdd\u62a4&#xff0c;\u9632\u6b62\u5916\u90e8\u653b\u51fb\u76f4\u63a5\u8bbf\u95ee\u5185\u90e8\u8bbe\u5907\u3002<\/li>\n<li>\u7b80\u5316\u7f51\u7edc\u7ba1\u7406&#xff1a;\u901a\u8fc7NAT&#xff0c;\u5185\u90e8\u7f51\u7edc\u7684IP\u5730\u5740\u53ef\u4ee5\u72ec\u7acb\u4e8e\u5916\u90e8\u7f51\u7edc\u8fdb\u884c\u7ba1\u7406\u548c\u5206\u914d&#xff0c;\u7b80\u5316\u4e86IP\u5730\u5740\u7684\u89c4\u5212\u548c\u7ba1\u7406\u5de5\u4f5c\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>6\u3001NAT\u7684\u5b9e\u9645\u5e94\u7528\u6848\u4f8b<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418142702-680261367af57.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u5047\u8bbe\u5f53\u524d\u573a\u666f\u5982\u4e0a\u56fe\u3002\u4e2d\u95f4\u662f\u4e00\u4e2a\u8def\u7531\u5668&#xff0c;\u5b83\u7684\u53f3\u4fa7\u7ec4\u7ec7\u4e86\u4e00\u4e2aLAN&#xff0c;\u7f51\u7edc\u53f7\u4e3a 10.0.0\/24 \u3002 LAN \u4fa7\u63a5\u53e3\u7684 IP \u5730\u5740\u4e3a 10.0.0.4 &#xff0c;\u5e76\u4e14\u8be5\u5b50\u7f51\u5185\u6709\u81f3\u5c11\u4e09\u53f0\u4e3b\u673a&#xff0c;\u5206\u522b\u662f 10.0.0.1&#xff0c;10.0.0.2\u548c10.0.0.3\u3002 \u8def\u7531\u5668\u7684\u5de6\u4fa7\u8fde\u63a5\u7684\u662f WAN&#xff0c;WAN \u4fa7\u63a5\u56d7\u7684 IP \u5730\u5740\u4e3a 138.76.29.7 \u3002 \u9996\u5148&#xff0c;\u9488\u5bf9\u4ee5\u4e0a\u4fe1\u606f&#xff0c;\u6211\u4eec\u6709\u5982\u4e0b\u4e8b\u5b9e\u9700\u8981\u8bf4\u660e:<\/p>\n<ul>\n<li>1.\u8def\u7531\u5668\u7684\u53f3\u4fa7\u5b50\u7f51\u7684\u7f51\u7edc\u53f7\u4e3a 10.0.0\/24 &#xff0c;\u4e3b\u673a\u53f7\u4e3a 10.0.0\/8 &#xff0c;\u4e09\u53f0\u4e3b\u673a\u5730\u5740&#xff0c;\u4ee5\u53ca\u8def\u7531\u5668\u7684 LAN \u4fa7\u63a5\u53e3\u5730\u5740&#xff0c;\u5747\u7531 DHCP\u534f\u8bae\u89c4\u5b9a\u3002\u800c\u4e14&#xff0c;\u8be5 DHCP\u8fd0\u884c\u5728\u8def\u7531\u5668\u5185\u90e8(\u8def\u7531\u5668\u81ea\u7ef4\u62a4\u4e00\u4e2a\u5c0fDHCP \u670d\u52a1\u5668)&#xff0c;\u4ece\u800c\u4e3a\u5b50\u7f51\u5185\u63d0\u4f9b DHCP \u670d\u52a1\u3002<\/li>\n<li>2.\u8def\u7531\u5668\u7684 WAN \u4fa7\u63a5\u53e3\u5730\u5740\u540c\u6837\u7531 DHCP \u534f\u8bae\u89c4\u5b9a&#xff0c;\u4f46\u8be5\u5730\u5740\u662f\u8def\u7531\u5668\u4ece ISP(\u7f51\u7edc\u670d\u52a1\u63d0\u4f9b\u5546)\u5904\u83b7\u5f97&#xff0c;\u4e5f\u5c31\u662f\u8be5 DHCP \u901a\u5e38\u8fd0\u884c\u5728\u8def\u7531\u5668\u6240\u5728\u533a\u57df\u7684 DHCP \u670d\u52a1\u5668\u4e0a\u3002<\/li>\n<\/ul>\n<p>\u73b0\u5728&#xff0c;\u8def\u7531\u5668\u5185\u90e8\u8fd8\u8fd0\u884c\u7740 NAT \u534f\u8bae&#xff0c;\u4ece\u800c\u4e3aLAN-WAN \u95f4\u901a\u4fe1\u63d0\u4f9b\u5730\u5740\u8f6c\u6362\u670d\u52a1\u3002\u4e3a\u6b64&#xff0c;\u4e00\u4e2a\u5f88\u91cd\u8981\u7684\u7ed3\u6784\u662f NAT \u8f6c\u6362\u8868\u3002\u4e3a\u4e86\u8bf4\u660e NAT\u7684\u8fd0\u884c\u7ec6\u8282&#xff0c;\u5047\u8bbe\u6709\u4ee5\u4e0b\u8bf7\u6c42\u53d1\u751f:<\/p>\n<ul>\n<li>1.\u4e3b\u673a 10.0.0.1 \u5411 IP \u5730\u5740\u4e3a 128.119.40.186 \u7684Web \u670d\u52a1\u5668(\u7aef\u56d780)\u53d1\u9001\u4e86HTTP \u8bf7\u6c42(\u5982\u8bf7\u6c42\u9875\u9762)\u3002\u6b64\u65f6&#xff0c;\u4e3b\u673a 10.0.0.1 \u5c06\u968f\u673a\u6307\u6d3e\u4e00\u4e2a\u7aef\u53e3&#xff0c;\u5982 3345 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