{"id":1900,"date":"2023-05-30T01:22:48","date_gmt":"2023-05-29T17:22:48","guid":{"rendered":"http:\/\/www.yueguangzu.net\/?p=1900"},"modified":"2023-05-30T01:22:48","modified_gmt":"2023-05-29T17:22:48","slug":"symmetric%e7%bd%91%e7%bb%9c%e5%9c%b0%e5%9d%80%e8%bd%ac%e6%8d%a2%ef%bc%88nat%ef%bc%89%ef%bc%9a%e7%89%b9%e6%80%a7%e3%80%81%e4%bc%98%e7%82%b9%e4%b8%8e%e6%8c%91%e6%88%98","status":"publish","type":"post","link":"http:\/\/www.yueguangzu.net\/?p=1900","title":{"rendered":"Symmetric\u7f51\u7edc\u5730\u5740\u8f6c\u6362\uff08NAT\uff09\uff1a\u7279\u6027\u3001\u4f18\u70b9\u4e0e\u6311\u6218"},"content":{"rendered":"<p><strong>\u6458\u8981<\/strong><\/p>\n<p>\u7f51\u7edc\u5730\u5740\u8f6c\u6362\uff08NAT\uff09\u662f\u4e00\u79cd\u5728\u8ba1\u7b97\u673a\u7f51\u7edc\u4e2d\u5e7f\u6cdb\u4f7f\u7528\u7684\u6280\u672f\uff0c\u5b83\u5141\u8bb8\u4e00\u4e2aIP\u5730\u5740\u7a7a\u95f4\u6620\u5c04\u5230\u53e6\u4e00\u4e2aIP\u5730\u5740\u7a7a\u95f4\u3002\u672c\u6587\u5c06\u91cd\u70b9\u63a2\u8ba8Symmetric NAT\u7684\u7279\u6027\uff0c\u5305\u62ec\u5176\u5de5\u4f5c\u539f\u7406\u3001\u4f18\u70b9\u3001\u7f3a\u70b9\u4ee5\u53ca\u5728\u5b9e\u9645\u7f51\u7edc\u73af\u5883\u4e2d\u7684\u5e94\u7528\u3002\u6211\u4eec\u8fd8\u5c06\u63a2\u8ba8\u5982\u4f55\u5728Symmetric NAT\u4e2d\u5b9e\u73b0P2P\uff08\u70b9\u5bf9\u70b9\uff09\u901a\u4fe1\uff0c\u4ee5\u53ca\u4f7f\u7528\u5982STUN\uff08Session Traversal Utilities for NAT\uff09\u548cTURN\uff08Traversal Using Relays around NAT\uff09\u7b49\u5de5\u5177\u6765\u89e3\u51b3Symmetric NAT\u5e26\u6765\u7684\u6311\u6218\u3002<\/p>\n<p><strong>\u5173\u952e\u8bcd\uff1a<\/strong> Symmetric NAT\uff0c\u7f51\u7edc\u5730\u5740\u8f6c\u6362\uff0cP2P\u901a\u4fe1\uff0cSTUN\uff0cTURN<\/p>\n<p><strong>1. \u5f15\u8a00<\/strong><\/p>\n<p>\u7f51\u7edc\u5730\u5740\u8f6c\u6362\uff08NAT\uff09\u662f\u4e00\u79cd\u5728\u8ba1\u7b97\u673a\u7f51\u7edc\u4e2d\u5e7f\u6cdb\u4f7f\u7528\u7684\u6280\u672f\uff0c\u5b83\u5141\u8bb8\u4e00\u4e2aIP\u5730\u5740\u7a7a\u95f4\u6620\u5c04\u5230\u53e6\u4e00\u4e2aIP\u5730\u5740\u7a7a\u95f4\u3002NAT\u7684\u4e3b\u8981\u76ee\u7684\u662f\u89e3\u51b3IPv4\u5730\u5740\u8017\u5c3d\u7684\u95ee\u9898\uff0c\u540c\u65f6\u4e5f\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u5355\u7684\u7f51\u7edc\u5b89\u5168\u89e3\u51b3\u65b9\u6848\u3002NAT\u6709\u51e0\u79cd\u4e0d\u540c\u7684\u7c7b\u578b\uff0c\u5305\u62ec\u9759\u6001NAT\uff08Static NAT\uff09\u3001\u52a8\u6001NAT\uff08Dynamic NAT\uff09\u3001\u7aef\u53e3\u5730\u5740\u8f6c\u6362\uff08PAT\uff0c\u4e5f\u79f0\u4e3aNAT Overload\uff09\u4ee5\u53caSymmetric NAT\u3002\u8fd9\u4e9bNAT\u7c7b\u578b\u7684\u4e3b\u8981\u533a\u522b\u5728\u4e8e\u5b83\u4eec\u5982\u4f55\u5904\u7406\u4f20\u5165\u548c\u4f20\u51fa\u7684\u7f51\u7edc\u8fde\u63a5\u3002<\/p>\n<p><strong>2. Symmetric NAT\u7684\u7279\u6027<\/strong><\/p>\n<p>Symmetric NAT\u662fNAT\u7c7b\u578b\u4e2d\u6700\u4e25\u683c\u7684\u4e00\u79cd\u3002\u5728Symmetric NAT\u4e2d\uff0c\u6240\u6709\u6765\u81ea\u540c\u4e00\u5185\u90e8IP\u5730\u5740\u548c\u7aef\u53e3\u7684\u8bf7\u6c42\uff0c\u5230\u7279\u5b9a\u7684\u76ee\u6807IP\u5730\u5740\u548c\u7aef\u53e3\uff0c\u90fd\u88ab\u6620\u5c04\u5230\u540c\u4e00\u5916\u90e8IP\u5730\u5740\u548c\u7aef\u53e3\u3002\u5982\u679c\u540c\u4e00\u5185\u90e8\u4e3b\u673a\u5c1d\u8bd5\u901a\u8fc7\u4e0d\u540c\u7684\u6e90\u7aef\u53e3\u6216\u8005\u5411\u4e0d\u540c\u7684\u76ee\u6807\u53d1\u9001\u8bf7\u6c42\uff0c\u90a3\u4e48\u4f1a\u88ab\u6620\u5c04\u5230\u4e0d\u540c\u7684\u5916\u90e8\u7aef\u53e3\u3002\u8fd9\u79cd\u7c7b\u578b\u7684NAT\u63d0\u4f9b\u4e86\u5f88\u9ad8\u7684\u5b89\u5168\u6027\uff0c\u56e0\u4e3a\u53ea\u6709\u901a\u8fc7\u4e86\u5185\u90e8\u4e3b\u673a\u7684\u51fa\u7ad9\u8fde\u63a5\uff0c\u624d\u80fd\u5efa\u7acb\u5165\u7ad9\u8fde\u63a5\u3002<\/p>\n<p><strong>3. Symmetric NAT\u7684\u4f18\u70b9\u4e0e\u6311\u6218<\/strong><\/p>\n<p>\u5c3d\u7ba1Symmetric NAT\u63d0\u4f9b\u4e86\u5f88\u9ad8\u7684\u5b89\u5168\u6027\uff0c\u4f46\u4e5f\u5e26\u6765\u4e86\u4e00\u4e9b\u6311\u6218\uff0c\u7279\u522b\u662f\u5bf9P2P\u901a\u4fe1\u7684\u652f\u6301\u3002\u5728P2P\u901a\u4fe1\u4e2d\uff0c\u4e24\u4e2a\u6216\u591a\u4e2a\u8282\u70b9\u9700\u8981\u76f4\u63a5\u76f8\u4e92\u901a\u4fe1\uff0c\u800c\u4e0d\u901a\u8fc7\u4e2d\u95f4\u670d\u52a1\u5668\u3002\u4f46\u5728Symmetric NAT\u4e2d\uff0c\u7531\u4e8e\u5165\u7ad9\u8fde\u63a5\u5fc5\u987b\u4e0e\u4e00\u4e2a\u5df2\u5b58\u5728\u7684\u51fa\u7ad9\u8fde\u63a5\u76f8\u5173\u8054\uff0c\u6240\u4ee5P2P\u901a\u4fe1\u53d8\u5f97\u56f0\u96be\u3002<\/p>\n<div class=\"flex-1 overflow-hidden\">\n<div class=\"react-scroll-to-bottom--css-yurmm-79elbk h-full dark:bg-gray-800\">\n<div class=\"react-scroll-to-bottom--css-yurmm-1n7m0yu\">\n<div class=\"flex flex-col text-sm dark:bg-gray-800\">\n<div class=\"group w-full text-gray-800 dark:text-gray-100 border-b border-black\/10 dark:border-gray-900\/50 bg-gray-50 dark:bg-[#444654]\">\n<div class=\"flex p-4 gap-4 text-base md:gap-6 md:max-w-2xl lg:max-w-xl xl:max-w-3xl md:py-6 lg:px-0 m-auto\">\n<div class=\"relative flex w-[calc(100%-50px)] flex-col gap-1 md:gap-3 lg:w-[calc(100%-115px)]\">\n<div class=\"flex flex-grow flex-col gap-3\">\n<div class=\"min-h-[20px] flex flex-col items-start gap-4 whitespace-pre-wrap break-words\">\n<div class=\"markdown prose w-full break-words dark:prose-invert light\">\n<p><strong>4. \u5728Symmetric NAT\u4e2d\u5b9e\u73b0P2P\u901a\u4fe1<\/strong><\/p>\n<p>\u5c3d\u7ba1\u5b58\u5728\u8fd9\u4e9b\u6311\u6218\uff0c\u4f46\u662f\u8fd8\u662f\u6709\u4e00\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u5728Symmetric NAT\u4e2d\u5b9e\u73b0P2P\u901a\u4fe1\u3002\u4e00\u79cd\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u4f7f\u7528STUN\uff08Session Traversal Utilities for NAT\uff09\u670d\u52a1\u5668\u3002STUN\u670d\u52a1\u5668\u5141\u8bb8NAT\u5ba2\u6237\u7aef\u53d1\u73b0\u81ea\u5df1\u7684\u516c\u7f51\u5730\u5740\uff0c\u4ee5\u53ca\u5b83\u662f\u5426\u4f4d\u4e8eSymmetric NAT\u4e4b\u540e\u3002\u7136\u540e\uff0cNAT\u5ba2\u6237\u7aef\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e9b\u4fe1\u606f\u6765\u8bbe\u7f6eP2P\u8fde\u63a5\u3002<\/p>\n<p>\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528TURN\uff08Traversal Using Relays around NAT\uff09\u670d\u52a1\u5668\u3002\u5982\u679cSTUN\u5931\u8d25\uff0c\u90a3\u4e48TURN\u53ef\u4ee5\u4f5c\u4e3a\u5907\u7528\u65b9\u6848\u3002TURN\u670d\u52a1\u5668\u5141\u8bb8NAT\u5ba2\u6237\u7aef\u901a\u8fc7\u5b83\u6765\u4e2d\u7ee7\u6570\u636e\uff0c\u4ece\u800c\u7ed5\u8fc7NAT\u7684\u9650\u5236\u3002<\/p>\n<p><strong>5. \u7ed3\u8bba<\/strong><\/p>\n<p>\u603b\u7684\u6765\u8bf4\uff0cSymmetric NAT\u63d0\u4f9b\u4e86\u5f88\u9ad8\u7684\u5b89\u5168\u6027\uff0c\u4f46\u4e5f\u5e26\u6765\u4e86\u4e00\u4e9b\u6311\u6218\uff0c\u7279\u522b\u662f\u5bf9P2P\u901a\u4fe1\u7684\u652f\u6301\u3002\u7136\u800c\uff0c\u901a\u8fc7\u4f7f\u7528\u5982STUN\u548cTURN\u7b49\u5de5\u5177\uff0c\u8fd9\u4e9b\u6311\u6218\u53ef\u4ee5\u5f97\u5230\u89e3\u51b3\u3002\u5728\u672a\u6765\u7684\u7814\u7a76\u4e2d\uff0c\u6211\u4eec\u671f\u5f85\u770b\u5230\u66f4\u591a\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u4ee5\u4fbf\u66f4\u597d\u5730\u5229\u7528Symmetric NAT\u7684\u4f18\u70b9\uff0c\u540c\u65f6\u514b\u670d\u5176\u5e26\u6765\u7684\u6311\u6218\u3002<\/p>\n<p><strong>\u53c2\u8003\u6587\u732e<\/strong><\/p>\n<p>[1] GeeksforGeeks. (2021). Types of Network Address Translation (NAT). Retrieved from <a href=\"https:\/\/www.geeksforgeeks.org\/types-of-network-address-translation-nat\/\" target=\"_new\" rel=\"noopener\">https:\/\/www.geeksforgeeks.org\/types-of-network-address-translation-nat\/<\/a><\/p>\n<p>[2] Tutorialspoint. (2021). What are the different types of NAT in computer networks. Retrieved from <a href=\"https:\/\/www.tutorialspoint.com\/what-are-the-different-types-of-nat-in-computer-networks\" target=\"_new\" rel=\"noopener\">https:\/\/www.tutorialspoint.com\/what-are-the-different-types-of-nat-in-computer-networks<\/a><\/p>\n<p>[3] Network Kings. (2022). What is NAT and its Types? Best Explained &#8211; 2023. Retrieved from <a href=\"https:\/\/www.nwkings.com\/what-is-nat\/\" target=\"_new\" rel=\"noopener\">https:\/\/www.nwkings.com\/what-is-nat\/<\/a><\/p>\n<p>[4] OmniSecu.com. (n.d.). Different types of NAT &#8211; Static NAT, Dynamic NAT and PAT. Retrieved from <a href=\"https:\/\/www.omnisecu.com\/static-nat-dynamic-nat-and-pat\" target=\"_new\" rel=\"noopener\">https:\/\/www.omnisecu.com\/static-nat-dynamic-nat-and-pat<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"absolute bottom-0 left-0 w-full border-t md:border-t-0 dark:border-white\/20 md:border-transparent md:dark:border-transparent md:bg-vert-light-gradient bg-white dark:bg-gray-800 md:!bg-transparent dark:md:bg-vert-dark-gradient pt-2\">\n<form class=\"stretch mx-2 flex flex-row gap-3 last:mb-2 md:mx-4 md:last:mb-6 lg:mx-auto lg:max-w-2xl xl:max-w-3xl\">\n<div class=\"relative flex h-full flex-1 items-stretch md:flex-col\">\n<div class=\"\">\n<div class=\"h-full flex ml-1 md:w-full md:m-auto md:mb-2 gap-0 md:gap-2 justify-center\"><\/div>\n<\/div>\n<\/div>\n<\/form>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u6458\u8981 \u7f51\u7edc\u5730\u5740\u8f6c\u6362\uff08NAT\uff09\u662f\u4e00\u79cd\u5728\u8ba1\u7b97\u673a\u7f51\u7edc\u4e2d\u5e7f\u6cdb\u4f7f\u7528\u7684\u6280\u672f\uff0c\u5b83\u5141\u8bb8\u4e00\u4e2aIP\u5730\u5740\u7a7a\u95f4\u6620\u5c04\u5230\u53e6\u4e00\u4e2aIP\u5730\u5740\u7a7a\u95f4\u3002\u672c\u6587\u5c06\u91cd\u70b9\u63a2\u8ba8Symmetric NAT\u7684\u7279\u6027\uff0c\u5305\u62ec\u5176\u5de5\u4f5c\u539f\u7406\u3001\u4f18\u70b9\u3001\u7f3a\u70b9\u4ee5\u53ca\u5728\u5b9e\u9645\u7f51\u7edc\u73af\u5883\u4e2d\u7684\u5e94\u7528\u3002\u6211\u4eec\u8fd8\u5c06\u63a2\u8ba8\u5982\u4f55\u5728Symm [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[54],"tags":[],"_links":{"self":[{"href":"http:\/\/www.yueguangzu.net\/index.php?rest_route=\/wp\/v2\/posts\/1900"}],"collection":[{"href":"http:\/\/www.yueguangzu.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.yueguangzu.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.yueguangzu.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.yueguangzu.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1900"}],"version-history":[{"count":2,"href":"http:\/\/www.yueguangzu.net\/index.php?rest_route=\/wp\/v2\/posts\/1900\/revisions"}],"predecessor-version":[{"id":1902,"href":"http:\/\/www.yueguangzu.net\/index.php?rest_route=\/wp\/v2\/posts\/1900\/revisions\/1902"}],"wp:attachment":[{"href":"http:\/\/www.yueguangzu.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1900"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yueguangzu.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1900"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yueguangzu.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1900"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}