{"id":10227,"date":"2023-09-17T10:50:37","date_gmt":"2023-09-17T10:50:37","guid":{"rendered":"https:\/\/symlexvpn.com\/?p=10227"},"modified":"2025-06-02T11:16:28","modified_gmt":"2025-06-02T11:16:28","slug":"what-is-a-nat-firewall-and-how-does-it-work-with-vpn","status":"publish","type":"post","link":"https:\/\/symlexvpn.com\/zh\/what-is-a-nat-firewall-and-how-does-it-work-with-vpn\/","title":{"rendered":"\u4ec0\u4e48\u662f VPN \u4e0a\u7684 NAT \u9632\u706b\u5899\uff1f\u5b8c\u6574\u6307\u5357"},"content":{"rendered":"<p>NAT \u9632\u706b\u5899\u4f7f\u7528\u8def\u7531\u5668\u4f5c\u4e3a\u9632\u706b\u5899\u6765\u4fdd\u62a4\u4e13\u7528\u7f51\u7edc\u3002\u4ec5\u5f53\u4e13\u7528\u7f51\u7edc\u4e0a\u7684\u8bbe\u5907\u8bf7\u6c42\u65f6\uff0c\u5b83\u624d\u5141\u8bb8\u4e92\u8054\u7f51\u6d41\u91cf\u3002\u6b64\u5916\uff0c\u5b83\u8fd8\u901a\u8fc7\u4e22\u5f03\u4e0d\u9700\u8981\u7684\u8bf7\u6c42\u548c\u6570\u636e\u5305\u6765\u9632\u6b62\u4e0e\u6f5c\u5728\u6076\u610f\u4e92\u8054\u7f51\u8bbe\u5907\u7684\u901a\u4fe1\u3002<\/p>\n\n\n\n<p>NAT \u4ee3\u8868\u7f51\u7edc\u5730\u5740\u8f6c\u6362\uff0c\u5b83\u91cd\u5199\u6570\u636e\u5305\u7684\u6807\u5934\uff0c\u4ee5\u4fbf\u5b83\u4eec\u53ef\u4ee5\u5728\u7f51\u7edc\u4e4b\u95f4\u6b63\u786e\u8def\u7531\u3002 NAT \u9632\u706b\u5899\u4fdd\u62a4\u7f51\u7edc\u8eab\u4efd\uff0c\u4e0d\u4f1a\u5411 Internet \u663e\u793a\u5185\u90e8\u7f51\u7edc IP \u5730\u5740\u3002<\/p>\n\n\n\n<p>VPN \u4e0a\u7684 NAT \u9632\u706b\u5899\u4e0d\u9700\u8981\u4efb\u4f55\u989d\u5916\u7684\u914d\u7f6e\uff0c\u56e0\u4e3a\u5b83\u4e0e\u670d\u52a1\u5668\u96c6\u6210\u3002\u4f46\u662f\uff0c\u8bf7\u786e\u4fdd\u60a8\u7684 VPN \u63d0\u4f9b\u5546\u652f\u6301 NAT \u9632\u706b\u5899\u5e76\u5177\u6709\u6b64\u529f\u80fd\u3002\u60a8\u53ef\u4ee5\u5728 VPN \u5e94\u7528\u7a0b\u5e8f\u8bbe\u7f6e\u4e2d\u6253\u5f00\u6216\u5173\u95ed NAT \u9632\u706b\u5899\uff0c\u6216\u8d2d\u4e70\u5b83\u4eec\u4f5c\u4e3a\u5347\u7ea7\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528 NAT \u9632\u706b\u5899\u7684 VPN \u4e3a\u7528\u6237\u63d0\u4f9b\u552f\u4e00\u7684\u79c1\u6709 IP \u5730\u5740\uff0c\u5c06 NAT \u9632\u706b\u5899\u7684\u6240\u6709\u4f18\u52bf\u6269\u5c55\u5230\u60a8\u7684 VPN \u8fde\u63a5\u3002\u8ba9\u6211\u4eec\u66f4\u6df1\u5165\u5730\u4e86\u89e3\u4ec0\u4e48\u662f NAT \u9632\u706b\u5899\u4ee5\u53ca\u5b83\u5982\u4f55\u8fd0\u884c\u4ee5\u63d0\u4f9b\u6700\u7ec8\u7684\u7f51\u7edc\u5b89\u5168\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-yoast-seo-table-of-contents yoast-table-of-contents\"><h2>\u76ee\u5f55<\/h2><ul><li><a href=\"#h-how-does-nat-firewall-work\" data-level=\"2\">NAT \u9632\u706b\u5899\u5982\u4f55\u5de5\u4f5c\uff1f<\/a><\/li><li><a href=\"#h-which-nat-type-is-best\" data-level=\"2\">\u54ea\u79cd NAT \u7c7b\u578b\u6700\u597d\uff1f<\/a><\/li><li><a href=\"#h-does-nat-affect-internet-speed\" data-level=\"2\">NAT \u4f1a\u5f71\u54cd\u7f51\u901f\u5417\uff1f<\/a><\/li><li><a href=\"#h-what-are-the-advantages-of-a-nat-firewall\" data-level=\"2\">NAT \u9632\u706b\u5899\u6709\u54ea\u4e9b\u4f18\u70b9\uff1f<\/a><\/li><li><a href=\"#h-what-are-the-disadvantages-of-a-nat-firewall\" data-level=\"2\">NAT \u9632\u706b\u5899\u6709\u54ea\u4e9b\u7f3a\u70b9\uff1f<\/a><\/li><li><a href=\"#h-how-to-enable-nat-firewall-on-vpn\" data-level=\"2\">\u5982\u4f55\u5728VPN\u4e0a\u542f\u7528NAT\u9632\u706b\u5899\uff1f<\/a><\/li><li><a href=\"#h-faqs\" data-level=\"2\">\u5e38\u89c1\u95ee\u9898\u89e3\u7b54<\/a><\/li><li><a href=\"#h-conclusion\" data-level=\"2\">\u7ed3\u8bba<\/a><\/li><\/ul><\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-does-nat-firewall-work\"><strong>NAT \u9632\u706b\u5899\u5982\u4f55\u5de5\u4f5c\uff1f<\/strong><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<p>NAt\uff08\u7f51\u7edc\u5730\u5740\u8f6c\u6362\uff09\u901a\u8fc7\u5c06 IP \u5730\u5740\u8f6c\u6362\u4e3a\u516c\u5171 IP \u5730\u5740\u5728\u7f51\u7edc\u8def\u7531\u5668\u4e0a\u8fd0\u884c\u3002 NAT \u9632\u706b\u5899\u7684\u4e3b\u8981\u76ee\u7684\u662f\u9632\u6b62\u7f51\u7edc\u4e0a\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u548c\u6f5c\u5728\u5a01\u80c1\u3002&nbsp;<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"420\" src=\"https:\/\/symlexvpn.com\/wp-content\/uploads\/2023\/09\/nat-firewall-works-with-vpn.png\" alt=\"Understanding NAT Firewall\" class=\"wp-image-10230\" srcset=\"https:\/\/symlexvpn.com\/wp-content\/uploads\/2023\/09\/nat-firewall-works-with-vpn.png 800w, https:\/\/symlexvpn.com\/wp-content\/uploads\/2023\/09\/nat-firewall-works-with-vpn-300x158.png 300w, https:\/\/symlexvpn.com\/wp-content\/uploads\/2023\/09\/nat-firewall-works-with-vpn-18x9.png 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p class=\"has-text-align-center\">\u6765\u6e90\uff1a <a href=\"https:\/\/community.fs.com\/blog\/what-is-nat-and-what-are-the-benefits-of-nat-firewalls.html\">FS Community<\/a><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>NAT \u9632\u706b\u5899\u786e\u4fdd\u53ea\u6709\u7ecf\u8fc7\u9a8c\u8bc1\u548c\u8bf7\u6c42\u7684\u6d41\u91cf\u624d\u80fd\u901a\u8fc7\u7f51\u7edc\u4e4b\u95f4\u3002\u56e0\u6b64\uff0c\u5b83\u53ef\u4ee5\u4fdd\u62a4\u8bbe\u5907\u514d\u4e8e\u63a5\u89e6\u7f51\u7edc\u4e0a\u7684\u5783\u573e\u90ae\u4ef6\u6216\u6709\u98ce\u9669\u7684\u8bbe\u5907\u3002\u6b64\u5916\uff0c\u5b83\u901a\u8fc7\u4e0d\u5c06\u5185\u90e8\u516c\u5171 IP \u5730\u5740\u66b4\u9732\u5230\u4e92\u8054\u7f51\u6765\u4fdd\u62a4\u7f51\u7edc\u7684\u8eab\u4efd\u3002<\/p>\n\n\n\n<p><strong>\u6982\u62ec<\/strong>\uff1aNAT \u9632\u706b\u5899\u5c06\u7528\u4e8e\u4e0e Internet \u901a\u4fe1\u7684\u5404\u4e2a\u8bbe\u5907 IP \u5730\u5740\u8f6c\u6362\u4e3a\u5355\u4e2a\u516c\u5171 IP \u5730\u5740\u3002\u5b83\u5c4f\u853d\u5355\u4e2a\u8bbe\u5907\u5730\u5740\u5e76\u9632\u6b62\u672a\u7ecf\u6388\u6743\u7684\u7f51\u7edc\u6d41\u91cf\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-types-of-nat-firewalls\"><strong>NAT \u9632\u706b\u5899\u7684\u7c7b\u578b<\/strong><\/h3>\n\n\n\n<p>\u51e0\u79cd\u7c7b\u578b\u7684 NAT \u9632\u706b\u5899\u5404\u6709\u4f18\u7f3a\u70b9\u3002\u4ee5\u4e0b\u662f\u4e0d\u540c\u7c7b\u578b NAT \u7684\u4e00\u4e9b\u793a\u4f8b\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u9759\u6001NAT\uff1a <\/strong>\u9759\u6001 NAT \u662f\u6307\u79f0\u4e3a\u5e73\u8861 NAT \u7684\u4e00\u5bf9\u4e00\u9632\u706b\u5899\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5e94\u8be5\u6709\u76f8\u540c\u6570\u91cf\u7684 IP \u5730\u5740\u6765\u8f6c\u6362\u672c\u5730\u7f51\u7edc\u548c\u5916\u90e8\u7f51\u7edc\u3002\u5f53\u9700\u8981\u901a\u8fc7\u516c\u5171 IP \u5730\u5740\u4ece Internet \u8bbf\u95ee\u4e13\u7528\u7f51\u7edc\u8bbe\u5907\u65f6\uff0c\u901a\u5e38\u4f1a\u4f7f\u7528\u5b83\u3002<br><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u52a8\u6001NAT\uff1a <\/strong>\u4e0e\u9759\u6001 NAT \u4e0d\u540c\uff0c\u5b83\u4f7f\u7528\u516c\u5171 IP \u5730\u5740\u6c60\u5c06\u79c1\u6709 IP \u5730\u5740\u6620\u5c04\u5230\u516c\u5171 IP \u5730\u5740\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u591a\u4e2a\u4e2a\u4eba IP \u5730\u5740\u52a8\u6001\u6620\u5c04\u5230\u516c\u5171 IP \u5730\u5740\u6c60\u3002\u4f7f\u7528\u52a8\u6001 NAT \u66f4\u6709\u6548\uff0c\u56e0\u4e3a\u516c\u5171 IP \u5f88\u6602\u8d35\u3002<br><\/li>\n\n\n\n<li><strong>\u8d85\u8f7d NAT\uff1a <\/strong>\u91cd\u8f7d NAT\uff0c\u4e5f\u79f0\u4e3a\u7aef\u53e3\u5730\u5740\u8f6c\u6362\uff0c\u662f\u4e00\u79cd\u5728\u4e13\u7528\u7f51\u7edc\u4e0a\u5171\u4eab\u5355\u4e2a IP \u5730\u5740\u7684\u65b9\u6cd5\u3002\u5b83\u901a\u8fc7\u4f7f\u7528\u4e0d\u540c\u7684\u7aef\u53e3\u53f7\u6765\u533a\u5206\u8bbe\u5907\u8fdb\u884c\u64cd\u4f5c\u3002\u5b83\u901a\u5e38\u7528\u4e8e Wi-Fi \u7b49\u5bb6\u5ead\u7f51\u7edc\uff0c\u5176\u4e2d\u591a\u4e2a\u8bbe\u5907\u4f7f\u7528\u76f8\u540c\u7684 IP \u5730\u5740\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u6982\u62ec<\/strong>\uff1a\u9759\u6001NAT\u4e3a\u7279\u5b9a\u8bbe\u5907\u63d0\u4f9b\u56fa\u5b9a\u7684\u6620\u5c04\uff0c\u800c\u52a8\u6001NAT\u548cPAT\u5141\u8bb8\u66f4\u7075\u6d3b\u5730\u4f7f\u7528IP\u5730\u5740\u548c\u7aef\u53e3\u53f7\u3002&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-which-nat-type-is-best\"><strong>\u54ea\u79cd NAT \u7c7b\u578b\u6700\u597d\uff1f<\/strong><\/h2>\n\n\n\n<p>\u5f00\u653e NAT\uff0c\u79f0\u4e3a\u7c7b\u578b 1\uff0c\u662f\u6240\u6709 NAT \u7c7b\u578b\u4e2d\u6700\u5feb\u3001\u6700\u597d\u7684 NAT \u534f\u8bae\u3002\u5b83\u53ef\u4ee5\u5728\u7f51\u7edc\u4e0a\u7684\u8bbe\u5907\u4e4b\u95f4\u5b9e\u73b0\u4e0d\u53d7\u9650\u5236\u7684\u65e0\u7f1d\u901a\u4fe1\uff0c\u800c\u4e0d\u4f1a\u5f71\u54cd\u901f\u5ea6\u6216 ping\u3002 OpenNAT \u63d0\u4f9b\u901f\u5ea6\u3001\u5b89\u5168\u6027\u548c\u8fde\u63a5\u6027\uff0c\u4f7f\u5176\u6210\u4e3a\u5728\u7ebf\u6e38\u620f\u7684\u7406\u60f3 NAT\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-does-nat-affect-internet-speed\"><strong>NAT \u4f1a\u5f71\u54cd\u7f51\u901f\u5417\uff1f<\/strong><\/h2>\n\n\n\n<p>\u7b80\u800c\u8a00\u4e4b\uff0c\u4e0d\u3002\u4eba\u4eec\u8ba4\u4e3a NAT \u9632\u706b\u5899\u4f1a\u5f71\u54cd\u4e92\u8054\u7f51\u901f\u5ea6\uff0c\u8fd9\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u8bef\u89e3\u3002\u4f46\u662f\uff0c\u60a8\u5e94\u8be5\u786e\u4fdd\u60a8\u5728\u5de5\u4f5c\u6216\u5a31\u4e50\u4e2d\u4f7f\u7528\u6b63\u786e\u7c7b\u578b\u7684 NAT\u3002\u4f8b\u5982\uff0cNAT \u7c7b\u578b 3 \u4e0d\u5229\u4e8e\u6e38\u620f\uff0c\u4f46\u5982\u524d\u6240\u8ff0\uff0c\u5207\u6362\u5230\u4e2d\u7b49 NAT \u7c7b\u578b 1 \u53ef\u4ee5\u663e\u7740\u63d0\u9ad8\u6e38\u620f\u901f\u5ea6\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-are-the-advantages-of-a-nat-firewall\"><strong>NAT \u9632\u706b\u5899\u6709\u54ea\u4e9b\u4f18\u70b9\uff1f<\/strong><\/h2>\n\n\n\n<p>\u57fa\u672c\u4e0a\uff0cNAT \u9632\u706b\u5899\u7684\u4e3b\u8981\u4f18\u70b9\u5305\u62ec\u9632\u6b62\u7f51\u7edc\u653b\u51fb\u3001\u9632\u6b62 IP \u5730\u5740\u6cc4\u6f0f\u4ee5\u53ca\u589e\u5f3a\u9690\u79c1\u548c\u5b89\u5168\u6027\u3002\u5728\u7f51\u7edc\u4e0a\u4f7f\u7528 NAT \u9632\u706b\u5899\u6709\u4e00\u4e9b\u597d\u5904\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7f51\u7edc\u5b89\u5168<\/strong>\uff1aNAT \u901a\u8fc7\u5411\u5916\u90e8\u7f51\u7edc\u9690\u85cf\u5185\u90e8\u7f51\u7edc\u7684 IP \u5730\u5740\u6765\u63d0\u4f9b\u57fa\u7ebf\u5b89\u5168\u7ea7\u522b\u3002\u8fd9\u4f7f\u5f97\u9ed1\u5ba2\u66f4\u96be\u627e\u5230\u5e76\u653b\u51fb\u7f51\u7edc\u4e0a\u7684\u6bcf\u4e2a\u8bbe\u5907\u3002<br><\/li>\n\n\n\n<li><strong>\u76d1\u63a7<\/strong>\uff1aNAT \u76d1\u63a7\u7f51\u7edc\u6d41\u91cf\u3002\u5b83\u5141\u8bb8\u6216\u963b\u6b62\u67d0\u4e9b\u7c7b\u578b\u7684\u6d41\u91cf\uff0c\u4f7f\u7ba1\u7406\u5458\u80fd\u591f\u66f4\u597d\u5730\u63a7\u5236\u7f51\u7edc\u5b89\u5168\u3002<br><\/li>\n\n\n\n<li><strong>\u5b9e\u65f6\u9690\u79c1<\/strong>\uff1aNAT\u5c06\u79c1\u6709IP\u5730\u5740\u8f6c\u6362\u4e3a\u516c\u6709IP\u5730\u5740\uff0c\u4fdd\u62a4\u8bbe\u5907\u548c\u7f51\u7edc\u4e0a\u6570\u636e\u7684\u9690\u79c1\u548c\u5b89\u5168\u3002<br><\/li>\n\n\n\n<li><strong>\u6570\u636e\u4fdd\u7559<\/strong>\uff1aNAT \u4f1a\u4e22\u5f03\u7f51\u5173\u5916\u6ca1\u6709\u79c1\u6709 IP \u5730\u5740\u7684\u672a\u7ecf\u6388\u6743\u7684\u4e92\u8054\u7f51\u6d41\u91cf\uff0c\u4ece\u800c\u51cf\u5c11\u9ed1\u5ba2\u653b\u51fb\u7684\u6b21\u6570\u3002<br><\/li>\n\n\n\n<li><strong>\u7b80\u5316\u7f51\u7edc\u7ba1\u7406<\/strong>\uff1aNAT \u901a\u8fc7\u4f7f\u7528\u5185\u90e8\u7f51\u7edc\u4e0a\u7684\u79c1\u6709 IP \u5730\u5740\u6765\u7b80\u5316\u7f51\u7edc\u7ba1\u7406\u3002\u8fd9\u4f7f\u5f97\u7f51\u7edc\u53ef\u4ee5\u8f7b\u677e\u5bb9\u7eb3\u65b0\u8bbe\u5907\uff0c\u800c\u4e0d\u4f1a\u5f71\u54cd\u4e92\u8054\u7f51\u8fde\u63a5\u3002<br><\/li>\n\n\n\n<li><strong>\u8d1f\u8f7d\u5747\u8861<\/strong>\uff1aNAT \u5141\u8bb8\u4e13\u7528\u7f51\u7edc\u4e0a\u7684\u591a\u4e2a\u8bbe\u5907\u4f7f\u7528\u76f8\u540c\u7684\u516c\u5171 IP \u5730\u5740\uff0c\u6709\u52a9\u4e8e\u5e73\u8861\u7f51\u7edc\u6d41\u91cf\u5e76\u63d0\u9ad8\u6027\u80fd\u3002<br><\/li>\n\n\n\n<li><strong>\u786c\u4ef6\u9632\u706b\u5899\u89e3\u51b3\u65b9\u6848<\/strong>\uff1aNAT \u7684\u5de5\u4f5c\u539f\u7406\u7c7b\u4f3c\u4e8e\u786c\u4ef6\u9632\u706b\u5899\uff0c\u5c3d\u7ba1\u5b83\u5728\u8bbe\u8ba1\u4e0a\u5e76\u4e0d\u662f\u9632\u706b\u5899\u6216\u5b89\u5168\u5de5\u5177\u3002\u5b83\u53ef\u4ee5\u4fdd\u62a4\u60a8\u7684\u8bbe\u5907\u514d\u53d7\u7f51\u7edc\u548c\u4e92\u8054\u7f51\u7684\u8ba8\u538c\u5a01\u80c1\u3002<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-are-the-disadvantages-of-a-nat-firewall\"><strong>NAT \u9632\u706b\u5899\u6709\u54ea\u4e9b\u7f3a\u70b9\uff1f<\/strong><\/h2>\n\n\n\n<p>\u867d\u7136 NAT \u9632\u706b\u5899\u6709\u5f88\u591a\u4f18\u70b9\uff0c\u4f46\u5b83\u4eec\u4e5f\u6709\u4e00\u4e9b\u9700\u8981\u89e3\u51b3\u7684\u7f3a\u70b9\u3002\u4f8b\u5982\uff0c\u5b83\u53ef\u80fd\u4f1a\u6d88\u8017\u66f4\u591a\u7684\u5904\u7406\u80fd\u529b\u5e76\u964d\u4f4e\u7f51\u7edc\u901f\u5ea6\uff0c\u4ece\u800c\u5bfc\u81f4\u5207\u6362\u5ef6\u8fdf\uff0c\u5c24\u5176\u662f\u5728\u4f7f\u7528 VoIP \u6216\u89c6\u9891\u4f1a\u8bae\u7b49\u5b9e\u65f6\u5e94\u7528\u7a0b\u5e8f\u65f6\u3002<\/p>\n\n\n\n<p>\u5b83\u8fd8\u53ef\u80fd\u5bfc\u81f4\u96be\u4ee5\u4f7f\u7528\u7279\u5b9a\u7684\u5e94\u7528\u7a0b\u5e8f\u548c\u534f\u8bae\uff0c\u4f8b\u5982\u5728\u7ebf\u6e38\u620f\u548c P2P \u6587\u4ef6\u5171\u4eab\uff0c\u56e0\u4e3a\u5b83\u9700\u8981\u80fd\u591f\u5728\u8bbe\u5907\u4e4b\u95f4\u76f4\u63a5\u901a\u4fe1\u3002\u6700\u91cd\u8981\u7684\u662f\uff0c\u5728\u66f4\u5e7f\u6cdb\u7684\u7f51\u7edc\u4e2d\uff0cNAT \u7684\u7ba1\u7406\u53ef\u80fd\u4f1a\u5f88\u590d\u6742\uff0c\u4ece\u800c\u5bfc\u81f4\u66f4\u591a\u7684\u7ba1\u7406\u5f00\u9500\u548c\u66f4\u591a\u7684\u9519\u8bef\u3002<\/p>\n\n\n\n<p>\u6700\u540e\uff0c\u867d\u7136 NAT \u53ef\u4ee5\u63d0\u4f9b\u4e00\u4e9b\u57fa\u672c\u7684\u5b89\u5168\u6027\uff0c\u4f46\u5b83\u53ef\u80fd\u662f\u4e00\u4e2a\u66f4\u5b8c\u6574\u7684\u5b89\u5168\u89e3\u51b3\u65b9\u6848\uff0c\u5e76\u4e14\u5f88\u5bb9\u6613\u88ab\u8001\u7ec3\u7684\u653b\u51fb\u8005\u653b\u51fb\u3002<\/p>\n\n\n\n<p><strong>\u6982\u62ec<\/strong>\uff1aNAT \u9632\u706b\u5899\u6709\u5f88\u591a\u597d\u5904\uff0c\u4f46\u4e5f\u4f1a\u5bfc\u81f4\u5207\u6362\u5ef6\u8fdf\u3001\u6d88\u8017\u66f4\u591a\u5904\u7406\u80fd\u529b\u5e76\u5f71\u54cd\u5728\u7ebf\u6e38\u620f\u548c P2P \u6587\u4ef6\u5171\u4eab\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-enable-nat-firewall-on-vpn\"><strong>\u5982\u4f55\u5728VPN\u4e0a\u542f\u7528NAT\u9632\u706b\u5899\uff1f<\/strong><\/h2>\n\n\n\n<p>\u60a8\u53ef\u80fd\u4f1a\u95ee\u81ea\u5df1\uff0c\u6211\u5e94\u8be5\u542f\u7528 NAT \u9632\u706b\u5899\u5417\uff1f\u786e\u4fdd\u60a8\u7684 VPN \u670d\u52a1\u5177\u6709 NAT \u9632\u706b\u5899\u529f\u80fd\u3002\u5982\u679c\u8be5\u529f\u80fd\u53ef\u7528\uff0c\u60a8\u53ef\u4ee5\u4ece VPN \u8bbe\u7f6e\u4e2d\u542f\u7528\u6216\u7981\u7528\u5b83\u3002\u67d0\u4e9b VPN \u63d0\u4f9b NAT \u9632\u706b\u5899\u4f5c\u4e3a\u5185\u7f6e\u529f\u80fd\uff0c\u4ee5\u4fdd\u62a4\u60a8\u514d\u53d7\u4e2d\u95f4\u4eba\u653b\u51fb\u7b49\u5371\u9669\u7684\u7f51\u7edc\u653b\u51fb\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faqs\"><strong>\u5e38\u89c1\u95ee\u9898\u89e3\u7b54<\/strong><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-is-nat-tcp-or-udp\"><strong>NAT\u662fTCP\u8fd8\u662fUDP\uff1f<\/strong><\/h3>\n\n\n\n<p>\u4e0d\uff0cNAT \u4e0d\u9650\u4e8e TCP \u6216 UDP\u3002\u4f46\u4e0d\u540c\u534f\u8bae\u7684\u5de5\u4f5c\u65b9\u5f0f\u53ef\u80fd\u6709\u6240\u4e0d\u540c\u3002 NAT \u5bf9\u4e8e TCP \u8fde\u63a5\u975e\u5e38\u6709\u6548\uff0c\u4f46\u5bf9\u4e8e UDP \u8fde\u63a5\u53ef\u80fd\u4f1a\u5f88\u68d8\u624b\uff0c\u56e0\u4e3a UDP \u662f\u65e0\u8fde\u63a5\u534f\u8bae\u3002\u4e86\u89e3\u4e24\u8005\u4e4b\u95f4\u7684\u533a\u522b <a href=\"https:\/\/symlexvpn.com\/zh\/tcp-vs-udp\/\">TCP \u548c UDP \u534f\u8bae<\/a>\u3002\u4e00\u79cd\u6709\u5229\u4e8e\u5b89\u5168\u6570\u636e\u4f20\u8f93\uff0c\u53e6\u4e00\u79cd\u6709\u5229\u4e8e\u901f\u5ea6\u548c\u4f4e\u5ef6\u8fdf\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-what-osi-level-is-nat\"><strong>NAT \u662f\u4ec0\u4e48 OSI \u7ea7\u522b\uff1f<\/strong><\/h3>\n\n\n\n<p>NAT \u5de5\u4f5c\u5728\u7b2c 3 \u5c42\uff08OSI \u6a21\u578b\uff09\uff0c\u56e0\u4e3a\u5b83\u66f4\u6539 IP \u6807\u5934\u5e76\u8d1f\u8d23\u5c06\u79c1\u6709 IP \u5730\u5740\u8f6c\u6362\u4e3a\u516c\u5171 IP \u5730\u5740\uff0c\u53cd\u4e4b\u4ea6\u7136\u3002\u5f53\u6570\u636e\u5305\u8fdb\u5165\u63a5\u53e3\u65f6\uff0cNAT \u4f18\u5148\u4e8e\u9632\u706b\u5899\u89c4\u5219\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-how-is-nat-different-from-a-firewall\"><strong>NAT \u4e0e\u9632\u706b\u5899\u6709\u4f55\u4e0d\u540c\uff1f<\/strong><\/h3>\n\n\n\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cNAT \u63d0\u4f9b\u4e00\u5b9a\u7a0b\u5ea6\u7684\u5b89\u5168\u6027\uff0c\u4f46\u5b83\u4e0d\u80fd\u53d6\u4ee3\u9632\u706b\u5899\u3002\u9632\u706b\u5899\u6839\u636e\u9884\u5b9a\u4e49\u7684\u5b89\u5168\u89c4\u5219\u76d1\u89c6\u548c\u63a7\u5236\u7f51\u7edc\u6d41\u91cf\uff0c\u5e76\u53ef\u4ee5\u9632\u5fa1\u5404\u79cd\u5a01\u80c1\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\"><strong>\u7ed3\u8bba<\/strong><\/h2>\n\n\n\n<p>\u7efc\u4e0a\u6240\u8ff0\uff0cNAT \u9632\u706b\u5899\u901a\u8fc7\u4f7f\u7528\u8def\u7531\u5668\u4f5c\u4e3a\u5c4f\u969c\u6765\u4fdd\u62a4\u4e0e Internet \u7684\u4e13\u7528\u7f51\u7edc\u8fde\u63a5\u3002\u4ec5\u5f53\u4e13\u7528\u7f51\u7edc\u5185\u7684\u8bbe\u5907\u53d1\u51fa\u8bf7\u6c42\u65f6\uff0c\u5b83\u624d\u5141\u8bb8\u4e92\u8054\u7f51\u6d41\u91cf\uff0c\u4ece\u800c\u963b\u6b62\u6765\u81ea\u4e92\u8054\u7f51\u7684\u4e0d\u9700\u8981\u6216\u53ef\u80fd\u6709\u5bb3\u7684\u6d41\u91cf\u3002\u6b64\u5916\uff0c\u5b83\u8fd8\u9690\u85cf\u5185\u90e8 IP \u5730\u5740\u4ee5\u4fdd\u62a4\u7f51\u7edc\u8eab\u4efd\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>NAT \u9632\u706b\u5899\u4f7f\u7528\u8def\u7531\u5668\u4f5c\u4e3a\u9632\u706b\u5899\u6765\u4fdd\u62a4\u4e13\u7528\u7f51\u7edc\u3002\u4ec5\u5f53\u4e13\u7528\u7f51\u7edc\u4e0a\u7684\u8bbe\u5907\u8bf7\u6c42\u65f6\uff0c\u5b83\u624d\u5141\u8bb8\u4e92\u8054\u7f51\u6d41\u91cf\u3002\u6b64\u5916\uff0c\u5b83\u8fd8\u901a\u8fc7\u4e22\u5f03\u4e0d\u9700\u8981\u7684\u8bf7\u6c42\u548c\u6570\u636e\u5305\u6765\u9632\u6b62\u4e0e\u6f5c\u5728\u6076\u610f\u4e92\u8054\u7f51\u8bbe\u5907\u7684\u901a\u4fe1\u3002 NAT \u4ee3\u8868\u7f51\u7edc\u5730\u5740\u8f6c\u6362\uff0c\u5b83\u91cd\u5199\u6570\u636e\u5305\u7684\u6807\u5934\uff0c\u4ee5\u4fbf\u5b83\u4eec [...]<\/p>","protected":false},"author":2,"featured_media":10229,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"class_list":["post-10227","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-network"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.4 (Yoast SEO v26.4) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Symlex VPN | NAT Firewall on a VPN: Benefits &amp; Drawbacks<\/title>\n<meta name=\"description\" content=\"Discover the power of a NAT firewall on VPN and how it can protect you online from unauthorized access, malicious devices, and cyberattacks.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/symlexvpn.com\/zh\/what-is-a-nat-firewall-and-how-does-it-work-with-vpn\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Symlex VPN | NAT Firewall on a VPN: Benefits &amp; Drawbacks\" \/>\n<meta property=\"og:description\" content=\"Discover the power of a NAT firewall on VPN and how it can protect you online from unauthorized access, malicious devices, and cyberattacks.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/symlexvpn.com\/zh\/what-is-a-nat-firewall-and-how-does-it-work-with-vpn\/\" \/>\n<meta property=\"og:site_name\" content=\"Symlex VPN\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/symlexvpnadmin\" \/>\n<meta property=\"article:published_time\" content=\"2023-09-17T10:50:37+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-02T11:16:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/symlexvpn.net\/wp-content\/uploads\/2023\/09\/NAT-Firewall-Large.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"673\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Aynun Nipa\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Symlex VPN | NAT Firewall on a VPN: Benefits &amp; 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