{"id":32382,"date":"2026-08-04T12:00:00","date_gmt":"2026-08-04T04:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=32382"},"modified":"2026-08-04T20:14:23","modified_gmt":"2026-08-04T12:14:23","slug":"wireguard-troubleshooting-cloud-server","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/wireguard-troubleshooting-cloud-server\/","title":{"rendered":"WireGuard \u8fd0\u7ef4\u901a\u9053\u6392\u969c\u6e05\u5355\uff1a\u591a\u53f0\u4e91\u670d\u52a1\u5668\u5982\u4f55\u7a33\u5b9a\u4e92\u8054"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/wireguard-troubleshooting-cloud-server-cover.webp\" alt=\"WireGuard \u8fd0\u7ef4\u901a\u9053\u6392\u969c\u6e05\u5355\u5c01\u9762\u56fe\" loading=\"lazy\" \/><\/p>\n<p>\u5982\u679c\u4f60\u5df2\u7ecf\u7528 WireGuard \u4e3a\u591a\u53f0\u4e91\u670d\u52a1\u5668\u5efa\u7acb\u4e86\u8fd0\u7ef4\u901a\u9053\uff0c\u771f\u6b63\u96be\u7684\u5f80\u5f80\u4e0d\u662f\u201c\u5982\u4f55\u88c5\u597d\u201d\uff0c\u800c\u662f\u4e3a\u4ec0\u4e48\u67d0\u4e2a\u8282\u70b9\u7a81\u7136\u63e1\u624b\u6b63\u5e38\u5374\u8bbf\u95ee\u5931\u8d25\u3001\u67d0\u6761\u5185\u7f51\u8def\u7531\u53ea\u5728\u90e8\u5206\u673a\u5668\u4e0a\u751f\u6548\u3001\u4e00\u6b21\u7cfb\u7edf\u91cd\u542f\u540e\u901a\u9053\u6062\u590d\u6162\u3002\u672c\u6587\u7ed9\u51fa\u4e00\u4efd WireGuard \u8fd0\u7ef4\u901a\u9053\u6392\u969c\u6e05\u5355\uff0c\u5e2e\u52a9\u4f60\u628a\u7aef\u53e3\u3001\u5bc6\u94a5\u3001\u8def\u7531\u3001MTU\uff08\u6700\u5927\u4f20\u8f93\u5355\u5143\uff09\u3001\u9632\u706b\u5899\u548c\u76d1\u63a7\u9010\u9879\u6838\u5bf9\uff0c\u907f\u514d\u628a\u95ee\u9898\u5f52\u548e\u4e8e\u201c\u7f51\u7edc\u4e0d\u7a33\u5b9a\u201d\u5374\u627e\u4e0d\u5230\u8bc1\u636e\u3002<\/p>\n<p>\u672c\u6587\u907f\u5f00\u201c\u4ece\u96f6\u5b89\u88c5\u201d\u7684\u91cd\u590d\u5185\u5bb9\uff0c\u91cd\u70b9\u770b\u591a\u53f0\u4e91\u670d\u52a1\u5668\uff08\u8fd0\u884c\u5728\u4e91\u57fa\u7840\u8bbe\u65bd\u4e0a\u7684\u865a\u62df\u670d\u52a1\u5668\uff09\u957f\u671f\u4e92\u8054\u540e\u7684\u7a33\u5b9a\u6027\u68c0\u67e5\u3002\u82e5\u4f60\u9700\u8981\u5148\u4e86\u89e3\u57fa\u7840\u7ec4\u7f51\u601d\u8def\uff0c\u53ef\u4ee5\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/wireguard-site-ops-channel\/\">WireGuard \u7ec4\u7f51\u6307\u5357<\/a>\uff1b\u89c4\u5212\u8282\u70b9\u89c4\u683c\u65f6\uff0c\u4e5f\u53ef\u7ed3\u5408 <a href=\"https:\/\/cn.hostease.com\/blog\/vps\/\">VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09\u4e3b\u673a\u65b9\u6848<\/a> \u8bc4\u4f30 CPU\u3001\u5185\u5b58\u548c\u516c\u7f51\u5e26\u5bbd\uff08\u5355\u4f4d\u65f6\u95f4\u5185\u53ef\u4f20\u8f93\u7684\u6570\u636e\u91cf\uff09\u3002<\/p>\n<h2>\u5148\u786e\u8ba4\u6545\u969c\u8fb9\u754c\uff1a\u662f\u63e1\u624b\u3001\u8def\u7531\u8fd8\u662f\u5e94\u7528\u5c42<\/h2>\n<p>WireGuard \u6392\u969c\u7684\u7b2c\u4e00\u6b65\u4e0d\u662f\u91cd\u542f\u670d\u52a1\uff0c\u800c\u662f\u628a\u95ee\u9898\u62c6\u6210\u4e09\u5c42\uff1a\u96a7\u9053\u662f\u5426\u8fd8\u5728\u63e1\u624b\u3001\u8def\u7531\u662f\u5426\u628a\u6d41\u91cf\u9001\u8fdb\u96a7\u9053\u3001\u5e94\u7528\u670d\u52a1\u662f\u5426\u76d1\u542c\u5728\u6b63\u786e\u5730\u5740\u3002\u5f88\u591a\u56e2\u961f\u4e00\u770b\u5230 SSH \u8fde\u63a5\u4e0d\u4e0a\u5c31\u76f4\u63a5\u91cd\u542f\u670d\u52a1\uff0c\u77ed\u671f\u53ef\u80fd\u6062\u590d\uff0c\u5374\u4f1a\u63a9\u76d6\u5bc6\u94a5\u53d8\u66f4\u3001AllowedIPs \u8fc7\u5bbd\u6216\u9632\u706b\u5899\u89c4\u5219\u4e22\u5931\u7b49\u771f\u5b9e\u539f\u56e0\u3002<\/p>\n<p>\u5efa\u8bae\u5148\u5728\u4e24\u7aef\u5206\u522b\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo wg show\nip route get 10.20.0.12\nping -c 4 10.20.0.12\nss -lntup | grep -E '22|80|443'\n<\/code><\/pre>\n<p><code>wg show<\/code> \u4e2d\u7684 latest handshake \u82e5\u8d85\u8fc7 2 \u5206\u949f\uff0c\u901a\u5e38\u5148\u770b UDP \u7aef\u53e3\u3001Endpoint \u548c\u9632\u706b\u5899\uff1b\u63e1\u624b\u6b63\u5e38\u4f46 <code>ping<\/code> \u4e0d\u901a\uff0c\u5219\u770b AllowedIPs\u3001\u5185\u6838\u8f6c\u53d1\u548c\u8def\u7531\u8868\uff1b\u96a7\u9053\u5730\u5740\u80fd\u901a\u4f46\u4e1a\u52a1\u7aef\u53e3\u4e0d\u901a\uff0c\u518d\u67e5\u5e94\u7528\u76d1\u542c\u5730\u5740\u548c\u4e3b\u673a\u9632\u706b\u5899\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/wireguard-troubleshooting-cloud-server-boundary.webp\" alt=\"WireGuard \u6545\u969c\u8fb9\u754c\u5206\u5c42\u56fe\" loading=\"lazy\" \/><\/p>\n<h2>\u7aef\u53e3\u548c\u5bc6\u94a5\uff1a\u5148\u6392\u9664\u201c\u770b\u4e0d\u89c1\u201d\u7684\u57fa\u7840\u95ee\u9898<\/h2>\n<p>\u5f53 WireGuard \u96a7\u9053\u5b8c\u5168\u6ca1\u6709\u63e1\u624b\uff0c\u4f18\u5148\u68c0\u67e5 3 \u4e2a\u57fa\u7840\u9879\uff1aUDP \u7aef\u53e3\u662f\u5426\u653e\u884c\u3001PrivateKey \u4e0e PublicKey \u662f\u5426\u6210\u5bf9\u3001\u5bf9\u7aef Endpoint \u662f\u5426\u4ecd\u6307\u5411\u6b63\u786e\u516c\u7f51 IP\u3002WireGuard \u9ed8\u8ba4\u4e0d\u4f1a\u50cf\u4f20\u7edf VPN\uff08\u865a\u62df\u4e13\u7528\u7f51\u7edc\uff09\u670d\u52a1\u90a3\u6837\u8f93\u51fa\u5927\u91cf\u8fde\u63a5\u65e5\u5fd7\uff0c\u56e0\u6b64\u8981\u5148\u786e\u8ba4\u6570\u636e\u5305\u662f\u5426\u771f\u7684\u5230\u8fbe\u5bf9\u7aef\u3002<\/p>\n<p>\u5047\u8bbe\u670d\u52a1\u7aef\u76d1\u542c <code>51820\/udp<\/code>\uff0c\u53ef\u7528\u4ee5\u4e0b\u547d\u4ee4\u9a8c\u8bc1\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo ss -lunp | grep 51820\nsudo nft list ruleset | grep 51820 || sudo iptables -S | grep 51820\nsudo tcpdump -ni any udp port 51820\n<\/code><\/pre>\n<p>\u5982\u679c <code>tcpdump<\/code> \u6ca1\u770b\u5230\u5bf9\u7aef UDP \u5305\uff0c\u95ee\u9898\u591a\u534a\u5728\u4e0a\u6e38\u9632\u706b\u5899\u6216\u5b89\u5168\u7ec4\uff1b\u5982\u679c\u80fd\u770b\u5230\u5165\u7ad9\u5305\u4f46\u6ca1\u6709\u66f4\u65b0 handshake\uff0c\u5c31\u68c0\u67e5 PublicKey\u3001\u7cfb\u7edf\u65f6\u95f4\u548c NAT \u540e Endpoint\u3002\u591a\u8282\u70b9\u7ec4\u7f51\u65f6\uff0c\u6bcf\u53f0\u673a\u5668\u53ea\u4fdd\u7559\u81ea\u5df1\u9700\u8981\u8bbf\u95ee\u7684\u7f51\u6bb5\uff0c\u4e0d\u8981\u628a\u6240\u6709 peer \u90fd\u5199\u6210 <code>0.0.0.0\/0<\/code>\u3002<\/p>\n<p>\u5bc6\u94a5\u8f6e\u6362\u4e5f\u8981\u6309\u6b65\u9aa4\u6765\u3002\u5e38\u89c1\u4e8b\u6545\u4e0d\u662f\u201c\u5bc6\u94a5\u5f3a\u5ea6\u4e0d\u591f\u201d\uff0c\u800c\u662f\u66ff\u6362\u4e00\u7aef\u5bc6\u94a5\u540e\u5fd8\u8bb0\u540c\u6b65\u5bf9\u7aef\u3002\u66f4\u7a33\u59a5\u7684\u505a\u6cd5\u662f\u5148\u65b0\u589e peer\uff0c\u9a8c\u8bc1 5 \u5206\u949f\u63e1\u624b\u548c\u4e1a\u52a1\u7aef\u53e3\u90fd\u6b63\u5e38\uff0c\u518d\u5220\u9664\u65e7 peer\uff1b\u4e0d\u8981\u5728 10 \u53f0\u4e91\u670d\u52a1\u5668\u4e0a\u540c\u65f6\u8986\u76d6\u914d\u7f6e\u3002<\/p>\n<h2>\u8def\u7531\u4e0e\u9632\u706b\u5899\uff1a\u63e1\u624b\u6b63\u5e38\u4e0d\u4ee3\u8868\u4e1a\u52a1\u53ef\u8fbe<\/h2>\n<p>\u63e1\u624b\u6b63\u5e38\u4f46\u4e1a\u52a1\u4e0d\u53ef\u8fbe\uff0c\u662f\u7ad9\u70b9\u5230\u7ad9\u70b9\u7ec4\u7f51\u91cc\u6700\u5bb9\u6613\u8bef\u5224\u7684\u573a\u666f\u3002WireGuard \u53ea\u8d1f\u8d23\u628a\u5339\u914d AllowedIPs \u7684\u6d41\u91cf\u52a0\u5bc6\u9001\u7ed9\u5bf9\u7aef\uff0c\u56de\u7a0b\u8def\u7531\u3001\u5185\u6838\u8f6c\u53d1\u548c\u9632\u706b\u5899\u4ecd\u8981\u7531\u64cd\u4f5c\u7cfb\u7edf\u5904\u7406\u3002<\/p>\n<p>\u4ee5 A \u7ad9\u70b9 <code>10.10.0.0\/24<\/code> \u548c B \u7ad9\u70b9 <code>10.20.0.0\/24<\/code> \u4e3a\u4f8b\uff0cB \u4fa7\u4e91\u670d\u52a1\u5668\u82e5\u8981\u8bbf\u95ee A \u4fa7\u5185\u7f51\u4e3b\u673a\uff0c\u81f3\u5c11\u8981\u6ee1\u8db3 4 \u4e2a\u6761\u4ef6\uff1a<\/p>\n<ul>\n<li>A \u4fa7 WireGuard peer \u4e2d\u5305\u542b <code>10.20.0.0\/24<\/code>\uff0cB \u4fa7 peer \u4e2d\u5305\u542b <code>10.10.0.0\/24<\/code>\u3002<\/li>\n<li>\u4e24\u7aef\u5f00\u542f IPv4 \u8f6c\u53d1\uff1a<code>sysctl net.ipv4.ip_forward<\/code> \u8fd4\u56de <code>1<\/code>\u3002<\/li>\n<li>\u9632\u706b\u5899\u5141\u8bb8 <code>wg0<\/code> \u5230\u4e1a\u52a1\u7f51\u5361\u7684\u8f6c\u53d1\uff0c\u4f8b\u5982 <code>nftables<\/code> \u4e2d\u6709\u660e\u786e accept \u89c4\u5219\u3002<\/li>\n<li>\u56de\u7a0b\u8def\u7531\u6307\u56de WireGuard \u7f51\u5173\uff0c\u800c\u4e0d\u662f\u9ed8\u8ba4\u8d70\u516c\u7f51\u51fa\u53e3\u3002<\/li>\n<\/ul>\n<p>\u68c0\u67e5\u8def\u7531\u65f6\uff0c\u4e0d\u8981\u53ea\u770b <code>ip route<\/code>\uff0c\u66f4\u8981\u7528 <code>ip route get &lt;\u76ee\u6807IP&gt;<\/code> \u770b\u5185\u6838\u5b9e\u9645\u51fa\u53e3\u3002\u82e5\u547d\u4e2d\u9ed8\u8ba4\u8def\u7531\u800c\u4e0d\u662f <code>wg0<\/code>\uff0c\u8bf4\u660e AllowedIPs \u6216\u8def\u7531\u4f18\u5148\u7ea7\u6709\u95ee\u9898\u3002\u82e5\u51fa\u53e3\u6b63\u786e\u4f46\u5305\u4e0d\u56de\u6765\uff0c\u53ef\u5728\u4e24\u7aef\u540c\u65f6\u6293\u5305\uff0c\u786e\u8ba4\u6570\u636e\u5305\u505c\u5728\u54ea\u4e00\u8df3\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/wireguard-troubleshooting-cloud-server-routing.webp\" alt=\"WireGuard \u8def\u7531\u4e0e\u9632\u706b\u5899\u68c0\u67e5\u56fe\" loading=\"lazy\" \/><\/p>\n<h2>MTU \u4e0e\u8de8\u533a\u94fe\u8def\uff1a\u5c0f\u5305\u80fd\u901a\uff0c\u5927\u5305\u5931\u8d25\u600e\u4e48\u529e<\/h2>\n<p>\u6709\u4e9b\u95ee\u9898\u8868\u73b0\u5f88\u8ff7\u60d1\uff1a<code>ping<\/code> \u5c0f\u5305\u6b63\u5e38\uff0cSSH \u767b\u5f55\u4e5f\u80fd\u8fdb\uff0c\u4f46\u62c9\u53d6 Git \u4ed3\u5e93\u3001\u4f20\u8f93\u5907\u4efd\u6216\u8bbf\u95ee HTTPS \u9875\u9762\u65f6\u5361\u4f4f\u3002\u8fd9\u7c7b\u95ee\u9898\u5e38\u548c MTU\uff08\u6700\u5927\u4f20\u8f93\u5355\u5143\uff09\u6709\u5173\u3002WireGuard \u4f1a\u589e\u52a0\u52a0\u5bc6\u5c01\u88c5\u5f00\u9500\uff0c\u9ed8\u8ba4 1420 \u7684 MTU \u5728\u8de8\u533a\u6216\u591a\u5c42 NAT \u94fe\u8def\u4e0a\u53ef\u80fd\u504f\u5927\u3002<\/p>\n<p>\u53ef\u4ee5\u7528\u4e0d\u5206\u7247\u63a2\u6d4b\u9010\u6b65\u7f29\u5c0f\u53ef\u7528 MTU\u3002Linux \u4e0b\u5e38\u7528\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-bash\">ping -M do -s 1372 10.20.0.12\nping -M do -s 1320 10.20.0.12\ntracepath 10.20.0.12\n<\/code><\/pre>\n<p>\u5982\u679c 1372 \u5b57\u8282\u5931\u8d25\u30011320 \u5b57\u8282\u6210\u529f\uff0c\u53ef\u628a <code>wg0.conf<\/code> \u4e2d MTU \u5148\u8c03\u4e3a <code>1360<\/code> \u6216 <code>1380<\/code>\uff0c\u518d\u7528\u5907\u4efd\u540c\u6b65\u3001\u955c\u50cf\u62c9\u53d6\u548c HTTPS \u8bbf\u95ee\u9a8c\u8bc1\u3002\u8de8\u5730\u533a\u4e91\u670d\u52a1\u5668\uff08\u8fd0\u884c\u5728\u4e91\u57fa\u7840\u8bbe\u65bd\u4e0a\u7684\u865a\u62df\u670d\u52a1\u5668\uff09\u4e92\u8054\u65f6\uff0c\u5efa\u8bae\u628a MTU \u53c2\u6570\u5199\u5165\u53d8\u66f4\u8bb0\u5f55\uff0c\u907f\u514d\u81ea\u52a8\u5316\u90e8\u7f72\u8986\u76d6\u56de\u9ed8\u8ba4\u503c\u3002<\/p>\n<p>\u94fe\u8def\u8d28\u91cf\u4e5f\u8981\u7528\u6570\u636e\u8bf4\u8bdd\u3002\u53ef\u4ee5\u5728\u4e24\u7aef\u8dd1 60 \u79d2 <code>iperf3<\/code>\uff0c\u8bb0\u5f55 TCP \u91cd\u4f20\u3001\u541e\u5410\u548c\u6296\u52a8\u3002\u82e5\u901a\u9053\u53ea\u627f\u8f7d SSH\u3001\u76d1\u63a7\u548c\u914d\u7f6e\u7ba1\u7406\uff0c\u7a33\u5b9a\u7684 5 \u5230 20 Mbps \u901a\u5e38\u8db3\u591f\uff1b\u82e5\u8fd8\u8981\u4f20\u8f93\u6bcf\u65e5 20GB \u5907\u4efd\uff0c\u5c31\u5e94\u5355\u72ec\u8bc4\u4f30\u516c\u7f51\u5e26\u5bbd\u548c\u5907\u4efd\u7a97\u53e3\u3002\u66f4\u591a\u8d44\u6e90\u89c4\u5212\u53ef\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/server\/\">\u670d\u52a1\u5668\u76f8\u5173\u5185\u5bb9<\/a>\u3002<\/p>\n<h2>\u76d1\u63a7\u548c\u6062\u590d\uff1a\u628a\u201c\u80fd\u8fde\u4e0a\u201d\u53d8\u6210\u201c\u53ef\u7ef4\u62a4\u201d<\/h2>\n<p>WireGuard \u7684\u4f18\u52bf\u662f\u8f7b\u91cf\uff0c\u4f46\u8f7b\u91cf\u4e5f\u610f\u5473\u7740\u4f60\u9700\u8981\u4e3b\u52a8\u8865\u9f50\u76d1\u63a7\u3002\u81f3\u5c11\u5e94\u76d1\u63a7 3 \u7c7b\u6307\u6807\uff1a\u6700\u8fd1\u63e1\u624b\u65f6\u95f4\u3001\u96a7\u9053\u5185\u76ee\u6807\u8fde\u901a\u6027\u3001\u5173\u952e\u4e1a\u52a1\u7aef\u53e3\u53ef\u8fbe\u6027\u3002\u53ea\u770b <code>wg-quick@wg0<\/code> \u670d\u52a1\u72b6\u6001\u662f\u4e0d\u591f\u7684\u3002<\/p>\n<p>\u4e00\u4e2a\u7b80\u5355\u7684\u5de1\u68c0\u811a\u672c\u53ef\u4ee5\u6bcf\u5206\u949f\u68c0\u67e5 latest handshake \u662f\u5426\u8d85\u8fc7 180 \u79d2\uff0c\u5e76\u5bf9\u6838\u5fc3\u8282\u70b9\u6267\u884c\u4e00\u6b21\u96a7\u9053\u5185 ping\uff1a<\/p>\n<pre><code class=\"language-bash\">#!\/usr\/bin\/env bash\npeer_name=\"ops-node-b\"\ntarget_ip=\"10.20.0.12\"\nlast=$(sudo wg show wg0 latest-handshakes | awk 'NR==1{print $2}')\nnow=$(date +%s)\nif [ \"$last\" -eq 0 ] || [ $((now-last)) -gt 180 ]; then\n  echo \"wireguard handshake stale: ${peer_name}\"\nfi\nping -c 2 -W 2 \"$target_ip\" >\/dev\/null || echo \"wireguard tunnel ping failed: ${target_ip}\"\n<\/code><\/pre>\n<p>\u6062\u590d\u6d41\u7a0b\u4e5f\u8981\u5206\u7ea7\u3002\u8f7b\u5fae\u5f02\u5e38\u5148\u544a\u8b66\uff0c\u8fde\u7eed 3 \u6b21\u5de1\u68c0\u5931\u8d25\u518d\u91cd\u542f <code>wg-quick@wg0<\/code>\uff1b\u91cd\u542f\u540e\u4ecd\u5931\u8d25\uff0c\u518d\u8fdb\u5165\u5bc6\u94a5\u3001Endpoint \u548c\u4e0a\u6e38\u7f51\u7edc\u6392\u67e5\u3002\u8fd9\u6837\u80fd\u51cf\u5c11\u201c\u81ea\u52a8\u91cd\u542f\u63a9\u76d6\u6545\u969c\u201d\u7684\u98ce\u9669\u3002<\/p>\n<h2>\u4e00\u6b21\u5178\u578b\u6392\u969c\uff1a\u4ece\u201cSSH \u5076\u53d1\u65ad\u5f00\u201d\u5b9a\u4f4d\u5230 MTU \u4e0e\u56de\u7a0b\u8def\u7531<\/h2>\n<p>\u4e0b\u9762\u7528\u4e00\u4e2a\u5e38\u89c1\u6848\u4f8b\u4e32\u8d77\u6765\u3002\u67d0\u56e2\u961f\u5728 6 \u53f0\u4e91\u670d\u52a1\u5668\u4e4b\u95f4\u5efa\u7acb WireGuard \u8fd0\u7ef4\u901a\u9053\uff0cA \u533a\u8282\u70b9\u53ef\u4ee5\u7a33\u5b9a\u8bbf\u95ee B \u533a\u6570\u636e\u5e93\u4ee3\u7406\uff0c\u4f46\u4ece C \u533a\u8282\u70b9\u901a\u8fc7\u96a7\u9053 SSH \u5230 B \u533a\u65f6\u7ecf\u5e38\u5361\u4f4f\u3002\u6392\u67e5\u65f6\u5148\u770b <code>wg show<\/code>\uff0cC \u5230 B \u7684 latest handshake \u59cb\u7ec8\u5728 30 \u79d2\u4ee5\u5185\uff0c\u8bf4\u660e\u4e0d\u662f\u7aef\u53e3\u6216\u5bc6\u94a5\u95ee\u9898\u3002\u63a5\u7740\u6267\u884c <code>ip route get 10.20.0.12<\/code>\uff0c\u53d1\u73b0 C \u533a\u5230 B \u533a\u96a7\u9053\u5730\u5740\u8d70 <code>wg0<\/code>\uff0c\u4f46 B \u533a\u56de C \u533a\u4e1a\u52a1\u7f51\u6bb5\u8d70\u4e86\u9ed8\u8ba4\u516c\u7f51\u7f51\u5173\u3002\u4fee\u6b63\u56de\u7a0b\u8def\u7531\u540e\uff0c\u5c0f\u6587\u4ef6\u4f20\u8f93\u6062\u590d\uff0c\u4f46\u5927\u6587\u4ef6\u4ecd\u5076\u53d1\u4e2d\u65ad\u3002\u6700\u540e\u7528 <code>ping -M do<\/code> \u53d1\u73b0 1372 \u5b57\u8282\u5931\u8d25\u30011320 \u5b57\u8282\u6210\u529f\uff0c\u628a\u4e24\u7aef MTU \u8c03\u6574\u4e3a 1360 \u540e\uff0c\u8fde\u7eed 3 \u6b21 2GB \u6587\u4ef6\u4f20\u8f93\u90fd\u5b8c\u6210\u3002<\/p>\n<p>\u8fd9\u4e2a\u6848\u4f8b\u8bf4\u660e\uff0cWireGuard \u6392\u969c\u4e0d\u80fd\u53ea\u770b\u5355\u70b9\u914d\u7f6e\u3002\u63e1\u624b\u3001\u8def\u7531\u3001MTU \u548c\u4e1a\u52a1\u7aef\u53e3\u7ecf\u5e38\u540c\u65f6\u5f71\u54cd\u7ed3\u679c\u3002\u82e5\u8fd8\u6d89\u53ca Web \u6027\u80fd\u6216 HTTPS \u8bbf\u95ee\uff0c\u53ef\u5ef6\u4f38\u9605\u8bfb <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/ttfb-hosting-optimization\/\">TTFB \u4e0e\u4e3b\u673a\u4f18\u5316\u6307\u5357<\/a>\uff0c\u7ee7\u7eed\u7528\u201c\u5206\u5c42\u5b9a\u4f4d\u201d\u533a\u5206\u7f51\u7edc\u3001\u5e94\u7528\u548c\u670d\u52a1\u5668\u8d44\u6e90\u74f6\u9888\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/wireguard-troubleshooting-cloud-server-mtu.webp\" alt=\"WireGuard MTU \u4e0e\u8de8\u533a\u94fe\u8def\u6392\u969c\u56fe\" loading=\"lazy\" \/><\/p>\n<h2>\u4e0a\u7ebf\u524d\u6e05\u5355\uff1a\u6bcf\u6b21\u65b0\u589e\u8282\u70b9\u90fd\u6309\u540c\u4e00\u6807\u51c6\u9a8c\u8bc1<\/h2>\n<p>\u65b0\u589e\u4e91\u670d\u52a1\u5668\u3001\u8fc1\u79fb\u673a\u623f\u6216\u8c03\u6574\u5b89\u5168\u7ec4\u65f6\uff0c\u4e0d\u8981\u4e34\u65f6\u51ed\u7ecf\u9a8c\u6539\u914d\u7f6e\u3002\u6211\u4eec\u5efa\u8bae\u628a\u4e0b\u9762\u7684\u6e05\u5355\u56fa\u5316\u6210\u4e0a\u7ebf\u6b65\u9aa4\uff0c\u6bcf\u6b21\u65b0\u589e\u8282\u70b9\u90fd\u7559\u4e0b\u547d\u4ee4\u8f93\u51fa\u548c\u8d1f\u8d23\u4eba\u8bb0\u5f55\uff1a<\/p>\n<ul>\n<li>\u57fa\u7840\u8fde\u901a\uff1a<code>wg show<\/code> \u63e1\u624b\u5728 120 \u79d2\u5185\u66f4\u65b0\uff0c<code>ping -c 20<\/code> \u96a7\u9053 IP \u4e22\u5305\u4e3a 0 \u6216\u6709\u660e\u786e\u94fe\u8def\u89e3\u91ca\u3002<\/li>\n<li>\u8def\u7531\u9a8c\u8bc1\uff1a\u6bcf\u4e2a\u5173\u952e\u76ee\u6807\u6267\u884c <code>ip route get<\/code>\uff0c\u786e\u8ba4\u51fa\u53e3\u4e3a <code>wg0<\/code> \u6216\u9884\u671f\u7f51\u5361\u3002<\/li>\n<li>MTU \u9a8c\u8bc1\uff1a\u81f3\u5c11\u6d4b\u8bd5 1320\u30011360\u30011372 \u4e09\u6863\u5305\u5927\u5c0f\uff0c\u5e76\u8bb0\u5f55\u6700\u7ec8 <code>MTU=<\/code> \u53c2\u6570\u3002<\/li>\n<li>\u4e1a\u52a1\u7aef\u53e3\uff1aSSH\u3001\u76d1\u63a7 Agent\u3001\u914d\u7f6e\u7ba1\u7406\u7aef\u53e3\u5206\u522b\u7528 <code>nc -vz<\/code> \u6216 <code>curl --connect-timeout 3<\/code> \u9a8c\u8bc1\u3002<\/li>\n<li>\u6062\u590d\u6f14\u7ec3\uff1a\u91cd\u542f WireGuard \u670d\u52a1\u3001\u91cd\u542f\u4e91\u670d\u52a1\u5668\u5404 1 \u6b21\uff0c\u786e\u8ba4 3 \u5206\u949f\u5185\u81ea\u52a8\u6062\u590d\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4efd\u6e05\u5355\u4e0d\u8ffd\u6c42\u590d\u6742\uff0c\u800c\u662f\u786e\u4fdd\u6bcf\u4e2a\u8282\u70b9\u90fd\u6309\u540c\u4e00\u53e3\u5f84\u4e0a\u7ebf\u3002\u8282\u70b9\u8d8a\u591a\uff0c\u5dee\u5f02\u5316\u914d\u7f6e\u8d8a\u5bb9\u6613\u53d8\u6210\u98ce\u9669\uff1a\u6709\u7684\u673a\u5668\u5f00\u4e86\u8f6c\u53d1\uff0c\u6709\u7684\u4ecd\u7528\u9ed8\u8ba4 MTU\uff0c\u6709\u7684\u5b89\u5168\u7ec4\u53ea\u5141\u8bb8\u65e7\u516c\u7f51 IP\u3002\u628a\u8fd9\u4e9b\u5dee\u5f02\u5199\u8fdb\u6587\u6863\u548c\u76d1\u63a7\uff0c\u6bd4\u6545\u969c\u5f53\u5929\u7ffb\u804a\u5929\u8bb0\u5f55\u66f4\u53ef\u9760\u3002<\/p>\n<h2>\u603b\u7ed3\uff1a\u628a WireGuard \u5f53\u4f5c\u57fa\u7840\u8bbe\u65bd\uff0c\u800c\u4e0d\u662f\u4e34\u65f6\u5de5\u5177<\/h2>\n<p>WireGuard \u8fd0\u7ef4\u901a\u9053\u4e00\u65e6\u627f\u8f7d\u751f\u4ea7\u8fd0\u7ef4\uff0c\u5c31\u9700\u8981\u50cf\u57fa\u7840\u8bbe\u65bd\u4e00\u6837\u7ba1\u7406\u3002\u603b\u7ed3\u6765\u770b\uff0c\u5efa\u8bae\u5148\u7528\u63e1\u624b\u3001\u8def\u7531\u3001\u7aef\u53e3\u533a\u5206\u6545\u969c\u8fb9\u754c\uff0c\u518d\u68c0\u67e5 UDP \u7aef\u53e3\u3001\u5bc6\u94a5\u3001Endpoint\u3001AllowedIPs\u3001\u8f6c\u53d1\u548c\u56de\u7a0b\u8def\u7531\uff1b\u9047\u5230\u5927\u5305\u5361\u987f\u65f6\u6d4b\u8bd5 MTU\uff0c\u6700\u540e\u7528\u76d1\u63a7\u548c\u6062\u590d\u6f14\u7ec3\u4fdd\u8bc1\u95ee\u9898\u53ef\u53d1\u73b0\u3001\u53ef\u8ffd\u8e2a\u3002<\/p>\n<p>\u5982\u679c\u4f60\u9700\u8981\u4e3a\u591a\u53f0\u4e91\u670d\u52a1\u5668\u5efa\u7acb\u957f\u671f\u53ef\u7ef4\u62a4\u7684\u8fd0\u7ef4\u7f51\u7edc\uff0c\u53ef\u4ee5\u8003\u8651\u5148\u9009 2 \u5230 3 \u4e2a\u6838\u5fc3\u8282\u70b9\u505a\u5c0f\u8303\u56f4\u9a8c\u8bc1\uff0c\u7a33\u5b9a\u8fd0\u884c 7 \u5929\u540e\u518d\u6269\u5c55\u5230\u5168\u90e8\u670d\u52a1\u5668\u3002\u5bf9\u4e8e\u4f7f\u7528 Hostease \u4e91\u670d\u52a1\u5668\u6216\u5176\u4ed6\u4e3b\u673a\u8d44\u6e90\u7684\u56e2\u961f\uff0c\u4e5f\u63a8\u8350\u5728\u4e0a\u7ebf\u524d\u628a\u7f51\u7edc\u89c4\u683c\u3001\u5907\u4efd\u7a97\u53e3\u548c\u5b89\u5168\u7b56\u7565\u4e00\u8d77\u8bc4\u4f30\uff0c\u907f\u514d\u901a\u9053\u672c\u8eab\u53ef\u7528\uff0c\u4f46\u4e1a\u52a1\u6d41\u91cf\u3001\u6743\u9650\u548c\u53d8\u66f4\u6d41\u7a0b\u6ca1\u6709\u540c\u6b65\u6536\u53e3\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u591a\u53f0\u4e91\u670d\u52a1\u5668\u7528 WireGuard \u5efa\u7acb\u8fd0\u7ef4\u901a\u9053\u65f6\uff0c\u672c\u6587\u4ece\u7aef\u53e3\u3001\u5bc6\u94a5\u3001\u8def\u7531\u3001MTU\u3001\u76d1\u63a7\u548c\u6062\u590d\u6d41\u7a0b\u68b3\u7406\u6392\u969c\u6e05\u5355\uff0c\u5e2e\u52a9\u51cf\u5c11\u4e2d\u65ad\u3002<\/p>\n","protected":false},"author":2,"featured_media":32378,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3822],"tags":[3324,111,4740,4739],"class_list":["post-32382","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","tag-wireguard","tag-111","tag-4740","tag-4739"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/wireguard-troubleshooting-cloud-server-cover.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/32382","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=32382"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/32382\/revisions"}],"predecessor-version":[{"id":32383,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/32382\/revisions\/32383"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/32378"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=32382"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=32382"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=32382"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}