{"id":105,"date":"2023-11-03T17:25:55","date_gmt":"2023-11-03T09:25:55","guid":{"rendered":"https:\/\/www.lightnode.cn\/knowledge\/?p=105"},"modified":"2026-07-27T11:22:53","modified_gmt":"2026-07-27T03:22:53","slug":"%e5%a6%82%e4%bd%95%e9%80%9a%e8%bf%87%e7%ab%af%e5%8f%a3%e8%bd%ac%e5%8f%91%e5%ae%9e%e7%8e%b0%e7%bd%91%e7%bb%9c%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96%ef%bc%8c%e5%87%8f%e5%b0%91%e4%b8%a2%e5%8c%85%e5%b9%b6","status":"publish","type":"post","link":"https:\/\/www.ygcloud.com\/knowledge\/105\/","title":{"rendered":"\u7aef\u53e3\u8f6c\u53d1\u662f\u4ec0\u4e48\uff1fNAT\u3001SSH\u96a7\u9053\u4e0e\u5b89\u5168\u914d\u7f6e"},"content":{"rendered":"<section data-seo-update=\"20260724-105\">\n<p><strong>\u5148\u8bf4\u7ed3\u8bba\uff1a<\/strong>\u7aef\u53e3\u8f6c\u53d1\u662f\u628a\u4e00\u4e2a\u76d1\u542c\u5730\u5740\/\u7aef\u53e3\u6536\u5230\u7684\u8fde\u63a5\u9001\u5230\u53e6\u4e00\u4e2a\u76ee\u6807\uff0c\u5e38\u7528\u4e8e NAT \u540e\u53d1\u5e03\u81ea\u6709\u670d\u52a1\u3001SSH \u4e34\u65f6\u8bbf\u95ee\u3001\u53cd\u5411\u4ee3\u7406\u3001\u8fc1\u79fb\u5207\u6d41\u548c\u53d7\u63a7\u8fd0\u7ef4\u3002\u5b83\u4e0d\u4f1a\u81ea\u52a8\u964d\u4f4e\u5ef6\u8fdf\u6216\u4e22\u5305\uff1b\u589e\u52a0\u4e2d\u95f4\u8282\u70b9\u901a\u5e38\u4f1a\u589e\u52a0\u4e00\u6bb5\u5904\u7406\u548c\u7f51\u7edc\u5f00\u9500\uff0c\u53ea\u6709\u65b0\u8def\u5f84\u7ed5\u5f00\u539f\u6709\u6545\u969c\u3001\u62e5\u585e\u6216\u8bbf\u95ee\u9650\u5236\u65f6\uff0c\u6574\u4f53\u4f53\u9a8c\u624d\u53ef\u80fd\u6539\u5584\u3002\u4efb\u4f55\u8f6c\u53d1\u90fd\u5e94\u9650\u5b9a\u4e3a\u81ea\u6709\u6216\u83b7\u6388\u6743\u7cfb\u7edf\uff0c\u5e76\u914d\u7f6e\u8ba4\u8bc1\u3001\u52a0\u5bc6\u3001\u6765\u6e90\u9650\u5236\u3001\u65e5\u5fd7\u548c\u9000\u51fa\u8ba1\u5212\u3002<\/p>\n<figure>\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-106\" src=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2023\/11\/8c3eb1352074ff5-768x583.png\" alt=\"\u7aef\u53e3\u8f6c\u53d1\u5ba2\u6237\u7aef\u8f6c\u53d1\u8282\u70b9\u76ee\u6807\u670d\u52a1\u5173\u7cfb\" width=\"600\" height=\"455\" srcset=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2023\/11\/8c3eb1352074ff5-768x583.png 768w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2023\/11\/8c3eb1352074ff5-300x228.png 300w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2023\/11\/8c3eb1352074ff5.png 981w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption>\u7aef\u53e3\u8f6c\u53d1\u589e\u52a0\u4e86\u4e00\u8df3\uff0c\u662f\u5426\u6709\u4ef7\u503c\u53d6\u51b3\u4e8e\u4e1a\u52a1\u4e0e\u8def\u5f84\u8bc1\u636e\u3002<\/figcaption><\/figure>\n<h2>\u7aef\u53e3\u8f6c\u53d1\u3001\u53cd\u5411\u4ee3\u7406\u548c\u8d1f\u8f7d\u5747\u8861\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u65b9\u5f0f<\/th>\n<th>\u5de5\u4f5c\u5c42\u6b21<\/th>\n<th>\u9002\u5408<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>NAT\/\u7aef\u53e3\u6620\u5c04<\/td>\n<td>IP\/TCP\/UDP<\/td>\n<td>\u628a\u516c\u7f51\u7aef\u53e3\u6620\u5c04\u5230\u79c1\u7f51\u81ea\u6709\u670d\u52a1<\/td>\n<\/tr>\n<tr>\n<td>SSH \u672c\u5730\/\u8fdc\u7a0b\u8f6c\u53d1<\/td>\n<td>\u52a0\u5bc6 TCP \u96a7\u9053<\/td>\n<td>\u4e34\u65f6\u8fd0\u7ef4\u3001\u6d4b\u8bd5\u548c\u53d7\u63a7\u8bbf\u95ee<\/td>\n<\/tr>\n<tr>\n<td>\u56db\u5c42\u4ee3\u7406<\/td>\n<td>TCP\/UDP<\/td>\n<td>\u6570\u636e\u5e93\u7f51\u5173\u3001\u6e38\u620f\u3001\u975e HTTP \u534f\u8bae<\/td>\n<\/tr>\n<tr>\n<td>\u4e03\u5c42\u53cd\u5411\u4ee3\u7406<\/td>\n<td>HTTP\/HTTPS<\/td>\n<td>\u57df\u540d\u3001TLS\u3001\u8def\u7531\u3001\u7f13\u5b58\u3001\u9274\u6743<\/td>\n<\/tr>\n<tr>\n<td>\u8d1f\u8f7d\u5747\u8861<\/td>\n<td>\u56db\u5c42\u6216\u4e03\u5c42<\/td>\n<td>\u5065\u5eb7\u68c0\u67e5\u540e\u5206\u53d1\u5230\u591a\u4e2a\u540e\u7aef<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5355\u6761\u7aef\u53e3\u8f6c\u53d1\u89c4\u5219\u4e0d\u4f1a\u81ea\u52a8\u63d0\u4f9b\u5065\u5eb7\u68c0\u67e5\u3001\u6545\u969c\u8f6c\u79fb\u3001TLS\u3001\u9650\u901f\u6216\u591a\u540e\u7aef\u8d1f\u8f7d\u5747\u8861\u3002<\/p>\n<h2>\u54ea\u4e9b\u4e1a\u52a1\u9002\u5408\uff1f<\/h2>\n<ul>\n<li>\u8def\u7531\u5668\/NAT \u540e\u53d1\u5e03\u4e00\u4e2a\u660e\u786e\u6388\u6743\u7684\u5185\u90e8 Web \u670d\u52a1\uff1b<\/li>\n<li>\u8fc1\u79fb\u671f\u95f4\u628a\u65e7\u5165\u53e3\u4e34\u65f6\u8f6c\u53d1\u5230\u65b0\u540e\u7aef\uff1b<\/li>\n<li>\u901a\u8fc7 SSH \u5b89\u5168\u8bbf\u95ee\u4ec5\u76d1\u542c\u672c\u673a\u7684\u6570\u636e\u5e93\u6216\u540e\u53f0\uff1b<\/li>\n<li>\u4e3a Web \u6e90\u7ad9\u914d\u7f6e\u53cd\u5411\u4ee3\u7406\u548c TLS \u5165\u53e3\uff1b<\/li>\n<li>\u5c06\u591a\u4e2a\u81ea\u6709\u670d\u52a1\u6309\u57df\u540d\u6216\u8def\u5f84\u8def\u7531\uff1b<\/li>\n<li>\u6545\u969c\u6392\u67e5\u65f6\u5efa\u7acb\u77ed\u671f\u3001\u53ef\u5ba1\u8ba1\u7684\u6d4b\u8bd5\u901a\u9053\u3002<\/li>\n<\/ul>\n<p>\u4e0d\u9002\u5408\u628a\u672a\u77e5\u6d41\u91cf\u8f6c\u53d1\u7ed9\u7b2c\u4e09\u65b9\u3001\u5f00\u653e\u533f\u540d\u4ee3\u7406\u3001\u7ed5\u8fc7\u8bbf\u95ee\u63a7\u5236\u6216\u957f\u671f\u7528\u4e34\u65f6\u96a7\u9053\u627f\u8f7d\u751f\u4ea7\u6838\u5fc3\u4e1a\u52a1\u3002<\/p>\n<figure>\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-107\" src=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2023\/11\/c4ca4238a0b9238.png\" alt=\"SSH\u672c\u5730\u7aef\u53e3\u8f6c\u53d1\u8bbf\u95ee\u81ea\u6709\u6570\u636e\u5e93\" width=\"475\" height=\"211\" srcset=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2023\/11\/c4ca4238a0b9238.png 475w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2023\/11\/c4ca4238a0b9238-300x133.png 300w\" sizes=\"auto, (max-width: 475px) 100vw, 475px\" \/><figcaption>\u4e34\u65f6\u8fd0\u7ef4\u4f18\u5148\u7ed1\u5b9a\u56de\u73af\u5730\u5740\uff0c\u4e0d\u628a\u6570\u636e\u5e93\u76f4\u63a5\u66b4\u9732\u7ed9\u516c\u7f51\u3002<\/figcaption><\/figure>\n<h2>SSH \u672c\u5730\u7aef\u53e3\u8f6c\u53d1\u793a\u4f8b<\/h2>\n<p>\u4ece\u672c\u673a\u901a\u8fc7\u5821\u5792\u673a\u8bbf\u95ee\u53ea\u6709\u5821\u5792\u673a\u80fd\u8fde\u63a5\u7684\u81ea\u6709\u6570\u636e\u5e93\uff1a<\/p>\n<pre><code>ssh -N \\\n  -L 127.0.0.1:15432:db.internal.example:5432 \\\n  ops@bastion.example.com\n<\/code><\/pre>\n<p>\u968f\u540e\u672c\u673a\u5e94\u7528\u8fde\u63a5 <code>127.0.0.1:15432<\/code>\u3002\u7ed1\u5b9a 127.0.0.1 \u53ef\u4ee5\u907f\u514d\u5176\u4ed6\u8bbe\u5907\u76f4\u63a5\u4f7f\u7528\u8be5\u5165\u53e3\u3002\u53ea\u5141\u8bb8\u4e13\u7528\u4f4e\u6743\u9650 SSH \u8d26\u53f7\u4e0e\u5bc6\u94a5\uff0c\u5e76\u5728\u670d\u52a1\u7aef\u7528 <code>PermitOpen<\/code>\u9650\u5236\u53ef\u8f6c\u53d1\u76ee\u6807\u3002OpenSSH \u5b98\u65b9\u624b\u518c\u4e5f\u63d0\u4f9b\u8f6c\u53d1\u4e0e <code>GatewayPorts<\/code>\u7b49\u63a7\u5236\uff1b\u4e0d\u8981\u4e3a\u4e86\u201c\u8ba9\u5916\u90e8\u80fd\u8fde\u201d\u968f\u610f\u7ed1\u5b9a <code>0.0.0.0<\/code>\u3002<\/p>\n<h2>SSH \u8fdc\u7a0b\u7aef\u53e3\u8f6c\u53d1\u4f55\u65f6\u4f7f\u7528\uff1f<\/h2>\n<p>\u8fdc\u7a0b\u8f6c\u53d1\u53ef\u8ba9\u8fdc\u7aef\u4e3b\u673a\u4e0a\u7684\u4e00\u4e2a\u7aef\u53e3\u56de\u8fde\u5230\u672c\u5730\u6216\u79c1\u7f51\u670d\u52a1\uff0c\u9002\u5408\u77ed\u671f\u6f14\u793a\u548c\u8fd0\u7ef4\u3002\u751f\u4ea7\u4f7f\u7528\u524d\u5fc5\u987b\u786e\u8ba4\uff1a<\/p>\n<ul>\n<li>\u8fdc\u7aef\u76d1\u542c\u9ed8\u8ba4\u53ea\u5728\u56de\u73af\u5730\u5740\uff0c\u4e0d\u6253\u5f00 GatewayPorts\uff1b<\/li>\n<li>\u8d26\u53f7\u7528 <code>PermitListen<\/code>\u3001<code>PermitOpen<\/code>\u9650\u5236\uff1b<\/li>\n<li>\u8f6c\u53d1\u8fdb\u7a0b\u6709\u5b58\u6d3b\u76d1\u63a7\u548c\u5230\u671f\u65f6\u95f4\uff1b<\/li>\n<li>\u76ee\u6807\u5e94\u7528\u4ecd\u9700\u8ba4\u8bc1\u548c TLS\uff1b<\/li>\n<li>\u65e5\u5fd7\u80fd\u8ffd\u8e2a\u8c01\u5728\u4f55\u65f6\u5efa\u7acb\u901a\u9053\u3002<\/li>\n<\/ul>\n<h2>Web \u4e1a\u52a1\u4e3a\u4ec0\u4e48\u66f4\u9002\u5408\u53cd\u5411\u4ee3\u7406\uff1f<\/h2>\n<p>Nginx\u3001HAProxy \u6216\u6258\u7ba1\u8d1f\u8f7d\u5747\u8861\u53ef\u4ee5\u6309\u57df\u540d\/\u8def\u5f84\u8f6c\u53d1\uff0c\u5e76\u5904\u7406 TLS\u3001\u5065\u5eb7\u68c0\u67e5\u3001\u8d85\u65f6\u3001\u5934\u90e8\u548c\u9650\u901f\u3002\u914d\u7f6e\u524d\u8981\u660e\u786e\u771f\u5b9e\u5ba2\u6237\u7aef IP \u5982\u4f55\u4f20\u9012\uff0c\u53ea\u4fe1\u4efb\u53d7\u63a7\u4ee3\u7406\u6765\u6e90\uff0c\u907f\u514d\u4efb\u4f55\u4eba\u4f2a\u9020 <code>X-Forwarded-For<\/code>\u3002WebSocket\u3001\u4e0a\u4f20\u3001\u5927\u6587\u4ef6\u548c\u6d41\u5f0f\u54cd\u5e94\u4e5f\u8981\u5206\u522b\u6d4b\u8bd5\u3002<\/p>\n<h2>\u7aef\u53e3\u8f6c\u53d1\u80fd\u4e0d\u80fd\u4f18\u5316\u7f51\u7edc\uff1f<\/h2>\n<p>\u5148\u6d4b\u4e09\u6bb5\uff1a<\/p>\n<ol>\n<li>\u5ba2\u6237\u7aef \u2192 \u8f6c\u53d1\u8282\u70b9\uff1b<\/li>\n<li>\u8f6c\u53d1\u8282\u70b9 \u2192 \u76ee\u6807\u670d\u52a1\uff1b<\/li>\n<li>\u5ba2\u6237\u7aef \u2192 \u76ee\u6807\u670d\u52a1\u76f4\u8fde\u57fa\u7ebf\u3002<\/li>\n<\/ol>\n<p>\u8bb0\u5f55\u6bcf\u6bb5 Ping\/MTR\u3001TCP\u3001TLS\u3001\u5e94\u7528 P95\u3001\u7ec8\u70b9\u4e22\u5305\u548c\u9519\u8bef\u7387\u3002\u53ea\u6709\u201c\u524d\u4e24\u6bb5\u5408\u8ba1\u7684\u771f\u5b9e\u4e1a\u52a1\u4f53\u9a8c\u201d\u6301\u7eed\u4f18\u4e8e\u76f4\u8fde\uff0c\u5e76\u4e14\u6210\u672c\u3001\u5b89\u5168\u4e0e\u53ef\u7528\u6027\u53ef\u63a5\u53d7\uff0c\u8f6c\u53d1\u624d\u6709\u610f\u4e49\u3002\u4e00\u6b21\u6700\u4f4e Ping \u4e0d\u8db3\u4ee5\u8bc1\u660e\u3002<\/p>\n<p>\u5982\u679c\u95ee\u9898\u5728\u76ee\u6807\u4e3b\u673a CPU\u3001\u6570\u636e\u5e93\u6216\u78c1\u76d8\uff0c\u589e\u52a0\u4e2d\u95f4\u8282\u70b9\u4e0d\u4f1a\u4fee\u590d\uff1b\u5982\u679c\u8f6c\u53d1\u8282\u70b9\u5e26\u5bbd\u5c0f\u6216\u62e5\u585e\uff0c\u53cd\u800c\u4f1a\u6210\u4e3a\u65b0\u74f6\u9888\u3002\u8bca\u65ad\u65b9\u6cd5\u89c1<a href=\"https:\/\/www.ygcloud.com\/knowledge\/1216\/\">\u6d77\u5916\u4e91\u670d\u52a1\u5668\u5ef6\u8fdf\u6392\u67e5<\/a>\u3002<\/p>\n<h2>\u4e0a\u7ebf\u524d\u5b89\u5168\u6e05\u5355<\/h2>\n<ol>\n<li>\u786e\u8ba4\u6e90\u3001\u8f6c\u53d1\u8282\u70b9\u548c\u76ee\u6807\u5168\u90e8\u5c5e\u4e8e\u81ea\u5df1\u6216\u5df2\u6709\u4e66\u9762\u6388\u6743\uff1b<\/li>\n<li>\u53ea\u5f00\u653e\u660e\u786e TCP\/UDP \u7aef\u53e3\uff0c\u5e76\u9650\u5236\u6765\u6e90\uff1b<\/li>\n<li>\u8f6c\u53d1\u8fdb\u7a0b\u4f7f\u7528\u4f4e\u6743\u9650\u8d26\u53f7\uff1b<\/li>\n<li>\u7aef\u5230\u7aef\u4f7f\u7528 SSH\/TLS \u7b49\u52a0\u5bc6\uff0c\u4e0d\u628a\u5185\u7f51\u660e\u6587\u76f4\u63a5\u66b4\u9732\uff1b<\/li>\n<li>\u76ee\u6807\u670d\u52a1\u4ecd\u4fdd\u7559\u8ba4\u8bc1\u4e0e\u6700\u5c0f\u6743\u9650\uff1b<\/li>\n<li>\u914d\u7f6e\u8fde\u63a5\u6570\u3001\u901f\u7387\u3001\u7a7a\u95f2\u8d85\u65f6\u548c\u65e5\u5fd7\u8f6e\u8f6c\uff1b<\/li>\n<li>\u76d1\u63a7\u7aef\u53e3\u3001\u8fdb\u7a0b\u3001\u5e26\u5bbd\u3001\u9519\u8bef\u548c\u5f02\u5e38\u6765\u6e90\uff1b<\/li>\n<li>\u8bb0\u5f55\u914d\u7f6e\u3001\u8d1f\u8d23\u4eba\u3001\u5230\u671f\u65e5\u671f\u548c\u56de\u9000\u547d\u4ee4\uff1b<\/li>\n<li>\u68c0\u67e5\u4e91\u670d\u52a1\u5546\u7aef\u53e3\u3001\u6d41\u91cf\u548c\u53ef\u63a5\u53d7\u4f7f\u7528\u6761\u6b3e\uff1b<\/li>\n<li>\u53d1\u751f\u6ee5\u7528\u6216\u5f02\u5e38\u6d41\u91cf\u65f6\u53ef\u4ee5\u7acb\u5373\u5173\u95ed\u3002<\/li>\n<\/ol>\n<p>\u53ef\u7ed3\u5408<a href=\"https:\/\/www.ygcloud.com\/knowledge\/279\/\">VPS \u5e38\u7528\u7aef\u53e3\u4e0e\u5f00\u653e\u539f\u5219<\/a>\u3001<a href=\"https:\/\/www.ygcloud.com\/knowledge\/1434\/\">\u5b89\u5168\u7ec4\u8bbe\u7f6e<\/a>\u548c<a href=\"https:\/\/www.ygcloud.com\/knowledge\/888\/\">VPS \u5b89\u5168\u68c0\u67e5<\/a>\u6267\u884c\u3002<\/p>\n<h2>\u4e3a\u4ec0\u4e48\u5220\u9664\u65e7\u6587\u7684\u4e00\u952e\u811a\u672c\u4e0e\u4ee3\u7406\u6b65\u9aa4\uff1f<\/h2>\n<p>\u65e7\u5185\u5bb9\u4ece\u672a\u6838\u9a8c\u7684 GitHub \u5730\u5740\u4e0b\u8f7d root \u811a\u672c\uff0c\u4f7f\u7528\u5df2\u505c\u6b62\u7ef4\u62a4\u7684 CentOS 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