{"id":185,"date":"2026-03-25T00:30:51","date_gmt":"2026-03-24T16:30:51","guid":{"rendered":"https:\/\/codergodv.xyz\/?p=185"},"modified":"2026-03-25T00:30:52","modified_gmt":"2026-03-24T16:30:52","slug":"dns%e5%8d%8f%e8%ae%ae%e3%80%81icmp%e5%8d%8f%e8%ae%ae%e3%80%81nat%e6%8a%80%e6%9c%af","status":"publish","type":"post","link":"https:\/\/codergodv.xyz\/index.php\/2026\/03\/25\/dns%e5%8d%8f%e8%ae%ae%e3%80%81icmp%e5%8d%8f%e8%ae%ae%e3%80%81nat%e6%8a%80%e6%9c%af\/","title":{"rendered":"DNS\u534f\u8bae\u3001ICMP\u534f\u8bae\u3001NAT\u6280\u672f"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">DNS\u534f\u8bae<\/h2>\n\n\n\n<p>DNS\uff08Domain Name System\uff0c\u57df\u540d\u7cfb\u7edf\uff09\u534f\u8bae\uff0c\u662f\u4e00\u4e2a\u7528\u6765\u5c06\u57df\u540d\u8f6c\u5316\u4e3aIP\u5730\u5740\u7684\u5e94\u7528\u5c42\u534f\u8bae\u3002<\/p>\n\n\n\n<h3 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class=\"wp-block-heading\">\u57df\u540d\u4ecb\u7ecd<\/h3>\n\n\n\n<p>\u57df\u540d\u662f\u7528\u6765\u6807\u8bc6\u4e3b\u673a\u540d\u79f0\u548c\u4e3b\u673a\u6240\u5c5e\u7684\u7ec4\u7ec7\u673a\u6784\u7684\u4e00\u79cd\u5206\u5c42\u7ed3\u6784\u7684\u540d\u79f0\uff0c\u4f8b\u5982<code>www.baidu.com<\/code>\u3002<\/p>\n\n\n\n<ul 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8.8.8.8\u548c\u56fd\u5185\u516c\u7528DNS 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class=\"wp-block-heading\">\u4f7f\u7528dig\u5de5\u5177\u5206\u6790DNS\u8fc7\u7a0b<\/h3>\n\n\n\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528dig\u5de5\u5177\u6765\u67e5\u770b\u57df\u540d\u89e3\u6790\u7684\u8fc7\u7a0b\uff0c\u4f8b\u5982\u67e5\u770b\u767e\u5ea6\u57df\u540d<code>www.baidu.com<\/code>\u7684\u89e3\u6790\u8fc7\u7a0b\u3002<\/p>\n\n\n\n<p>dig\u5de5\u5177\u7684\u5206\u6790\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/20260325001953435.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260325001953435.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"dig www.baidu.com\"\/><\/div><\/figure>\n\n\n\n<p>\u7ed3\u679c\u89e3\u91ca\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f00\u5934\u4f4d\u7f6e\u662fdig\u5de5\u5177\u7684\u7248\u672c\u53f7\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e8c\u90e8\u5206\u662f\u670d\u52a1\u5668\u8fd4\u56de\u7684\u8be6\u60c5\uff0c\u5176\u4e2dstatus\u53c2\u6570\u4e3aNOERROR\u8868\u793a\u67e5\u8be2\u6210\u529f\u3002<\/li>\n\n\n\n<li>QUESTION SECTION\u8868\u793a\u5f85\u67e5\u8be2\u7684\u57df\u540d\u3002<\/li>\n\n\n\n<li>ANSWER SECTION\u8868\u793a\u67e5\u8be2\u7684\u7ed3\u679c\uff0c\u9996\u5148<code>www.baidu.com<\/code>\u88ab\u67e5\u8be2\u6210\u4e86<code>www.a.shifen.com<\/code>\uff0c\u800c\u6700\u7ec8<code>www.a.shifen.com<\/code>\u88ab\u67e5\u8be2\u6210\u4e86\u4e24\u4e2a\u5177\u4f53\u7684IP\u5730\u5740\u3002<\/li>\n\n\n\n<li>\u6700\u4e0b\u9762\u662f\u4e00\u4e9b\u7ed3\u679c\u7edf\u8ba1\uff0c\u5305\u542b\u67e5\u8be2\u65f6\u95f4\u548cDNS\u670d\u52a1\u5668\u7684\u5730\u5740\u7b49\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">ICMP\u534f\u8bae<\/h2>\n\n\n\n<p>ICMP\uff08Internet Control Message Protocol\uff09Internet\u63a7\u5236\u62a5\u6587\u534f\u8bae\uff0c\u7528\u4e8e\u5728IP\u4e3b\u673a\u3001\u8def\u7531\u5668\u4e4b\u95f4\u4f20\u9012\u63a7\u5236\u4fe1\u606f\uff0c\u662f\u4e00\u4e2aTCP\/IP\u534f\u8bae\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>ICMP\u534f\u8bae\u7684\u5b9a\u4f4d<\/p>\n<\/blockquote>\n\n\n\n<p>\u5728TCP\/IP\u56db\u5c42\u6a21\u578b\u4e2d\uff0c\u7f51\u7edc\u534f\u8bae\u6808\u81ea\u9876\u5411\u4e0b\u5206\u4e3a\u5e94\u7528\u5c42\u3001\u4f20\u8f93\u5c42\u3001\u7f51\u7edc\u5c42\u548c\u6570\u636e\u94fe\u8def\u5c42\u3002<\/p>\n\n\n\n<p>\u5176\u4e2d\u5e94\u7528\u5c42\u6700\u5178\u578b\u7684\u534f\u8bae\u6709HTTP\u3001HTTPS\u548cDNS\u7b49\uff0c\u4f20\u8f93\u5c42\u6700\u5178\u578b\u7684\u534f\u8bae\u6709TCP\u548cUDP\uff0c\u7f51\u7edc\u5c42\u6700\u5178\u578b\u7684\u534f\u8bae\u5c31\u662fIP\uff0c\u6570\u636e\u94fe\u8def\u5c42\u6700\u5178\u578b\u7684\u534f\u8bae\u5c31\u662fMAC\u5e27\u534f\u8bae\uff0c\u4f46\u5b9e\u9645\u7f51\u7edc\u5c42\u8fd8\u6709\u4e24\u79cd\u534f\u8bae\u53eb\u505aICMP\u548cIGMP\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/a43fa77dd53a4758a9ebe280ee4771e1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/a43fa77dd53a4758a9ebe280ee4771e1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>ICMP\u3001IGMP\u548cIP\u534f\u8bae\u867d\u7136\u90fd\u5c5e\u4e8e\u7f51\u7edc\u5c42\u7684\u534f\u8bae\uff0c\u4f46ICMP\u534f\u8bae\u548cIGMP\u534f\u8bae\u5c5e\u4e8eIP\u7684\u4e0a\u5c42\u534f\u8bae\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e5f\u5c31\u662f\u8bf4\uff0cIP\u7684\u4e0a\u5c42\u534f\u8bae\u4e0d\u4e00\u5b9a\u5c31\u76f4\u63a5\u662f\u4f20\u8f93\u5c42\u7684\u534f\u8bae\uff0cIP\u7684\u4e0a\u5c42\u534f\u8bae\u6709\u53ef\u80fd\u4e5f\u5c5e\u4e8e\u7f51\u7edc\u5c42\u7684\u534f\u8bae\uff0c\u4f46\u5c31\u662f\u4f4d\u4e8eIP\u7684\u4e0a\u5c42\u3002<\/li>\n\n\n\n<li>\u4e0e\u4e4b\u7c7b\u4f3c\u7684\uff0c\u6570\u636e\u94fe\u8def\u5c42\u5f53\u4e2d\u7684ARP\u534f\u8bae\u548cRARP\u534f\u8bae\uff0c\u8fd9\u4e24\u4e2a\u534f\u8bae\u867d\u7136\u4e0eMAC\u5e27\u534f\u8bae\u90fd\u5c5e\u4e8e\u6570\u636e\u94fe\u8def\u5c42\uff0c\u4f46\u8fd9\u4e24\u4e2a\u534f\u8bae\u5c5e\u4e8eMAC\u5e27\u7684\u4e0a\u5c42\u534f\u8bae\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">ICMP\u529f\u80fd<\/h3>\n\n\n\n<p>ICMP\u7684\u4e3b\u8981\u529f\u80fd\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u786e\u8ba4IP\u5305\u662f\u5426\u6210\u529f\u5230\u8fbe\u76ee\u6807\u5730\u5740\u3002<\/li>\n\n\n\n<li>\u901a\u77e5\u5728\u53d1\u9001\u8fc7\u7a0b\u4e2dIP\u5305\u4e22\u5f03\u7684\u539f\u56e0\u3002<\/li>\n\n\n\n<li>ICMP\u53ea\u80fd\u642d\u914dIPv4\u4f7f\u7528\uff0c\u5982\u679c\u662fIPv6\u7684\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u4f7f\u7528ICMPv6\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4e3e\u4e2a\u4f8b\u5b50<\/p>\n<\/blockquote>\n\n\n\n<p>\u6bd4\u5982\u5f53\u4e3b\u673aA\u5728\u5411\u4e3b\u673aB\u53d1\u9001\u6570\u636e\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4e3b\u673aB\u56e0\u4e3a\u67d0\u4e9b\u539f\u56e0\u5df2\u7ecf\u79bb\u7ebf\u4e86\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/20260325002029437.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260325002029437.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u5f53\u53d1\u9001\u7684\u6570\u636e\u5305\u5230\u8fbe\u4e3b\u673aB\u6240\u5728\u5c40\u57df\u7f51\u7684\u5165\u53e3\u8def\u7531\u5668\u65f6\uff0c\u5165\u53e3\u8def\u7531\u5668\u4e3a\u4e86\u83b7\u5f97\u4e3b\u673aB\u7684MAC\u5730\u5740\uff0c\u4e8e\u662f\u4f1a\u5411\u4e3b\u673aB\u53d1\u9001ARP\u8bf7\u6c42\u5305\uff0c\u4f46\u7531\u4e8e\u4e3b\u673aB\u5df2\u7ecf\u79bb\u7ebf\u4e86\uff0c\u56e0\u6b64\u8def\u7531\u5668\u5728\u591a\u6b21\u53d1\u9001ARP\u8bf7\u6c42\u5305\u800c\u5f97\u4e0d\u5230\u54cd\u5e94\u540e\uff0c\u5c31\u4f1a\u8fd4\u56de\u4e00\u4e2aICMP Destination Unreachable\u7684\u5305\u7ed9\u4e3b\u673aA\uff0c\u6b64\u65f6\u4e3b\u673aA\u5c31\u77e5\u9053\u81ea\u5df1\u53d1\u9001\u7684\u6570\u636e\u65e0\u6cd5\u5230\u8fbe\u4e3b\u673aB\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ICMP\u534f\u8bae\u683c\u5f0f<\/h3>\n\n\n\n<p>ICMP\u534f\u8bae\u683c\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/20260325002017673.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260325002017673.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>ICMP\u5927\u6982\u5206\u4e3a\u4e24\u7c7b\u62a5\u6587\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\u7c7b\u662f\u901a\u77e5\u51fa\u9519\u539f\u56e0\u7684\u3002<\/li>\n\n\n\n<li>\u4e00\u7c7b\u662f\u7528\u4e8e\u8bca\u65ad\u67e5\u8be2\u7684\u3002<\/li>\n<\/ul>\n\n\n\n<p>ICMP\u5305\u5e38\u89c1\u7c7b\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">\u7c7b\u578b<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u5185\u5bb9<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">0<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u56de\u9001\u5e94\u7b54\uff08Echo Reply\uff09<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">3<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u76ee\u6807\u4e0d\u53ef\u8fbe\uff08Destination Unreachable\uff09<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">4<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u539f\u70b9\u6291\u5236\uff08Source Quench\uff09<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">5<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u91cd\u5b9a\u5411\u6216\u6539\u53d8\u8def\u7531\uff08Redirect\uff09<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">8<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u56de\u9001\u8bf7\u6c42\uff08Echo Request\uff09<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">9<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u8def\u7531\u5668\u516c\u544a\uff08Router Advertisement\uff09<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">10<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u8def\u7531\u5668\u8bf7\u6c42\uff08Router Solicitation\uff09<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">11<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u8d85\u65f6\uff08Time Exceeded\uff09<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">17<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u5730\u5740\u5b50\u7f51\u8bf7\u6c42\uff08Address Mask Request\uff09<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">18<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u5730\u5740\u5b50\u7f51\u5e94\u7b54\uff08Address Mask Reply\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">ping\u547d\u4ee4<\/h3>\n\n\n\n<p>ping\u547d\u4ee4\u662f\u57fa\u4e8eICMP\u534f\u8bae\u5b9e\u73b0\u7684\uff0c\u901a\u5e38\u7528\u4e8e\u6d4b\u8bd5\u672c\u5730\u4e3b\u673a\u4e0e\u53e6\u4e00\u53f0\u4e3b\u673a\u4e4b\u95f4\u7684\u901a\u4fe1\u4fe1\u9053\u662f\u5426\u6b63\u5e38\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u4f7f\u7528<code>ping www.baidu.com<\/code>\u547d\u4ee4\uff0c\u6d4b\u8bd5\u672c\u5730\u4e3b\u673a\u4e0e\u767e\u5ea6\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u901a\u4fe1\u4fe1\u9053\u662f\u5426\u6b63\u5e38\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/20260325002056113.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260325002056113.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6ce8\u610f\uff0c\u6b64\u5904ping\u7684\u662f\u767e\u5ea6\u7684\u57df\u540d\uff0c\u8be5\u57df\u540d\u4f1a\u7531DNS\u89e3\u6790\u6210IP\u5730\u5740\u3002<\/li>\n\n\n\n<li>ping\u547d\u4ee4\u4e0d\u4ec5\u80fd\u9a8c\u8bc1\u7f51\u7edc\u7684\u8fde\u901a\u6027\uff0c\u540c\u65f6\u4e5f\u4f1a\u7edf\u8ba1\u54cd\u5e94\u65f6\u95f4\u548cTTL\uff08IP\u5305\u4e2d\u7684Time To Live\uff0c\u751f\u5b58\u65f6\u95f4\uff09\u3002<\/li>\n\n\n\n<li>ping\u547d\u4ee4\u4f1a\u5148\u53d1\u9001\u4e00\u4e2aICMP Echo Request\u7ed9\u5bf9\u7aef\u3002<\/li>\n\n\n\n<li>\u5bf9\u7aef\u63a5\u6536\u5230\u4e4b\u540e\uff0c\u4f1a\u8fd4\u56de\u4e00\u4e2aICMP Echo Reply\u3002<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/20260325002050541.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260325002050541.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u4e2a\u503c\u5f97\u6ce8\u610f\u7684\u5751<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>telnet\u5bf9\u5e94\u7684\u7aef\u53e3\u53f7\u662f23\uff0cssh\u5bf9\u5e94\u7684\u7aef\u53e3\u53f7\u662f22\uff0c\u90a3ping\u5bf9\u5e94\u7684\u7aef\u53e3\u53f7\u662f\u591a\u5c11\uff1f<\/p>\n<\/blockquote>\n\n\n\n<p>\u8fd9\u662f\u95ee\u95ee\u9898\u7684\u4eba\u8bbe\u7684\u4e00\u4e2a\u5708\u5957\uff0cping\u547d\u4ee4\u662f\u57fa\u4e8e\u7f51\u7edc\u5c42\u7684ICMP\u534f\u8bae\uff0c\u800c\u7aef\u53e3\u53f7\u662f\u5c5e\u4e8e\u4f20\u8f93\u5c42\u7684\u5185\u5bb9\uff0c\u56e0\u6b64ICMP\u534f\u8bae\u6839\u672c\u5c31\u4e0d\u5173\u5fc3\u7aef\u53e3\u53f7\u8fd9\u6837\u7684\u4fe1\u606f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/20260325002108611.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260325002108611.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u56e0\u6b64\uff0cping\u547d\u4ee4\u5b9e\u9645\u662f\u7ed5\u8fc7\u4e86\u4f20\u8f93\u5c42\u7684\uff0c\u5728Linux\u5f53\u4e2d\u5b9e\u9645\u4e5f\u6709\u7ed5\u8fc7\u4f20\u8f93\u5c42\u7684\u4e00\u5957\u7f51\u7edc\u7f16\u7a0b\u63a5\u53e3\uff0c\u53eb\u505a\u539f\u751f\u5957\u63a5\u5b57\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">traceroute\u547d\u4ee4<\/h3>\n\n\n\n<p>traceroute\u547d\u4ee4\u4e5f\u662f\u57fa\u4e8eICMP\u534f\u8bae\u5b9e\u73b0\u7684\uff0ctraceroute\u547d\u4ee4\u53ef\u4ee5\u904d\u5386\u6570\u636e\u5305\u4f20\u9001\u5230\u76ee\u6807\u4e3b\u673a\u6240\u7ecf\u8fc7\u7684\u6240\u6709\u8def\u7531\u5668\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u4f7f\u7528<code>traceroute www.baidu.com<\/code>\u547d\u4ee4\uff0c\u904d\u5386\u6570\u636e\u5305\u4f20\u9001\u5230\u767e\u5ea6\u670d\u52a1\u5668\u6240\u7ecf\u8fc7\u7684\u6240\u6709\u8def\u7531\u5668\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/20260325002119119.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260325002119119.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"---\"\/><\/div><\/figure>\n\n\n\n<p>\u539f\u7406\u7b80\u8ff0\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>traceroute\u547d\u4ee4\u5e95\u5c42\u5b9e\u9645\u662f\u901a\u8fc7\u589e\u52a0\u5b58\u6d3b\u65f6\u95f4\uff08TTL\uff09\u503c\u6765\u5b9e\u73b0\u7684\u3002<\/li>\n\n\n\n<li>\u56e0\u4e3a\u6bcf\u5f53\u6570\u636e\u5305\u7ecf\u8fc7\u4e00\u4e2a\u8def\u7531\u5668\uff0c\u5176TTL\u503c\u5c31\u4f1a\u51cf1\uff0c\u5f53TTL\u503c\u51cf\u4e3a0\u65f6\u5bf9\u5e94\u8def\u7531\u8bbe\u5907\u5c31\u4f1a\u5c06\u8be5\u6570\u636e\u5305\u4e22\u5f03\uff0c\u5e76\u4f20\u9001\u4e00\u4e2aICMP TTL\u6570\u636e\u5305\u7ed9\u53d1\u9001\u4e3b\u673a\u3002<\/li>\n\n\n\n<li>\u56e0\u6b64traceroute\u547d\u4ee4\u5e95\u5c42\u53ef\u4ee5\u53d1\u51fa\u591a\u4e2a\u6570\u636e\u5305\uff0c\u5e76\u7ed9\u8fd9\u4e9b\u6570\u636e\u5305\u8bbe\u7f6e\u4e0d\u540c\u7684TTL\u503c\uff0c\u6700\u540e\u8be5\u4e3b\u673a\u5c31\u80fd\u591f\u5f97\u5230\u4e00\u8fde\u4e32\u7684\u6570\u636e\u5305\u8def\u5f84\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">NAT\u6280\u672f<\/h2>\n\n\n\n<p>NAT\uff08Network Address Translation\uff0c\u7f51\u7edc\u5730\u5740\u8f6c\u6362\uff09\u6280\u672f\uff0c\u662f\u89e3\u51b3IP\u5730\u5740\u4e0d\u8db3\u7684\u4e3b\u8981\u624b\u6bb5\uff0c\u5e76\u4e14\u80fd\u591f\u6709\u6548\u5730\u907f\u514d\u6765\u81ea\u7f51\u7edc\u5916\u90e8\u7684\u653b\u51fb\uff0c\u9690\u85cf\u5e76\u4fdd\u62a4\u7f51\u7edc\u5185\u90e8\u7684\u8ba1\u7b97\u673a\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">NAT\u6280\u672f\u80cc\u666f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728\u8fdb\u884c\u5bf9\u5916\u901a\u4fe1\u65f6\uff0cNAT\u80fd\u591f\u5c06\u79c1\u6709IP\u7ecf\u8fc7\u4e00\u7cfb\u5217\u66ff\u6362\u64cd\u4f5c\u6700\u7ec8\u8f6c\u4e3a\u5168\u5c40IP\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0cNAT\u662f\u4e00\u79cd\u5c06\u79c1\u6709IP\u548c\u5168\u5c40IP\u76f8\u4e92\u8f6c\u5316\u7684\u6280\u672f\u65b9\u6cd5\u3002<\/li>\n\n\n\n<li>\u88c5\u6709NAT\u8f6f\u4ef6\u7684\u8def\u7531\u5668\u53eb\u505aNAT\u8def\u7531\u5668\uff0c\u6240\u6709\u4f7f\u7528\u79c1\u6709IP\u7684\u4e3b\u673a\u5728\u548c\u5916\u754c\u901a\u4fe1\u65f6\uff0c\u90fd\u8981\u5728NAT\u8def\u7531\u5668\u4e0a\u5c06\u5176\u79c1\u6709IP\u8f6c\u6362\u6210\u5168\u5c40IP\u3002<\/li>\n\n\n\n<li>\u5f88\u591a\u5b66\u6821\u3001\u5bb6\u5ead\u3001\u516c\u53f8\u5185\u90e8\u6bcf\u4e2a\u7ec8\u7aef\u8bbe\u7f6e\u7684IP\u90fd\u662f\u79c1\u6709IP\uff0c\u800c\u53ea\u5728\u8def\u7531\u5668\u6216\u5fc5\u8981\u7684\u670d\u52a1\u5668\u4e0a\u8bbe\u7f6e\u5168\u5c40IP\u3002<\/li>\n\n\n\n<li>\u5168\u5c40IP\u8981\u6c42\u552f\u4e00\uff0c\u4f46\u662f\u79c1\u6709IP\u4e0d\u9700\u8981\uff0c\u5728\u4e0d\u540c\u7684\u5c40\u57df\u7f51\u4e2d\u51fa\u73b0\u76f8\u540c\u7684\u79c1\u6709IP\u662f\u5b8c\u5168\u4e0d\u5f71\u54cd\u7684\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">NAT IP\u8f6c\u6362\u8fc7\u7a0b<\/h3>\n\n\n\n<p>\u5047\u8bbe\u67d0\u4e2a\u5c40\u57df\u7f51\u5f53\u4e2d\u6709A\u3001B\u3001C\u4e09\u53f0\u4e3b\u673a\uff0c\u5728\u516c\u7f51\u5f53\u4e2d\u6709\u4e00\u53f0\u670d\u52a1\u5668\uff0c\u4ee5\u4e3b\u673aA\u8bbf\u95ee\u516c\u7f51\u4e2d\u7684\u8fd9\u53f0\u670d\u52a1\u5668\u4e3a\u4f8b\uff0c\u6211\u4eec\u6765\u770b\u770b\u6570\u636e\u5305\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2dIP\u5730\u5740\u7684\u8f6c\u6362\u8fc7\u7a0b\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6570\u636e\u5305\u4ece\u5c40\u57df\u7f51\u5230\u516c\u7f51\u7684\u8fc7\u7a0b<\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/20260325002126643.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260325002126643.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u4e3b\u673aA\u5411\u670d\u52a1\u5668\u53d1\u8d77\u6570\u636e\u8bf7\u6c42\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6570\u636e\u5305\u4e2dIP\u5730\u5740\u7684\u8f6c\u6362\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u521a\u5f00\u59cb\uff0c\u8be5\u6570\u636e\u5305\u5f53\u4e2d\u7684\u6e90IP\u5730\u5740\u5c31\u662f\u4e3b\u673aA\u7684\u79c1\u6709IP\u5730\u5740\uff0c\u76ee\u7684IP\u5730\u5740\u5c31\u662f\u670d\u52a1\u5668\u7684\u516c\u7f51IP\u5730\u5740\u3002<\/li>\n\n\n\n<li>\u5f53\u6570\u636e\u5305\u7ecf\u8fc7NAT\u8def\u7531\u5668\u65f6\uff0c\u8def\u7531\u5668\u4f1a\u5c06\u8be5\u6570\u636e\u5305\u7684\u6e90IP\u5730\u5740\u66ff\u6362\u6210\u81ea\u5df1\u7684WAN\u53e3IP\u5730\u5740\uff0c\u6b64\u65f6\u8be5\u6570\u636e\u5305\u7684\u6e90\u548c\u76ee\u7684IP\u5730\u5740\u5c31\u90fd\u662f\u516c\u7f51IP\u4e86\u3002<\/li>\n\n\n\n<li>\u8be5\u6570\u636e\u5305\u5728\u4e92\u8054\u7f51\u4e2d\u7ecf\u8fc7\u5404\u79cd\u8def\u7531\u8f6c\u53d1\uff0c\u6700\u7ec8\u5230\u8fbe\u670d\u52a1\u5668\u4e3b\u673a\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u670d\u52a1\u5668\u6536\u5230\u4e3b\u673aA\u7684\u6570\u636e\u8bf7\u6c42\u5e76\u5904\u7406\u540e\uff0c\u5c31\u4f1a\u5bf9\u4e3b\u673aA\u53d1\u6765\u7684\u8bf7\u6c42\u8fdb\u884c\u54cd\u5e94\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6570\u636e\u5305\u4ece\u516c\u7f51\u5230\u5c40\u57df\u7f51\u7684\u8fc7\u7a0b<\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/20260325002132250.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260325002132250.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u670d\u52a1\u5668\u5411\u4e3b\u673aA\u8fdb\u884c\u54cd\u5e94\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6570\u636e\u5305\u4e2dIP\u5730\u5740\u7684\u8f6c\u6362\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u521a\u5f00\u59cb\uff0c\u8be5\u6570\u636e\u5305\u5f53\u4e2d\u7684\u6e90IP\u5730\u5740\u5c31\u662f\u670d\u52a1\u5668\u7684\u516c\u7f51IP\u5730\u5740\uff0c\u76ee\u7684IP\u5730\u5740\u5c31\u662f\u8def\u7531\u5668\u7684WAN\u53e3IP\u5730\u5740\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u5305\u5728\u4e92\u8054\u7f51\u4e2d\u7ecf\u8fc7\u5404\u79cd\u8def\u7531\u8f6c\u53d1\uff0c\u5230\u8fbe\u4e3b\u673aA\u6240\u5728\u5c40\u57df\u7f51\u7684NAT\u8def\u7531\u5668\uff0c\u6b64\u65f6\u8def\u7531\u5668\u4f1a\u5c06\u8be5\u6570\u636e\u5305\u7684\u76ee\u7684IP\u5730\u5740\u66ff\u6362\u6210\u4e3b\u673aA\u7684\u79c1\u6709IP\u5730\u5740\u3002<\/li>\n\n\n\n<li>\u6700\u7ec8\u8def\u7531\u5668\u5c31\u4f1a\u5c06\u8be5\u6570\u636e\u5305\u8f6c\u53d1\u7ed9\u5c40\u57df\u7f51\u4e2d\u7684\u4e3b\u673aA\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u56e0\u4e3a\u4e3b\u673aA\u5411\u670d\u52a1\u5668\u53d1\u8d77\u6570\u636e\u8bf7\u6c42\u65f6\uff0c\u8be5\u6570\u636e\u5305\u5f53\u4e2d\u7684\u6e90IP\u5730\u5740\u88ab\u66ff\u6362\u6210\u4e86NAT\u8def\u7531\u5668\u7684WAN\u53e3IP\u5730\u5740\uff0c\u76f8\u5f53\u4e8e\u662f\u8be5\u8def\u7531\u5668\u4ee3\u66ff\u4e3b\u673aA\u5411\u670d\u52a1\u5668\u53d1\u8d77\u4e86\u6570\u636e\u8bf7\u6c42\uff0c\u56e0\u6b64\u670d\u52a1\u5668\u53d1\u51fa\u7684\u54cd\u5e94\u6570\u636e\u5305\u7684\u76ee\u7684IP\u5730\u5740\u5e94\u8be5\u662fNAT\u8def\u7531\u5668\u7684WAN\u53e3IP\u5730\u5740\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">NAPT<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5730\u5740\u8f6c\u6362\u8868<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53\u5c40\u57df\u7f51\u5f53\u4e2d\u7684\u4e3b\u673a\u8981\u8bbf\u95ee\u5916\u7f51\u65f6\uff0cNAT\u8def\u7531\u5668\u4f1a\u5c06\u8fd9\u4e9b\u6570\u636e\u5305\u7684\u6e90IP\u5730\u5740\u66ff\u6362\u6210\u81ea\u5df1\u7684WAN\u53e3IP\u5730\u5740\u3002<\/li>\n\n\n\n<li>\u5f53\u5916\u7f51\u53d1\u6765\u54cd\u5e94\u6570\u636e\u65f6\uff0cNAT\u8def\u7531\u5668\u53c8\u4f1a\u5c06\u54cd\u5e94\u6570\u636e\u5305\u7684\u76ee\u7684IP\u5730\u5740\u66ff\u6362\u6210\u5c40\u57df\u7f51\u4e2d\u5bf9\u5e94\u4e3b\u673a\u7684IP\u5730\u5740\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u90a3NAT\u8def\u7531\u5668\u662f\u5982\u4f55\u5224\u65ad\uff0c\u5e94\u8be5\u5c06\u4ece\u5916\u7f51\u6536\u5230\u7684\u54cd\u5e94\u6570\u636e\u5305\u8f6c\u53d1\u7ed9\u5c40\u57df\u7f51\u4e2d\u7684\u54ea\u4e00\u53f0\u4e3b\u673a\u5462\uff1f<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9e\u9645\u5728NAT\u8def\u7531\u5668\u5185\u90e8\uff0c\u6709\u4e00\u5f20\u81ea\u52a8\u751f\u6210\u7684\uff0c\u7528\u4e8e\u5730\u5740\u8f6c\u6362\u7684\u8868\u3002<\/li>\n\n\n\n<li>\u8be5\u8f6c\u6362\u8868\u4e2d\u7ef4\u62a4\u7684\u5c31\u662f\u5c40\u57df\u7f51\u4e2d\u4e3b\u673a\u7684\u79c1\u6709IP\uff0c\u4e0e\u5176\u5bf9\u5e94\u8bbf\u95ee\u7684\u5916\u7f51\u5f53\u4e2d\u7684\u67d0\u4e2a\u516c\u7f51IP\u4e4b\u95f4\u7684\u6620\u5c04\u5173\u7cfb\u3002<\/li>\n\n\n\n<li>\u5c40\u57df\u7f51\u4e2d\u7684\u4e3b\u673a\u7b2c\u4e00\u6b21\u5411\u5916\u7f51\u53d1\u8d77\u6570\u636e\u8bf7\u6c42\u65f6\uff0c\u5c31\u4f1a\u751f\u6210\u8868\u4e2d\u7684\u6620\u5c04\u5173\u7cfb\u3002<\/li>\n\n\n\n<li>\u6bd4\u5982\u5728TCP\u5efa\u7acb\u8fde\u63a5\u65f6\uff0c\u4f1a\u5efa\u7acb\u5bf9\u5e94\u7684\u6620\u5c04\u5173\u7cfb\uff0c\u5728TCP\u65ad\u5f00\u8fde\u63a5\u540e\uff0c\u5c31\u4f1a\u5220\u9664\u5bf9\u5e94\u7684\u6620\u5c04\u5173\u7cfb\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5728\u521a\u624d\u7684\u4f8b\u5b50\u4e2d\uff0c\u4e3b\u673aA\u7b2c\u4e00\u6b21\u5411\u670d\u52a1\u5668\u53d1\u8d77\u6570\u636e\u8bf7\u6c42\u65f6\uff0c\u8def\u7531\u5668\u5c31\u4f1a\u5efa\u7acb\u4ee5\u4e0b\u6620\u5c04\u5173\u7cfb\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/20260325002140350.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260325002140350.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u5f53NAT\u8def\u7531\u5668\u6536\u5230\u670d\u52a1\u5668\u5411\u4e3b\u673aA\u53d1\u6765\u7684\u54cd\u5e94\u6570\u636e\u65f6\uff0c\u5c31\u53ef\u4ee5\u901a\u8fc7\u67e5\u8868\u5f97\u77e5\u8be5\u54cd\u5e94\u6570\u636e\u662f\u53d1\u9001\u7ed9\u5c40\u57df\u7f51\u5f53\u4e2d\u7684\u4e3b\u673aA\u7684\u3002<\/p>\n\n\n\n<p>\u4f46\u5982\u679c\u8f6c\u6362\u8868\u4e2d\u7ef4\u62a4\u7684\u53ea\u662f\u5c40\u57df\u7f51\u4e2d\u4e3b\u673a\u7684\u79c1\u6709IP\uff0c\u4e0e\u5176\u5bf9\u5e94\u8bbf\u95ee\u7684\u5916\u7f51\u5f53\u4e2d\u7684\u67d0\u4e2a\u516c\u7f51IP\u4e4b\u95f4\u7684\u6620\u5c04\u5173\u7cfb\uff0c\u90a3\u4e48\u5c31\u4f1a\u51fa\u73b0\u67d0\u4e9b\u95ee\u9898\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u5c40\u57df\u7f51\u4e2d\u7684\u4e3b\u673aA\u548c\u4e3b\u673aB\u540c\u65f6\u90fd\u5728\u8bbf\u95ee\u8be5\u670d\u52a1\u5668\uff0c\u90a3\u4e48\u6b64\u65f6\u8f6c\u6362\u8868\u4e2d\u5c31\u4f1a\u5efa\u7acb\u5982\u4e0b\u4e24\u5bf9\u6620\u5c04\u5173\u7cfb\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/20260325002148681.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260325002148681.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u6b64\u65f6\u8fd9\u5f20\u8f6c\u6362\u8868\u53ea\u80fd\u4fdd\u8bc1\u4ece\u5de6\u5230\u53f3\u7684\u552f\u4e00\u6027\uff0c\u800c\u4e0d\u80fd\u4fdd\u8bc1\u4ece\u53f3\u5230\u5de6\u7684\u552f\u4e00\u6027\uff0c\u5f53\u670d\u52a1\u5668\u53d1\u6765\u54cd\u5e94\u6570\u636e\u65f6\uff0c\u8be5\u6570\u636e\u5305\u4e2d\u7684\u76ee\u7684IP\u5730\u5740\u90fd\u662f\u8def\u7531\u5668\u7684WAN\u53e3IP\uff0c\u6b64\u65f6NAT\u8def\u7531\u5668\u5c31\u65e0\u6cd5\u5224\u65ad\u8be5\u6570\u636e\u5305\u5e94\u8be5\u8f6c\u53d1\u7ed9\u4e3b\u673aA\u8fd8\u662f\u4e3b\u673aB\uff0c\u6b64\u65f6\u5c31\u9700\u8981\u7528\u5230NAPT\u6280\u672f\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>NAPT<\/p>\n<\/blockquote>\n\n\n\n<p>NAPT\uff08Network Address Port Translation\uff0c\u7f51\u7edc\u5730\u5740\u7aef\u53e3\u8f6c\u6362\uff09\uff0c\u53ef\u4ee5\u5c06\u591a\u4e2a\u5185\u90e8\u5730\u5740\u6620\u5c04\u4e3a\u4e00\u4e2a\u5408\u6cd5\u516c\u7f51\u5730\u5740\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53\u5c40\u57df\u7f51\u4e2d\u7684\u4e3b\u673a\u5411\u5916\u7f51\u53d1\u9001\u6570\u636e\u65f6\uff0c\u8def\u7531\u5668\u4f1a\u5c06\u8be5\u6570\u636e\u5305\u7684\u6e90IP\u5730\u5740\u66ff\u6362\u4e3a\u81ea\u5df1\u7684WAN\u53e3IP\u5730\u5740\uff0c\u5e76\u5efa\u7acb\u8be5\u4e3b\u673a\u79c1\u6709IP\u4e0e\u5176\u5bf9\u5e94\u8bbf\u95ee\u7684\u516c\u7f51IP\u4e4b\u95f4\u7684\u6620\u5c04\u5173\u7cfb\u3002<\/li>\n\n\n\n<li>\u4f46\u5982\u679c\u5c40\u57df\u7f51\u4e2d\u7684\u591a\u53f0\u4e3b\u673a\u540c\u65f6\u8bbf\u95ee\u540c\u4e00\u4e2a\u5916\u7f51\u670d\u52a1\uff0c\u5f53\u8def\u7531\u5668\u6536\u5230\u5916\u7f51\u53d1\u6765\u7684\u54cd\u5e94\u6570\u636e\u65f6\uff0c\u8def\u7531\u5668\u65e0\u6cd5\u5224\u65ad\u8be5\u54cd\u5e94\u6570\u636e\u5e94\u8be5\u8f6c\u53d1\u7ed9\u5c40\u57df\u7f51\u4e2d\u7684\u54ea\u53f0\u4e3b\u673a\uff0c\u56e0\u4e3a\u8be5\u5c40\u57df\u7f51\u4e2d\u6240\u6709\u4e3b\u673a\u7684\u6570\u636e\u5305\u90fd\u7531\u8def\u7531\u5668\u4ee3\u66ff\u53d1\u9001\u4e86\uff0c\u56e0\u6b64\u53d1\u6765\u7684\u54cd\u5e94\u6570\u636e\u5305\u7684\u76ee\u7684IP\u5730\u5740\u90fd\u662f\u8def\u7531\u5668\u7684WAN\u53e3IP\u5730\u5740\u3002<\/li>\n\n\n\n<li>\u4e8e\u662fNAPT\u5728\u5efa\u7acb\u8f6c\u6362\u8868\u7684\u6620\u5c04\u5173\u7cfb\u65f6\uff0c\u9664\u4e86\u5efa\u7acb\u5c40\u57df\u7f51\u4e2d\u79c1\u6709IP\u4e0e\u5176\u5bf9\u5e94\u8bbf\u95ee\u7684\u516c\u7f51IP\u4e4b\u95f4\u7684\u6620\u5c04\u5173\u7cfb\u5916\uff0c\u8fd8\u4f1a\u52a0\u4e0a\u4e00\u4e2a\u7531NAT\u8def\u7531\u5668\u9009\u5b9a\u7684\u7aef\u53e3\u53f7\u3002<\/li>\n\n\n\n<li>\u6b64\u65f6\u5f53\u5c40\u57df\u7f51\u4e2d\u7684\u591a\u53f0\u4e3b\u673a\u540c\u65f6\u8bbf\u95ee\u540c\u4e00\u4e2a\u5916\u7f51\u670d\u52a1\u65f6\uff0c\u867d\u7136\u5916\u7f51\u53d1\u6765\u7684\u54cd\u5e94\u6570\u636e\u7684\u76ee\u7684IP\u5730\u5740\u90fd\u662f\u8def\u7531\u5668\u7684WAN\u53e3IP\uff0c\u4f46\u53d1\u7ed9\u5c40\u57df\u7f51\u4e2d\u4e0d\u540c\u4e3b\u673a\u7684\u54cd\u5e94\u6570\u636e\u5bf9\u5e94\u7684\u76ee\u7684\u7aef\u53e3\u53f7\u662f\u4e0d\u540c\u7684\uff0c\u6b64\u65f6\u8def\u7531\u5668\u5c31\u80fd\u901a\u8fc7IP+Port\u7684\u65b9\u5f0f\u6765\u533a\u5206\u53d1\u7ed9\u4e0d\u540c\u4e3b\u673a\u7684\u6570\u636e\u5305\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6bd4\u5982\u5c40\u57df\u7f51\u4e2d\u7684\u4e3b\u673aA\u548c\u4e3b\u673aB\u90fd\u5728\u8bbf\u95ee\u540c\u4e00\u4e2a\u670d\u52a1\u5668\uff0c\u5e76\u4e14\u5b83\u4eec\u8bbf\u95ee\u670d\u52a1\u5668\u65f6\u91c7\u7528\u7684\u7aef\u53e3\u53f7\u90fd\u662f1025\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5047\u8bbe\u4e3b\u673aA\u53d1\u9001\u7684\u6570\u636e\u5305\u5148\u5230\u8fbe\u8def\u7531\u5668\uff0c\u6b64\u65f6\u8def\u7531\u5668\u5c06\u6570\u636e\u5305\u7684\u6e90IP\u5730\u5740\u66ff\u6362\u6210\u81ea\u5df1\u7684WAN\u53e3IP\u5730\u5740\uff0c\u7531\u4e8e\u8def\u7531\u5668\u7528\u4e8e\u8bbf\u95ee\u8be5\u670d\u52a1\u5668\u76841025\u53f7\u7aef\u53e3\u6ca1\u6709\u88ab\u4f7f\u7528\uff0c\u56e0\u6b64\u8be5\u6570\u636e\u5305\u7684\u6e90\u7aef\u53e3\u53f7\u53ef\u4ee5\u4e0d\u53d8\u3002<\/li>\n\n\n\n<li>\u5f53\u4e3b\u673aB\u53d1\u6765\u7684\u6570\u636e\u5305\u5230\u8fbe\u8def\u7531\u5668\u65f6\uff0c\u8def\u7531\u5668\u540c\u6837\u5c06\u6570\u636e\u5305\u7684\u6e90IP\u5730\u5740\u66ff\u6362\u6210\u81ea\u5df1\u7684WAN\u53e3IP\u5730\u5740\uff0c\u4f46\u6b64\u65f6\u8def\u7531\u5668\u7528\u4e8e\u8bbf\u95ee\u8be5\u670d\u52a1\u5668\u76841025\u53f7\u7aef\u53e3\u5df2\u7ecf\u88ab\u4e3b\u673aA\u4f7f\u7528\u4e86\uff0c\u56e0\u6b64\u8def\u7531\u5668\u4f1a\u91cd\u65b0\u9009\u5b9a\u4e00\u4e2a\u7aef\u53e3\u53f7\u5bf9\u6570\u636e\u5305\u7684\u6e90\u7aef\u53e3\u53f7\u8fdb\u884c\u66ff\u6362\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6b64\u65f6\u8f6c\u6362\u8868\u4e2d\u5c31\u4f1a\u5efa\u7acb\u5982\u4e0b\u4e24\u961f\u6620\u5c04\u5173\u7cfb\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/20260325002206327.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260325002206327.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u6b64\u65f6\u8fd9\u5f20\u8f6c\u6362\u8868\u65e2\u80fd\u4fdd\u8bc1\u4ece\u5de6\u5230\u53f3\u7684\u552f\u4e00\u6027\uff0c\u4e5f\u80fd\u4fdd\u8bc1\u4ece\u53f3\u5230\u5de6\u7684\u552f\u4e00\u6027\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53\u670d\u52a1\u5668\u53d1\u6765\u7684\u54cd\u5e94\u6570\u636e\u5230\u8fbe\u8def\u7531\u5668\u65f6\uff0c\u867d\u7136\u670d\u52a1\u5668\u53d1\u7ed9\u4e3b\u673aA\u548c\u4e3b\u673aB\u7684\u6570\u636e\u5305\u5bf9\u5e94\u7684\u76ee\u7684IP\u5730\u5740\u662f\u4e00\u6837\u7684\u3002<\/li>\n\n\n\n<li>\u4f46\u8def\u7531\u5668\u662f\u7528\u81ea\u5df1\u76841025\u53f7\u7aef\u53e3\u4ee3\u66ff\u4e3b\u673aA\u8fdb\u884c\u6570\u636e\u8bf7\u6c42\u7684\uff0c\u800c\u7528\u7684\u662f1026\u53f7\u7aef\u53e3\u4ee3\u66ff\u4e3b\u673aB\u8fdb\u884c\u6570\u636e\u8bf7\u6c42\u7684\u3002<\/li>\n\n\n\n<li>\u56e0\u6b64\u73b0\u5728\u8def\u7531\u5668\u53ef\u4ee5\u7ee7\u7eed\u6839\u636e\u6570\u636e\u5305\u7684\u6e90\u7aef\u53e3\u53f7\uff0c\u6765\u5224\u65ad\u5e94\u8be5\u5c06\u8be5\u6570\u636e\u5305\u8f6c\u53d1\u7ed9\u4e3b\u673aA\u8fd8\u662f\u4e3b\u673aB\uff0c\u8fdb\u884c\u5bf9\u6570\u636e\u5305\u4e2d\u7684\u76ee\u7684IP\u5730\u5740\u548c\u76ee\u7684\u7aef\u53e3\u53f7\u8fdb\u884c\u66ff\u6362\uff0c\u7136\u540e\u8f6c\u53d1\u7ed9\u5c40\u57df\u7f51\u5185\u5bf9\u5e94\u7684\u4e3b\u673a\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u8c08\u8c08\u8def\u7531\u5668<\/p>\n<\/blockquote>\n\n\n\n<p>\u8def\u7531\u5668\u662f\u5de5\u4f5c\u5728\u7f51\u7edc\u5c42\u7684\u4e00\u4e2a\u8bbe\u5907\uff0c\u8d1f\u8f7d\u5c06\u6570\u636e\u5305\u4ece\u4e00\u4e2a\u7f51\u7edc\u8f6c\u53d1\u5230\u53e6\u4e00\u4e2a\u7f51\u7edc\uff0c\u4f46\u4e0d\u80fd\u4fa0\u4e49\u7684\u8ba4\u4e3a\u8def\u7531\u5668\u53ea\u80fd\u5de5\u4f5c\u5728\u7f51\u7edc\u5c42\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>NAT\u8def\u7531\u5668\u5728\u8fdb\u884c\u6570\u636e\u8f6c\u53d1\u65f6\uff0c\u4e0d\u4ec5\u6709\u80fd\u529b\u66ff\u6362\u6570\u636e\u5305\u7684\u6e90\u548c\u76ee\u7684IP\u5730\u5740\uff0c\u800c\u4e14\u5728\u5fc5\u8981\u7684\u60c5\u51b5\u4e0b\u8fd8\u53ef\u80fd\u4f1a\u66ff\u6362\u6570\u636e\u5305\u7684\u6e90\u548c\u76ee\u7684\u7aef\u53e3\u53f7\uff0c\u800c\u7aef\u53e3\u53f7\u5b9e\u9645\u662f\u4f20\u8f93\u5c42\u7684\u6982\u5ff5\u3002<\/li>\n\n\n\n<li>\u4e3a\u4e86\u5bf9IP\u5730\u5740\u8fdb\u884c\u52a8\u6001\u7ba1\u7406\uff0c\u5927\u90e8\u5206\u8def\u7531\u5668\u90fd\u5e26\u6709DHCP\u529f\u80fd\uff0c\u800cDHCP\u5b9e\u9645\u662f\u5e94\u7528\u5c42\u7684\u4e00\u4e2a\u534f\u8bae\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u56e0\u6b64\u73b0\u5728\u7684\u8def\u7531\u5668\u5176\u5b9e\u5e76\u4e0d\u4ec5\u4ec5\u63d0\u4f9b\u7f51\u7edc\u5c42\u76f8\u5173\u7684\u670d\u52a1\uff0c\u7f51\u7edc\u534f\u8bae\u6808\u4e2d\u7684\u5404\u5c42\u8def\u7531\u5668\u53ef\u80fd\u90fd\u6709\u6d89\u53ca\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">NAT\u6280\u672f\u7684\u7f3a\u9677<\/h3>\n\n\n\n<p>NAT\u6280\u672f\u8fdb\u884c\u79c1\u6709IP\u548c\u516c\u7f51\u4e4b\u95f4\u7684\u66ff\u6362\uff0c\u4e3b\u8981\u5c31\u662f\u4f9d\u8d56NAT\u8def\u7531\u5668\u5f53\u4e2d\u7ef4\u62a4\u7684\u7f51\u7edc\u5730\u5740\u8f6c\u6362\u8868\uff0c\u4f46\u8fd9\u5f20\u8f6c\u6362\u8868\u4e5f\u4f53\u73b0\u51fa\u4e86NAT\u7684\u4e00\u4e9b\u7f3a\u9677\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u65e0\u6cd5\u4eceNAT\u5916\u90e8\u5411\u5185\u90e8\u670d\u52a1\u5668\u5efa\u7acb\u8fde\u63a5\uff0c\u56e0\u4e3a\u5916\u90e8\u65e0\u6cd5\u77e5\u9053\u5185\u90e8\u7684\u79c1\u7f51IP\uff0c\u4e5f\u5c31\u65e0\u6cd5\u4e3b\u52a8\u4e0e\u5185\u90e8\u670d\u52a1\u5668\u5efa\u7acb\u8fde\u63a5\u3002<\/li>\n\n\n\n<li>\u8f6c\u6362\u8868\u7684\u751f\u6210\u548c\u9500\u6bc1\u90fd\u9700\u8981\u989d\u5916\u5f00\u9500\u3002<\/li>\n\n\n\n<li>\u901a\u4fe1\u8fc7\u7a0b\u4e2d\u4e00\u65e6NAT\u8bbe\u5907\u5f02\u5e38\uff0c\u5373\u4f7f\u5b58\u5728\u70ed\u5907\uff0c\u6240\u6709\u7684TCP\u8fde\u63a5\u4e5f\u90fd\u4f1a\u65ad\u5f00\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">NAT\u548c\u4ee3\u7406\u670d\u52a1\u5668<\/h3>\n\n\n\n<p>\u4ee3\u7406\u670d\u52a1\u5668\uff08Proxy Server\uff09\u7684\u529f\u80fd\u5c31\u662f\u4ee3\u7406\u7f51\u7edc\u7528\u6237\u53bb\u53d6\u5f97\u7f51\u7edc\u4fe1\u606f\uff0c\u4ee3\u7406\u670d\u52a1\u5668\u53c8\u5206\u4e3a\u6b63\u5411\u4ee3\u7406\u548c\u53cd\u5411\u4ee3\u7406\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6b63\u5411\u4ee3\u7406<\/p>\n<\/blockquote>\n\n\n\n<p>\u6b63\u5411\u4ee3\u7406\uff0c\u662f\u4e00\u4e2a\u4f4d\u4e8e\u5ba2\u6237\u7aef\u548c\u76ee\u6807\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u670d\u52a1\u5668\uff0c\u5ba2\u6237\u7aef\u5e76\u4e0d\u76f4\u63a5\u8bbf\u95ee\u76ee\u6807\u670d\u52a1\u5668\uff0c\u800c\u662f\u5148\u8bbf\u95ee\u4ee3\u7406\u670d\u52a1\u5668\uff0c\u7531\u4ee3\u7406\u670d\u52a1\u5668\u4ee3\u66ff\u5ba2\u6237\u7aef\u53bb\u8bbf\u95ee\u5bf9\u5e94\u7684\u76ee\u6807\u670d\u52a1\u5668\uff0c\u5e76\u5c06\u76ee\u6807\u670d\u52a1\u5668\u7684\u54cd\u5e94\u7ed3\u679c\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/20260325003020937.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260325003020937.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u6bd4\u5982\u516c\u53f8\u5185\u90e8\u4e00\u822c\u90fd\u4f1a\u6709\u81ea\u5df1\u7684\u670d\u52a1\u5668\uff0c\u5f53\u6211\u4eec\u4f7f\u7528\u516c\u53f8\u5185\u7f51\u4e0a\u7f51\u65f6\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6211\u4eec\u5bf9\u5916\u7f51\u53d1\u8d77\u7684\u6570\u636e\u8bf7\u6c42\uff0c\u9996\u5148\u4f1a\u8f6c\u53d1\u5230\u516c\u53f8\u7684\u8fd9\u53f0\u670d\u52a1\u5668\u4e0a\uff0c\u7136\u540e\u7531\u516c\u53f8\u7684\u8fd9\u53f0\u670d\u52a1\u5668\u4ee3\u66ff\u4f60\u5bf9\u5916\u7f51\u8fdb\u884c\u8bbf\u95ee\u3002<\/li>\n\n\n\n<li>\u5f53\u516c\u53f8\u7684\u670d\u52a1\u5668\u6536\u5230\u5bf9\u5e94\u5916\u7f51\u7684\u54cd\u5e94\u6570\u636e\u540e\uff0c\u518d\u7531\u516c\u53f8\u7684\u8fd9\u53f0\u670d\u52a1\u5668\u5c06\u6570\u636e\u8f6c\u53d1\u7ed9\u4f60\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6b63\u5411\u4ee3\u7406\u7684\u597d\u5904\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6b63\u5411\u4ee3\u7406\u6700\u5927\u7684\u4e00\u4e2a\u597d\u5904\u5c31\u662f\u53ef\u4ee5\u52a0\u901f\u8d44\u6e90\u8bbf\u95ee\u3002<\/li>\n\n\n\n<li>\u6bd4\u5982\u516c\u53f8\u4e2d\u5927\u91cf\u5458\u5de5\u90fd\u8981\u8bbf\u95ee\u5916\u7f51\u7684\u540c\u4e00\u4e2a\u8d44\u6e90\uff0c\u90a3\u4e48\u6b63\u5411\u4ee3\u7406\u670d\u52a1\u5668\u5c31\u53ef\u4ee5\u5c06\u5bf9\u5e94\u7684\u8d44\u6e90\u7f13\u5b58\u5230\u672c\u5730\uff0c\u6b64\u65f6\u5f53\u5176\u4ed6\u4eba\u8981\u8bbf\u95ee\u8be5\u8d44\u6e90\u65f6\uff0c\u76f4\u63a5\u5728\u6b63\u5411\u4ee3\u7406\u670d\u52a1\u5668\u5c31\u53ef\u4ee5\u83b7\u53d6\uff0c\u800c\u4e0d\u9700\u8981\u518d\u6b21\u8fdb\u884c\u5916\u7f51\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u53cd\u5411\u4ee3\u7406<\/p>\n<\/blockquote>\n\n\n\n<p>\u53cd\u5411\u4ee3\u7406\uff0c\u4e5f\u662f\u4e00\u4e2a\u4f4d\u4e8e\u5ba2\u6237\u7aef\u548c\u76ee\u6807\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u670d\u52a1\u5668\uff0c\u5bf9\u4e8e\u5ba2\u6237\u7aef\u800c\u8a00\uff0c\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u5c31\u76f8\u5f53\u4e8e\u76ee\u6807\u670d\u52a1\u5668\uff0c\u7528\u6237\u4e0d\u9700\u8981\u77e5\u9053\u76ee\u6807\u670d\u52a1\u5668\u7684\u5730\u5740\uff0c\u7528\u6237\u53ea\u9700\u8981\u8bbf\u95ee\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u5c31\u53ef\u4ee5\u83b7\u5f97\u76ee\u6807\u670d\u52a1\u5668\u63d0\u4f9b\u7684\u670d\u52a1\u3002<\/p>\n\n\n\n<p>\u53cd\u5411\u4ee3\u7406\uff0c\u4e5f\u662f\u4e00\u4e2a\u4f4d\u4e8e\u5ba2\u6237\u7aef\u548c\u76ee\u6807\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u670d\u52a1\u5668\uff0c\u5ba2\u6237\u7aef\u76f4\u63a5\u5411\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u53d1\u8d77\u6570\u636e\u8bf7\u6c42\uff0c\u7136\u540e\u518d\u7531\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u5c06\u5ba2\u6237\u7aef\u7684\u6570\u636e\u8bf7\u6c42\u8f6c\u53d1\u7ed9\u771f\u6b63\u7684\u76ee\u6807\u670d\u52a1\u5668\u8fdb\u884c\u5904\u7406\uff0c\u6570\u636e\u5904\u7406\u5b8c\u6bd5\u540e\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u518d\u5c06\u6570\u636e\u7ed3\u679c\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/20260325003030181.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260325003030181.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/div><\/figure>\n\n\n\n<p>\u6bd4\u5982\u57df\u540d<code>www.baidu.com<\/code>\u5bf9\u5e94\u7684\u670d\u52a1\u5668\u5b9e\u9645\u5c31\u662f\u4e00\u4e2a\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u767e\u5ea6\u5185\u90e8\u5b9e\u9645\u5e76\u4e0d\u662f\u53ea\u6709\u4e00\u53f0\u670d\u52a1\u5668\uff0c\u4f46\u4e0d\u540c\u5730\u533a\u7684\u4eba\u4eec\u90fd\u53ef\u4ee5\u901a\u8fc7\u8bbf\u95ee<code>www.baidu.com<\/code>\u4eab\u53d7\u5230\u767e\u5ea6\u63d0\u4f9b\u7684\u670d\u52a1\uff0c\u5b9e\u9645\u6211\u4eec\u8bbf\u95ee\u7684\u5c31\u662f\u767e\u5ea6\u7684\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u3002<\/li>\n\n\n\n<li>\u5f53\u8fd9\u53f0\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u6536\u5230\u5ba2\u6237\u7aef\u7684\u6570\u636e\u8bf7\u6c42\u540e\uff0c\u5c31\u4f1a\u5c06\u6211\u4eec\u7684\u6570\u636e\u8bf7\u6c42\u8f6c\u53d1\u7ed9\u767e\u5ea6\u5185\u90e8\u7684\u67d0\u53f0\u670d\u52a1\u5668\u8fdb\u884c\u6570\u636e\u5904\u7406\uff0c\u7136\u540e\u518d\u5c06\u6570\u636e\u5904\u7406\u7684\u7ed3\u679c\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u53cd\u5411\u4ee3\u7406\u7684\u597d\u5904\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53cd\u5411\u4ee3\u7406\u53ef\u4ee5\u8d77\u5230\u8d1f\u8f7d\u5747\u8861\u7684\u4f5c\u7528\u3002\u6bd4\u5982\u4e0d\u8bbe\u7f6e\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\uff0c\u90a3\u4e48\u7528\u6237\u5728\u8bbf\u95ee\u767e\u5ea6\u65f6\uff0c\u5c31\u4f1a\u968f\u673a\u8bbf\u95ee\u5230\u767e\u5ea6\u5185\u90e8\u7684\u67d0\u53f0\u670d\u52a1\u5668\uff0c\u6b64\u65f6\u5c31\u53ef\u80fd\u5bfc\u81f4\u67d0\u4e9b\u670d\u52a1\u5668\u538b\u529b\u592a\u5927\uff0c\u800c\u67d0\u4e9b\u670d\u52a1\u5668\u5374\u5904\u4e8e\u95f2\u7f6e\u72b6\u6001\u3002\u800c\u8bbe\u7f6e\u4e86\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u540e\uff0c\u6211\u4eec\u5c31\u80fd\u591f\u901a\u8fc7\u67d0\u4e9b\u65b9\u6cd5\u8ba9\u7528\u6237\u7684\u6570\u636e\u8bf7\u6c42\u8f83\u4e3a\u5e73\u5747\u7684\u843d\u5230\u6bcf\u53f0\u670d\u52a1\u5668\u4e0a\u3002<\/li>\n\n\n\n<li>\u53cd\u5411\u4ee3\u7406\u8fd8\u80fd\u8d77\u5230\u5b89\u5168\u9632\u62a4\u7684\u4f5c\u7528\u3002\u6709\u4e86\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u540e\uff0c\u6211\u4eec\u4e0d\u9700\u8981\u76f4\u63a5\u5c06\u63d0\u4f9b\u670d\u52a1\u7684\u670d\u52a1\u5668\u5bf9\u5e94\u7684\u4fe1\u606f\u66b4\u9732\u51fa\u53bb\uff0c\u6b64\u5916\uff0c\u5f53\u7531\u975e\u6cd5\u8bf7\u6c42\u53d1\u9001\u5230\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u65f6\uff0c\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u5c31\u76f8\u5f53\u4e8e\u4e00\u5c42\u8f6f\u4ef6\u5c4f\u969c\uff0c\u53ef\u4ee5\u5728\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u5f53\u4e2d\u90e8\u7f72\u4e00\u4e9b\u9632\u62a4\u63aa\u65bd\uff0c\u8ba9\u8fd9\u4e9b\u975e\u6cd5\u8bf7\u6c42\u5728\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u8fd9\u91cc\u5c31\u88ab\u8fc7\u6ee4\u6389\uff0c\u800c\u4e0d\u4f1a\u5f71\u54cd\u5185\u90e8\u5b9e\u9645\u63d0\u4f9b\u670d\u52a1\u7684\u670d\u52a1\u5668\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4ee3\u7406\u670d\u52a1\u5668\u7684\u4e3b\u8981\u5de5\u4f5c\u53ea\u662f\u5bf9\u6570\u636e\u8fdb\u884c\u8f6c\u53d1\uff0c\u56e0\u6b64\u4ee3\u7406\u670d\u52a1\u5668\u5904\u7406\u6570\u636e\u7684\u538b\u529b\u4e0d\u4f1a\u7279\u522b\u5927\uff0c\u5e76\u4e14\u4ee3\u7406\u670d\u52a1\u5668\u4e5f\u53ef\u4ee5\u6709\u591a\u4e2a\uff0c\u56e0\u6b64\u4e0d\u5fc5\u62c5\u5fc3\u4ee3\u7406\u670d\u52a1\u5668\u8fc7\u8f7d\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6b63\u5411\u4ee3\u7406\u548c\u53cd\u5411\u4ee3\u7406\u7684\u5f02\u540c<\/p>\n<\/blockquote>\n\n\n\n<p>\u6b63\u5411\u4ee3\u7406\u548c\u53cd\u5411\u4ee3\u7406\u7684\u76f8\u540c\u70b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6b63\u5411\u4ee3\u7406\u670d\u52a1\u5668\u548c\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u90fd\u662f\u4f4d\u4e8e\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u3002<\/li>\n\n\n\n<li>\u6b63\u5411\u4ee3\u7406\u670d\u52a1\u5668\u548c\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\u7684\u4e3b\u8981\u5de5\u4f5c\uff0c\u90fd\u662f\u628a\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u8f6c\u53d1\u7ed9\u670d\u52a1\u5668\uff0c\u518d\u628a\u670d\u52a1\u5668\u7684\u54cd\u5e94\u8f6c\u53d1\u7ed9\u5ba2\u6237\u7aef\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6b63\u5411\u4ee3\u7406\u548c\u53cd\u5411\u4ee3\u7406\u7684\u4e0d\u540c\u70b9\uff1a<\/p>\n\n\n\n<ul 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class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>NAT\u548c\u4ee3\u7406\u670d\u52a1\u5668\u7684\u533a\u522b<\/p>\n<\/blockquote>\n\n\n\n<p>NAT\u548c\u4ee3\u7406\u670d\u52a1\u5668\u90fd\u662f\u4ee3\u66ff\u6211\u4eec\u5411\u670d\u52a1\u5668\u53d1\u8d77\u6570\u636e\u8bf7\u6c42\u7684\uff0c\u4f46\u5b83\u4eec\u6709\u5982\u4e0b\u533a\u522b\uff1a<\/p>\n\n\n\n<ul 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