{"id":6155,"date":"2026-11-03T18:00:07","date_gmt":"2026-11-03T18:00:07","guid":{"rendered":"https:\/\/zynoo.com\/blog\/ubuntu-firewall-ufw\/"},"modified":"2026-11-05T20:09:41","modified_gmt":"2026-11-05T20:09:41","slug":"ubuntu-firewall-ufw","status":"publish","type":"post","link":"https:\/\/zynoo.com\/blog\/zh\/ubuntu-firewall-ufw\/","title":{"rendered":"Ubuntu \u9632\u706b\u5899\uff1a\u5982\u4f55\u5728 VPS \u4e0a\u8bbe\u7f6e UFW"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u4f7f\u7528 UFW\uff08Uncomplicated Firewall\uff09\u914d\u7f6e <strong>Ubuntu \u9632\u706b\u5899<\/strong>\uff0c\u53ef\u4ee5\u5141\u8bb8\u5fc5\u8981\u7684\u8fde\u63a5\u5e76\u963b\u6b62\u4e0d\u5fc5\u8981\u7684\u5165\u7ad9\u6d41\u91cf\uff0c\u4ece\u800c\u4fdd\u62a4\u60a8\u7684 VPS\u3002\u8bbe\u7f6e\u53ea\u9700\u51e0\u6761\u547d\u4ee4\uff0c\u4f46\u6267\u884c\u987a\u5e8f\u5f88\u91cd\u8981\uff1a\u52a1\u5fc5\u5728\u542f\u7528\u9632\u706b\u5899<strong>\u4e4b\u524d<\/strong>\u5141\u8bb8 SSH\uff0c\u5426\u5219\u53ef\u80fd\u5931\u53bb\u8fdc\u7a0b\u8bbf\u95ee\u6743\u9650\u3002<\/p>\n\n<p class=\"wp-block-paragraph\">\u672c\u6559\u7a0b\u5c06\u4ecb\u7ecd\u5982\u4f55\u5b89\u88c5 UFW\u3001\u914d\u7f6e\u5b89\u5168\u7684\u9ed8\u8ba4\u7b56\u7565\u3001\u5f00\u653e\u7f51\u7ad9\u6240\u9700\u7aef\u53e3\u3001\u542f\u7528\u9632\u706b\u5899\uff0c\u4ee5\u53ca\u540e\u7eed\u7ba1\u7406\u89c4\u5219\u3002<\/p>\n\n<h2 id=\"h-key-takeaways\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E8%A6%81%E7%82%B9\"><\/span>\u8981\u70b9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<ul class=\"wp-block-list\">\n<li>UFW \u63d0\u4f9b\u4e86\u4e00\u79cd\u901a\u8fc7\u547d\u4ee4\u884c\u7ba1\u7406 Ubuntu \u9632\u706b\u5899\u7684\u7b80\u4fbf\u65b9\u6cd5\u3002<\/li>\n\n\n\n<li>\u5728\u8fdc\u7a0b VPS \u4e0a\u542f\u7528 UFW \u4e4b\u524d\uff0c\u5148\u5141\u8bb8\u60a8\u5b9e\u9645\u4f7f\u7528\u7684 SSH \u7aef\u53e3\u3002<\/li>\n\n\n\n<li>\u9ed8\u8ba4\u62d2\u7edd\u672a\u7ecf\u8bf7\u6c42\u7684\u5165\u7ad9\u6d41\u91cf\uff0c\u7136\u540e\u53ea\u5f00\u653e\u670d\u52a1\u6240\u9700\u7684\u7aef\u53e3\u3002<\/li>\n\n\n\n<li>\u901a\u8fc7\u7b2c\u4e8c\u4e2a\u8fde\u63a5\u9a8c\u8bc1\u8bbf\u95ee\u662f\u5426\u6b63\u5e38\uff0c\u5e76\u5728\u6dfb\u52a0\u6216\u79fb\u9664\u5e94\u7528\u7a0b\u5e8f\u65f6\u68c0\u67e5\u89c4\u5219\u3002<\/li>\n<\/ul>\n\n<h2 id=\"h-what-is-ufw-on-ubuntu\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ubuntu_%E4%B8%8A%E7%9A%84_UFW_%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F\"><\/span>Ubuntu \u4e0a\u7684 UFW \u662f\u4ec0\u4e48\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">UFW \u662f\u4e00\u6b3e\u9632\u706b\u5899\u914d\u7f6e\u5de5\u5177\uff0c\u7528\u4e8e\u7ba1\u7406 Linux \u5185\u6838\u6570\u636e\u5305\u8fc7\u6ee4\u7cfb\u7edf\u7684\u89c4\u5219\u3002\u60a8\u65e0\u9700\u7f16\u5199\u5e95\u5c42\u89c4\u5219\uff0c\u53ea\u9700\u4f7f\u7528 <code>ufw allow<\/code> \u548c <code>ufw delete<\/code> \u7b49\u547d\u4ee4\uff0c\u5c31\u80fd\u5141\u8bb8\u6216\u62d2\u7edd\u8fde\u63a5\u3002<\/p>\n\n<p class=\"wp-block-paragraph\">\u5bf9\u4e8e\u5178\u578b\u7684\u7f51\u7ad9\u6258\u7ba1 VPS\uff0c\u60a8\u9700\u8981\u5141\u8bb8\u7528\u4e8e\u7ba1\u7406\u7684 SSH \u8fde\u63a5\uff0c\u4ee5\u53ca\u4f9b\u8bbf\u5ba2\u8bbf\u95ee\u7684 80 \u548c 443 \u7aef\u53e3\u3002\u6570\u636e\u5e93\u548c\u5185\u90e8\u5e94\u7528\u7a0b\u5e8f\u7aef\u53e3\u901a\u5e38\u4e0d\u5e94\u66b4\u9732\u5728\u516c\u5171\u4e92\u8054\u7f51\u4e0a\u3002<\/p>\n\n<h2 id=\"h-before-you-configure-the-ubuntu-firewall\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E9%85%8D%E7%BD%AE_Ubuntu_%E9%98%B2%E7%81%AB%E5%A2%99%E4%B9%8B%E5%89%8D\"><\/span>\u914d\u7f6e Ubuntu \u9632\u706b\u5899\u4e4b\u524d<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">\u60a8\u9700\u8981\u4e00\u53f0\u5177\u6709 <code>sudo<\/code> \u6743\u9650\u3001\u4e14 SSH \u8fde\u63a5\u6b63\u5e38\u7684 Ubuntu VPS\u3002\u5982\u679c\u60a8\u521a\u5f00\u59cb\u63a5\u89e6\u8fdc\u7a0b\u7ba1\u7406\uff0c\u8bf7\u53c2\u9605 ZYNOO \u7684<a href=\"https:\/\/zynoo.com\/blog\/zh\/ssh-commands\/\">\u521d\u5b66\u8005 SSH \u547d\u4ee4\u6307\u5357<\/a>\u3002<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>\u4fdd\u6301\u5f53\u524d SSH \u4f1a\u8bdd\u5904\u4e8e\u8fde\u63a5\u72b6\u6001\u3002<\/strong>\u786e\u8ba4 VPS \u670d\u52a1\u5546\u63d0\u4f9b\u7684\u7f51\u9875\u63a7\u5236\u53f0\u6216\u6062\u590d\u63a7\u5236\u53f0\u53ef\u4ee5\u6b63\u5e38\u4f7f\u7528\u3002\u670d\u52a1\u5546\u7ea7\u522b\u7684\u7f51\u7edc\u9632\u706b\u5899\u4e0e UFW \u76f8\u4e92\u72ec\u7acb\uff0c\u4e5f\u53ef\u80fd\u9700\u8981\u914d\u7f6e\u76f8\u5e94\u89c4\u5219\u3002<\/p>\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u8bf4\u660e\u4ee5\u5168\u65b0\u914d\u7f6e\u6216\u5c1a\u672a\u542f\u7528\u7684 UFW \u4e3a\u524d\u63d0\u3002\u5982\u679c UFW \u5df2\u542f\u7528\uff0c\u8bf7\u5148\u68c0\u67e5\u73b0\u6709\u89c4\u5219\u548c\u670d\u52a1\u9700\u6c42\uff0c\u518d\u66f4\u6539\u9ed8\u8ba4\u7b56\u7565\u3002<\/p>\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2026\/11\/Ubuntu-VPS-firewall-configuration-using-UFW-1024x576.webp\" alt=\"\u4f7f\u7528 UFW \u914d\u7f6e Ubuntu VPS \u9632\u706b\u5899\" class=\"wp-image-6152\" srcset=\"https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2026\/11\/Ubuntu-VPS-firewall-configuration-using-UFW-1024x576.webp 1024w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2026\/11\/Ubuntu-VPS-firewall-configuration-using-UFW-300x169.webp 300w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2026\/11\/Ubuntu-VPS-firewall-configuration-using-UFW-768x432.webp 768w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2026\/11\/Ubuntu-VPS-firewall-configuration-using-UFW-1536x864.webp 1536w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2026\/11\/Ubuntu-VPS-firewall-configuration-using-UFW.webp 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<h2 id=\"h-step-1-check-and-install-ufw\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%AC%AC_1_%E6%AD%A5%EF%BC%9A%E6%A3%80%E6%9F%A5%E5%B9%B6%E5%AE%89%E8%A3%85_UFW\"><\/span>\u7b2c 1 \u6b65\uff1a\u68c0\u67e5\u5e76\u5b89\u88c5 UFW<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">\u68c0\u67e5 UFW \u662f\u5426\u53ef\u7528\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ufw status<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">\u663e\u793a <code>Status: inactive<\/code> \u8868\u793a UFW \u5df2\u5b89\u88c5\uff0c\u4f46\u5c1a\u672a\u6267\u884c\u89c4\u5219\u3002\u5982\u679c\u627e\u4e0d\u5230\u8be5\u547d\u4ee4\uff0c\u8bf7\u5b89\u88c5 UFW\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo apt update\nsudo apt install ufw<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">\u6682\u65f6\u4e0d\u8981\u542f\u7528\u9632\u706b\u5899\u3002<\/p>\n\n<h2 id=\"h-step-2-allow-ssh-before-enabling-ufw\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%AC%AC_2_%E6%AD%A5%EF%BC%9A%E5%9C%A8%E5%90%AF%E7%94%A8_UFW_%E4%B9%8B%E5%89%8D%E5%85%81%E8%AE%B8_SSH\"><\/span>\u7b2c 2 \u6b65\uff1a\u5728\u542f\u7528 UFW \u4e4b\u524d\u5141\u8bb8 SSH<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">\u67e5\u627e SSH \u6b63\u5728\u76d1\u542c\u7684 TCP \u7aef\u53e3\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ss -ltnp<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">\u5c06\u8f93\u51fa\u7ed3\u679c\u4e0e SSH \u5ba2\u6237\u7aef\u4f7f\u7528\u7684\u7aef\u53e3\u8fdb\u884c\u6bd4\u8f83\u3002<strong>22<\/strong> \u7aef\u53e3\u5f88\u5e38\u89c1\uff0c\u4f46 VPS \u4e5f\u53ef\u80fd\u914d\u7f6e\u4e3a\u4f7f\u7528\u5176\u4ed6\u7aef\u53e3\u3002<\/p>\n\n<p class=\"wp-block-paragraph\">\u5982\u679c SSH \u4f7f\u7528 22 \u7aef\u53e3\uff0c\u8bf7\u8fd0\u884c\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ufw allow 22\/tcp<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">\u5982\u679c SSH \u5b9e\u9645\u4f7f\u7528 2222 \u7b49\u81ea\u5b9a\u4e49\u7aef\u53e3\uff0c\u8bf7<em>\u6539\u4e3a<\/em>\u5141\u8bb8\u8be5\u7aef\u53e3\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ufw allow 2222\/tcp<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">2222 \u53ea\u662f\u793a\u4f8b\u7aef\u53e3\uff0c\u5e76\u975e\u6240\u6709\u4eba\u90fd\u9700\u8981\u989d\u5916\u5f00\u653e\u3002\u68c0\u67e5\u5f85\u751f\u6548\u7684\u89c4\u5219\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ufw show added<\/code><\/pre>\n\n<h2 id=\"h-step-3-set-default-rules-and-check-ipv6\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%AC%AC_3_%E6%AD%A5%EF%BC%9A%E8%AE%BE%E7%BD%AE%E9%BB%98%E8%AE%A4%E8%A7%84%E5%88%99%E5%B9%B6%E6%A3%80%E6%9F%A5_IPv6\"><\/span>\u7b2c 3 \u6b65\uff1a\u8bbe\u7f6e\u9ed8\u8ba4\u89c4\u5219\u5e76\u68c0\u67e5 IPv6<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">\u5bf9\u5165\u7ad9\u8fde\u63a5\u4f7f\u7528\u9ed8\u8ba4\u62d2\u7edd\u7b56\u7565\uff0c\u540c\u65f6\u5141\u8bb8 VPS \u4e3b\u52a8\u5efa\u7acb\u51fa\u7ad9\u8fde\u63a5\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ufw default deny incoming\nsudo ufw default allow outgoing<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u60a8\u7684 VPS \u5177\u6709\u516c\u5171 IPv6 \u8fde\u63a5\uff0c\u8bf7\u786e\u8ba4 UFW \u80fd\u591f\u5904\u7406 IPv6\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>grep '^IPV6=' \/etc\/default\/ufw<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">\u9884\u671f\u7684\u8bbe\u7f6e\u4e3a <code>IPV6=yes<\/code>\u3002\u5982\u679c\u6b63\u5728\u4f7f\u7528 IPv6\uff0c\u4f46\u6b64\u9879\u8bbe\u7f6e\u4e3a <code>no<\/code>\uff0c\u8bf7\u5728\u542f\u7528\u9632\u706b\u5899<strong>\u4e4b\u524d<\/strong>\u7f16\u8f91 <code>\/etc\/default\/ufw<\/code>\uff0c\u4ee5\u542f\u7528 IPv6 \u5904\u7406\u3002<\/p>\n\n<h2 id=\"h-step-4-open-the-ports-your-website-needs\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%AC%AC_4_%E6%AD%A5%EF%BC%9A%E5%BC%80%E6%94%BE%E7%BD%91%E7%AB%99%E6%89%80%E9%9C%80%E7%9A%84%E7%AB%AF%E5%8F%A3\"><\/span>\u7b2c 4 \u6b65\uff1a\u5f00\u653e\u7f51\u7ad9\u6240\u9700\u7684\u7aef\u53e3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">\u5982\u679c VPS \u6258\u7ba1\u516c\u5f00\u8bbf\u95ee\u7684\u7f51\u7ad9\uff0c\u8bf7\u5728\u542f\u7528 UFW \u4e4b\u524d\u5141\u8bb8 <a href=\"https:\/\/en.wikipedia.org\/wiki\/HTTP\">HTTP<\/a> \u548c HTTPS\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ufw allow 80\/tcp\nsudo ufw allow 443\/tcp<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Ubuntu VPS \u7684\u5e38\u7528\u7aef\u53e3\u5305\u62ec\uff1a<\/p>\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\u670d\u52a1<\/th><th>\u7aef\u53e3<\/th><th>\u534f\u8bae<\/th><\/tr><tr><td>SSH<\/td><td>22\uff08\u6216\u60a8\u7684\u81ea\u5b9a\u4e49\u7aef\u53e3\uff09<\/td><td>TCP<\/td><\/tr><tr><td>HTTP<\/td><td>80<\/td><td>TCP<\/td><\/tr><tr><td>HTTPS<\/td><td>443<\/td><td>TCP<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<p class=\"wp-block-paragraph\">\u5bf9\u4e8e\u4f7f\u7528\u5176\u4ed6 TCP \u7aef\u53e3\u7684\u516c\u5f00\u5e94\u7528\u7a0b\u5e8f\uff0cUFW \u5141\u8bb8\u7aef\u53e3\u7684\u547d\u4ee4\u8bed\u6cd5\u4e3a\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ufw allow 8080\/tcp<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">\u53ea\u6709\u5f53\u60a8\u7684\u670d\u52a1\u9700\u8981\u901a\u8fc7 8080 \u7aef\u53e3\u63a5\u53d7\u5916\u90e8\u8bbf\u95ee\u65f6\uff0c\u624d\u8fd0\u884c\u8be5\u793a\u4f8b\u547d\u4ee4\u3002\u5bf9\u4e8e UDP \u670d\u52a1\uff0c\u8bf7\u6539\u7528 <code>\/udp<\/code>\uff0c\u4f8b\u5982\uff0c\u4e3a\u914d\u7f6e\u5728\u8be5\u7aef\u53e3\u4e0a\u7684 WireGuard \u7aef\u70b9\u4f7f\u7528 <code>sudo ufw allow 51820\/udp<\/code>\u3002<\/p>\n\n<p class=\"wp-block-paragraph\">\u60a8\u4e5f\u53ef\u4ee5\u67e5\u770b\u53ef\u7528\u7684\u5e94\u7528\u7a0b\u5e8f\u914d\u7f6e\u6587\u4ef6\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ufw app list<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u5217\u8868\u4e2d\u6709 <code>Nginx Full<\/code>\uff0c\u8bf7\u4f7f\u7528 <code>sudo ufw app info 'Nginx Full'<\/code> \u68c0\u67e5\u5176\u7aef\u53e3\u3002\u547d\u4ee4 <code>sudo ufw allow 'Nginx Full'<\/code> \u53ef\u4ee5\u66ff\u4ee3\u4e0a\u9762\u4e24\u6761\u7f51\u7ad9\u7aef\u53e3\u89c4\u5219\uff1b\u65e0\u9700\u540c\u65f6\u4f7f\u7528\u4e24\u79cd\u65b9\u6cd5\u3002\u4f4d\u4e8e<a href=\"https:\/\/zynoo.com\/blog\/zh\/nginx-reverse-proxy-ubuntu\/\">\u672c\u5730 Nginx \u53cd\u5411\u4ee3\u7406<\/a>\u540e\u9762\u7684\u5e94\u7528\u7a0b\u5e8f\u901a\u5e38\u4e0d\u5e94\u5c06\u5176\u540e\u7aef\u7aef\u53e3\u516c\u5f00\u3002<\/p>\n\n<h2 id=\"h-step-5-enable-ufw-and-verify-the-firewall\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%AC%AC_5_%E6%AD%A5%EF%BC%9A%E5%90%AF%E7%94%A8_UFW_%E5%B9%B6%E9%AA%8C%E8%AF%81%E9%98%B2%E7%81%AB%E5%A2%99\"><\/span>\u7b2c 5 \u6b65\uff1a\u542f\u7528 UFW \u5e76\u9a8c\u8bc1\u9632\u706b\u5899<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">\u5141\u8bb8 SSH \u548c\u5176\u4ed6\u5fc5\u9700\u7684\u670d\u52a1\u7aef\u53e3\u540e\uff0c\u542f\u7528 UFW\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ufw enable<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">\u7cfb\u7edf\u53ef\u80fd\u4f1a\u8b66\u544a\u6b64\u64cd\u4f5c\u4f1a\u5f71\u54cd SSH\u3002\u53ea\u6709\u5728\u786e\u8ba4 SSH \u89c4\u5219\u548c\u6062\u590d\u8bbf\u95ee\u65b9\u5f0f\u540e\uff0c\u624d\u7ee7\u7eed\u64cd\u4f5c\u3002\u68c0\u67e5\u5f53\u524d\u751f\u6548\u7684\u89c4\u5219\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ufw status verbose<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">\u60a8\u5e94\u8be5\u80fd\u770b\u5230 <code>Status: active<\/code>\u3001\u9ed8\u8ba4\u7b56\u7565\u548c\u5df2\u5141\u8bb8\u7684\u7aef\u53e3\u3002UFW \u4e5f\u4f1a\u5728\u7cfb\u7edf\u542f\u52a8\u65f6\u81ea\u52a8\u542f\u7528\u3002<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>\u5728\u5173\u95ed\u539f\u6709 SSH \u4f1a\u8bdd\u4e4b\u524d\uff0c\u4ece\u7b2c\u4e8c\u4e2a\u7ec8\u7aef\u518d\u6b21\u5efa\u7acb\u8fde\u63a5\u3002<\/strong>\u5728\u60a8\u81ea\u5df1\u7684\u7535\u8111\u4e0a\u4f7f\u7528 <code>ssh -p 22 username@server-ip<\/code>\uff0c\u5e76\u6309\u9700\u66ff\u6362\u7528\u6237\u540d\u3001\u5730\u5740\u548c\u7aef\u53e3\u3002\u5982\u679c\u5f00\u653e\u4e86 80 \u548c 443 \u7aef\u53e3\uff0c\u8bf7\u4ece\u5916\u90e8\u6d4b\u8bd5\u7f51\u7ad9\u662f\u5426\u53ef\u8bbf\u95ee\u3002\u4ec5\u6709\u4e00\u6761 <code>ALLOW<\/code> \u89c4\u5219\uff0c\u5e76\u4e0d\u80fd\u8bc1\u660e\u670d\u52a1\u53ef\u4ee5\u6b63\u5e38\u8bbf\u95ee\u3002<\/p>\n\n<h2 id=\"h-step-6-manage-restrict-and-delete-ufw-rules\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%AC%AC_6_%E6%AD%A5%EF%BC%9A%E7%AE%A1%E7%90%86%E3%80%81%E9%99%90%E5%88%B6%E5%92%8C%E5%88%A0%E9%99%A4_UFW_%E8%A7%84%E5%88%99\"><\/span>\u7b2c 6 \u6b65\uff1a\u7ba1\u7406\u3001\u9650\u5236\u548c\u5220\u9664 UFW \u89c4\u5219<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">\u5217\u51fa\u5e26\u7f16\u53f7\u7684\u9632\u706b\u5899\u89c4\u5219\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ufw status numbered<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">\u5220\u9664\u8fc7\u65f6\u7684\u5141\u8bb8\u89c4\u5219\uff0c\u4f8b\u5982 TCP 8080 \u7aef\u53e3\u7684\u89c4\u5219\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ufw delete allow 8080\/tcp<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">\u60a8\u4e5f\u53ef\u4ee5\u6309\u89c4\u5219\u7f16\u53f7\u5220\u9664\uff08<code>sudo ufw delete 3<\/code>\uff09\uff0c\u4f46\u8981\u5148\u67e5\u770b\u5f53\u524d\u5217\u8868\uff1a\u7f16\u53f7\u53ef\u80fd\u53d1\u751f\u53d8\u5316\uff0c\u800c\u4e14\u6309\u7f16\u53f7\u5220\u9664\u65f6\uff0c\u53ef\u80fd\u53ea\u4f1a\u5220\u9664\u4e00\u7ec4\u5bf9\u5e94 IPv4\/IPv6 \u89c4\u5219\u4e2d\u7684\u4e00\u6761\u3002<\/p>\n\n<h3 id=\"h-optional-restrict-ssh-to-your-ip\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%AF%E9%80%89%EF%BC%9A%E4%BB%85%E5%85%81%E8%AE%B8%E6%82%A8%E7%9A%84_IP_%E8%AE%BF%E9%97%AE_SSH\"><\/span>\u53ef\u9009\uff1a\u4ec5\u5141\u8bb8\u60a8\u7684 IP \u8bbf\u95ee SSH<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u60a8\u7528\u4e8e\u7ba1\u7406\u7684 IP \u5730\u5740\u56fa\u5b9a\uff0c\u53ef\u4ee5\u5c06 SSH \u8bbf\u95ee\u9650\u5236\u4e3a\u4ec5\u5141\u8bb8\u8be5\u5730\u5740\u3002\u4f8b\u5982\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ufw allow from 203.0.113.10 to any port 22 proto tcp<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">\u5c06\u793a\u4f8b IP \u66ff\u6362\u4e3a\u60a8\u7684\u771f\u5b9e\u516c\u7f51 IP\u3002\u4ece\u8be5\u5730\u5740\u6d4b\u8bd5\u65b0\u7684\u767b\u5f55\u8fde\u63a5\uff0c\u7136\u540e\u4f7f\u7528 <code>sudo ufw delete allow 22\/tcp<\/code> \u5220\u9664\u539f\u5148\u5141\u8bb8\u6240\u6709\u5730\u5740\u8bbf\u95ee\u7684\u89c4\u5219\u3002<strong>\u5982\u679c\u4fdd\u7559\u8fd9\u6761\u89c4\u5219\uff0c\u6240\u6709\u4eba\u4ecd\u53ef\u8bbf\u95ee\u3002<\/strong>\u5728\u6574\u4e2a\u8fc7\u7a0b\u4e2d\uff0c\u4fdd\u6301\u539f\u6709\u4f1a\u8bdd\u548c\u6062\u590d\u63a7\u5236\u53f0\u53ef\u7528\u3002<\/p>\n\n<h3 id=\"h-optional-rate-limit-ssh-attempts\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%AF%E9%80%89%EF%BC%9A%E9%99%90%E5%88%B6_SSH_%E8%BF%9E%E6%8E%A5%E5%B0%9D%E8%AF%95%E9%A2%91%E7%8E%87\"><\/span>\u53ef\u9009\uff1a\u9650\u5236 SSH \u8fde\u63a5\u5c1d\u8bd5\u9891\u7387<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">\u6216\u8005\uff0c\u5982\u679c\u60a8\u9700\u8981\u4ece\u4e0d\u65ad\u53d8\u5316\u7684 IP \u5730\u5740\u8bbf\u95ee SSH\uff0c\u53ef\u4ee5\u5c06\u5141\u8bb8\u6240\u6709\u5730\u5740\u8bbf\u95ee\u7684\u89c4\u5219\u66ff\u6362\u4e3a\u8fde\u63a5\u9891\u7387\u9650\u5236\u89c4\u5219\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ufw limit 22\/tcp\nsudo ufw delete allow 22\/tcp\nsudo ufw status numbered<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">\u53ea\u6709\u5728\u786e\u8ba4 SSH \u8fde\u63a5\u548c\u6062\u590d\u8bbf\u95ee\u65b9\u5f0f\u5747\u6b63\u5e38\u540e\uff0c\u624d\u6267\u884c\u6b64\u64cd\u4f5c\uff1b\u5982\u679c\u5b9e\u9645 SSH \u7aef\u53e3\u4e0d\u662f 22\uff0c\u8bf7\u4f7f\u7528\u5b9e\u9645\u7aef\u53e3\u3002\u4e4b\u540e\u518d\u6d4b\u8bd5\u4e00\u6b21\u767b\u5f55\u3002\u8fd9\u662f\u4ec5\u5141\u8bb8\u7279\u5b9a IP \u8bbf\u95ee\u7684<strong>\u66ff\u4ee3\u65b9\u6848<\/strong>\uff0c\u4e0d\u5e94\u4e0e\u4e4b\u53e0\u52a0\u4f7f\u7528\u3002\u9891\u7387\u9650\u5236\u4e0d\u80fd\u66ff\u4ee3 SSH \u5bc6\u94a5\u8ba4\u8bc1\u3002<\/p>\n\n<h2 id=\"h-step-7-check-logs-and-troubleshoot-access\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%AC%AC_7_%E6%AD%A5%EF%BC%9A%E6%A3%80%E6%9F%A5%E6%97%A5%E5%BF%97%E5%B9%B6%E6%8E%92%E6%9F%A5%E8%AE%BF%E9%97%AE%E9%97%AE%E9%A2%98\"><\/span>\u7b2c 7 \u6b65\uff1a\u68c0\u67e5\u65e5\u5fd7\u5e76\u6392\u67e5\u8bbf\u95ee\u95ee\u9898<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">\u9700\u8981\u8c03\u67e5\u88ab\u963b\u6b62\u7684\u6d41\u91cf\u65f6\uff0c\u53ef\u542f\u7528\u57fa\u672c\u65e5\u5fd7\u8bb0\u5f55\uff1a<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo ufw logging on\nsudo ufw status verbose<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">\u6839\u636e\u60a8\u7684\u65e5\u5fd7\u914d\u7f6e\uff0cUFW \u65e5\u5fd7\u53ef\u80fd\u4f4d\u4e8e\u7cfb\u7edf\u65e5\u5fd7\uff08journal\uff09\u6216 <code>\/var\/log\/ufw.log<\/code> \u4e2d\u3002<\/p>\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u65e0\u6cd5\u901a\u8fc7 SSH \u8fde\u63a5\uff0c\u8bf7\u4f7f\u7528\u670d\u52a1\u5546\u63d0\u4f9b\u7684<strong>\u6062\u590d\u63a7\u5236\u53f0<\/strong>\u68c0\u67e5\u5f53\u524d\u751f\u6548\u7684\u89c4\u5219\u3002\u4f5c\u4e3a\u4e34\u65f6\u5e94\u6025\u63aa\u65bd\uff0c<code>sudo ufw disable<\/code> \u53ef\u4ee5\u505c\u6b62\u6267\u884c\u9632\u706b\u5899\u89c4\u5219\uff1b\u968f\u540e\u4fee\u6b63 SSH \u89c4\u5219\u5e76\u91cd\u65b0\u542f\u7528 UFW\u3002<\/p>\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u7f51\u7ad9\u65e0\u6cd5\u52a0\u8f7d\uff0c\u8bf7\u4f7f\u7528 <code>sudo ss -ltnp<\/code> \u68c0\u67e5\u6b63\u5728\u76d1\u542c\u7684\u670d\u52a1\uff0c\u5e76\u68c0\u67e5 UFW \u89c4\u5219\u53ca\u670d\u52a1\u5546\u7684\u9632\u706b\u5899\u3002\u5f00\u653e\u7aef\u53e3\u4e0d\u4f1a\u81ea\u52a8\u542f\u52a8\u4f7f\u7528\u8be5\u7aef\u53e3\u7684\u670d\u52a1\u3002<\/p>\n\n<h2 id=\"h-frequently-asked-questions\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%B8%B8%E8%A7%81%E9%97%AE%E9%A2%98\"><\/span>\u5e38\u89c1\u95ee\u9898<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1793901025290\"><strong class=\"schema-faq-question\">Ubuntu \u9632\u706b\u5899\u4f1a\u5728\u91cd\u542f\u540e\u81ea\u52a8\u542f\u52a8\u5417\uff1f<\/strong> <p class=\"schema-faq-answer\">\u4f1a\u3002\u8fd0\u884c sudo ufw enable \u540e\uff0cUFW \u4f1a\u5728\u4e4b\u540e\u7684\u7cfb\u7edf\u542f\u52a8\u65f6\u81ea\u52a8\u542f\u7528\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528 sudo ufw status verbose \u68c0\u67e5\u5176\u914d\u7f6e\u3002<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1793901239112\"><strong class=\"schema-faq-question\">\u66f4\u6539 UFW \u89c4\u5219\u540e\u9700\u8981\u91cd\u542f Ubuntu \u5417\uff1f<\/strong> <p class=\"schema-faq-answer\">\u4e0d\u9700\u8981\u3002\u901a\u8fc7 UFW \u6dfb\u52a0\u6216\u5220\u9664\u7684\u89c4\u5219\u65e0\u9700\u91cd\u542f VPS \u5373\u53ef\u751f\u6548\u3002\u60a8\u53ef\u4ee5\u7acb\u5373\u67e5\u770b\u5f53\u524d\u914d\u7f6e\u3002<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1793901250570\"><strong class=\"schema-faq-question\">UFW \u9632\u706b\u5899\u80fd\u4fdd\u62a4 Docker \u5bb9\u5668\u5417\uff1f<\/strong> <p class=\"schema-faq-answer\">\u4e0d\u4e00\u5b9a\u3002Docker \u53d1\u5e03\u7684\u7aef\u53e3\u53ef\u80fd\u7ed5\u8fc7\u5e38\u89c4\u7684 UFW \u5165\u7ad9\u89c4\u5219\uff0c\u56e0\u4e3a Docker \u4f1a\u914d\u7f6e\u81ea\u5df1\u7684\u7f51\u7edc\u89c4\u5219\u3002\u5728\u4f9d\u9760 UFW \u9650\u5236\u5bb9\u5668\u8bbf\u95ee\u4e4b\u524d\uff0c\u8bf7\u67e5\u9605 Docker \u7684\u9632\u706b\u5899\u6587\u6863\u3002<\/p> <\/div> <\/div>\n\n<h2 id=\"h-conclusion\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%80%BB%E7%BB%93\"><\/span>\u603b\u7ed3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528 UFW \u5b89\u5168\u914d\u7f6e <strong>Ubuntu \u9632\u706b\u5899<\/strong>\uff0c\u9996\u5148\u8981\u5141\u8bb8 SSH\uff0c\u8bbe\u7f6e\u9ed8\u8ba4\u62d2\u7edd\u5165\u7ad9\u8fde\u63a5\u7684\u7b56\u7565\uff0c\u7136\u540e\u53ea\u5f00\u653e\u5e94\u7528\u7a0b\u5e8f\u6240\u9700\u7684\u7aef\u53e3\u3002\u542f\u7528 UFW \u540e\uff0c\u901a\u8fc7\u5355\u72ec\u7684\u8fde\u63a5\u9a8c\u8bc1\u8bbf\u95ee\u662f\u5426\u6b63\u5e38\uff0c\u5e76\u968f\u7740 VPS \u914d\u7f6e\u7684\u53d8\u5316\u5220\u9664\u8fc7\u65f6\u7684\u89c4\u5219\u3002<\/p>\n\n<p class=\"wp-block-paragraph\">UFW \u7ba1\u7406\u7684\u662f\u7f51\u7edc\u8bbf\u95ee\uff0c\u65e0\u6cd5\u9632\u8303\u5e94\u7528\u7a0b\u5e8f\u5c42\u9762\u7684\u6ee5\u7528\u3002\u5bf9\u4e8e\u516c\u5f00\u8bbf\u95ee\u7684 Nginx \u7f51\u7ad9\uff0c<a href=\"https:\/\/zynoo.com\/blog\/zh\/nginx-rate-limiting\/\">\u8bf7\u6c42\u9891\u7387\u9650\u5236<\/a>\u662f\u4e00\u9879\u6709\u7528\u7684\u989d\u5916\u9632\u62a4\u63aa\u65bd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528 UFW\uff08Uncomplicated Firewall\uff09\u914d\u7f6e Ubuntu \u9632\u706b\u5899\uff0c\u53ef\u4ee5\u5141\u8bb8\u5fc5\u8981\u7684\u8fde\u63a5\u5e76\u963b [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":6156,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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