{"id":607,"date":"2026-05-14T04:19:02","date_gmt":"2026-05-14T04:19:02","guid":{"rendered":"https:\/\/rocketspacevpn.com\/"},"modified":"2026-05-14T06:20:11","modified_gmt":"2026-05-14T06:20:11","slug":"l2tp","status":"publish","type":"post","link":"https:\/\/rocketspacevpn.com\/zh\/post\/l2tp\/","title":{"rendered":"\u4ec0\u4e48\u662f L2TP\uff1f\u7b2c\u4e8c\u5c42\u96a7\u9053\u534f\u8bae (Layer 2 Tunneling Protocol) \u5b8c\u5168\u6307\u5357"},"content":{"rendered":"<p class=\"wp-block-paragraph\">L2TP\uff08\u7b2c\u4e8c\u5c42\u96a7\u9053\u534f\u8bae\uff09\u662f\u4e00\u79cd\u4f1a\u8bdd\u5c42\u7f51\u7edc\u534f\u8bae\uff0c\u662f\u6784\u5efa\u865a\u62df\u4e13\u7528\u7f51\u7edc (VPN) \u7684\u57fa\u672c\u57fa\u77f3\u3002L2TP \u5728 RFC 2661 \u4e2d\u88ab\u6b63\u5f0f\u5b9a\u4e49\uff0c\u4e3b\u8981\u8fd0\u884c\u5728 OSI \u6a21\u578b\u7684\u6570\u636e\u94fe\u8def\u5c42\uff08\u7b2c\u4e8c\u5c42\uff09\uff0c\u4f46\u5728\u73b0\u4ee3 IP \u7f51\u7edc\u4e2d\uff0c\u5b83\u901a\u5e38\u901a\u8fc7 UDP \u7aef\u53e3 1701 \u8fdb\u884c\u4f20\u8f93\u3002\u5176\u6280\u672f\u672c\u8d28\u5728\u4e8e\u80fd\u591f\u5c01\u88c5\u70b9\u5bf9\u70b9\u534f\u8bae (PPP) \u5e27\uff0c\u4f7f\u5176\u80fd\u591f\u8de8\u8d8a\u5404\u79cd\u53ef\u80fd\u4e0d\u517c\u5bb9\u7684\u5e95\u5c42\u7f51\u7edc\uff08\u5982 IP\u3001\u5e27\u4e2d\u7ee7\u6216 ATM\uff09\u8fdb\u884c\u96a7\u9053\u4f20\u8f93\uff0c\u4ece\u800c\u5728 LAC\uff08L2TP \u8bbf\u95ee\u96c6\u4e2d\u5668\uff09\u548c LNS\uff08L2TP \u7f51\u7edc\u670d\u52a1\u5668\uff09\u4e4b\u95f4\u5efa\u7acb\u903b\u8f91\u4e0a\u7684\u7b2c\u4e8c\u5c42\u8fde\u63a5\u3002\u901a\u8fc7\u521b\u5efa\u8fd9\u79cd\u865a\u62df\u5316\u96a7\u9053\uff0cL2TP \u4f7f\u8fdc\u7a0b\u5ba2\u6237\u7aef\u65e0\u8bba\u8eab\u5904\u4f55\u5730\uff0c\u90fd\u80fd\u8868\u73b0\u5f97\u5982\u540c\u7269\u7406\u8fde\u63a5\u5230\u672c\u5730\u4f01\u4e1a\u7f51\u7edc\u4e00\u6837\u3002\u5b83\u5229\u7528\u63a7\u5236\u901a\u9053\u6765\u7ba1\u7406\u96a7\u9053\u7684\u751f\u547d\u5468\u671f\uff08\u5efa\u7acb\u3001\u7ef4\u62a4\u548c\u62c6\u9664\uff09\uff0c\u5e76\u5229\u7528\u6570\u636e\u901a\u9053\u8fdb\u884c\u5c01\u88c5\u8d1f\u8f7d\u7684\u5b9e\u9645\u4f20\u8f93\u3002\u7136\u800c\uff0c\u4ece\u7eaf\u7cb9\u7684\u4e13\u4e1a\u5b89\u5168\u89d2\u5ea6\u6765\u770b\uff0cL2TP \u6280\u672f\u4e0a\u662f\u201c\u900f\u660e\u201d\u7684\uff1b\u5b83\u63d0\u4f9b\u4e86\u4f20\u8f93\u57fa\u7840\u67b6\u6784\uff0c\u4f46\u7f3a\u4e4f\u5185\u7f6e\u7684\u6570\u636e\u52a0\u5bc6\u6216\u6765\u6e90\u8eab\u4efd\u9a8c\u8bc1\u673a\u5236\u3002\u56e0\u6b64\uff0c\u5b83\u51e0\u4e4e\u5b8c\u5168\u4e0e IPsec \u7ed3\u5408\u4f7f\u7528\uff0c\u6784\u6210 L2TP\/IPsec \u5957\u4ef6\uff0c\u4ece\u800c\u5c06 L2TP \u7684\u96a7\u9053\u7075\u6d3b\u6027\u4e0e Internet \u534f\u8bae\u5b89\u5168\u6846\u67b6\u5f3a\u5927\u7684\u52a0\u5bc6\u5b89\u5168\u6027\u7ed3\u5408\u5728\u4e00\u8d77\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L2TP \u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff1f<\/h2>\n\n\n\n<section id=\"l2tp-workflow\" style=\"font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; max-width: 100%; margin: 20px auto; color: #333; line-height: 1.6; text-align: left; background: transparent;\">\n    \n    <p style=\"margin: 0 0 20px 0; padding: 0; font-size: 16px; color: #333;\">\n        L2TP \u901a\u8fc7\u5c01\u88c5\u6570\u636e\u5305\uff0c\u5e76\u901a\u8fc7\u5728\u7528\u6237\u8bbe\u5907\u4e0e\u8fdc\u7a0b VPN \u670d\u52a1\u5668\u4e4b\u95f4\u5efa\u7acb\u7684\u4e13\u7528 VPN \u96a7\u9053\u8fdb\u884c\u4f20\u8f93\uff0c\u4ece\u800c\u5b9e\u73b0\u5b89\u5168\u901a\u4fe1\u3002\n    <\/p>\n\n    <div style=\"background-color: #f8f9fa; border-radius: 8px; padding: 25px; border: 1px solid #e0e0e0;\">\n        <ul style=\"list-style: none !important; padding: 0 !important; margin: 0 !important;\">\n            <li style=\"margin: 0 0 15px 0 !important; padding: 0 0 0 35px !important; position: relative; list-style: none !important;\">\n                <span style=\"position: absolute; left: 0; top: 2px; background: #1a73e8; color: white; width: 24px; height: 24px; border-radius: 50%; text-align: center; font-size: 14px; line-height: 24px; font-weight: bold; display: block;\">1<\/span>\n                <strong style=\"color: #0d47a1; display: block; margin-bottom: 2px; font-weight: bold;\">\u542f\u52a8 \/ \u53d1\u8d77 (Initiation):<\/strong> \n                \u5f53\u7528\u6237\u4f7f\u7528 L2TP \u534f\u8bae\u5411 VPN \u670d\u52a1\u5668\u53d1\u8d77\u8fde\u63a5\u8bf7\u6c42\u65f6\uff0c\u8be5\u8fc7\u7a0b\u6b63\u5f0f\u5f00\u59cb\n            <\/li>\n            <li style=\"margin: 0 0 15px 0 !important; padding: 0 0 0 35px !important; position: relative; list-style: none !important;\">\n                <span style=\"position: absolute; left: 0; top: 2px; background: #1a73e8; color: white; width: 24px; height: 24px; border-radius: 50%; text-align: center; font-size: 14px; line-height: 24px; font-weight: bold; display: block;\">2<\/span>\n                <strong style=\"color: #0d47a1; display: block; margin-bottom: 2px; font-weight: bold;\">\u96a7\u9053\u5efa\u7acb (Tunnel Establishment):<\/strong> \n                L2TP \u521b\u5efa\u4e00\u4e2a\u865a\u62df\u96a7\u9053\uff0c\u5145\u5f53\u4e00\u79cd\u4f20\u8f93\u673a\u5236\uff0c\u4e3a\u901a\u8fc7\u4e92\u8054\u7f51\u8fdb\u884c\u6570\u636e\u4f20\u8f93\u505a\u597d\u51c6\u5907\u3002\n            <\/li>\n            <li style=\"margin: 0 0 15px 0 !important; padding: 0 0 0 35px !important; position: relative; list-style: none !important;\">\n                <span style=\"position: absolute; left: 0; top: 2px; background: #1a73e8; color: white; width: 24px; height: 24px; border-radius: 50%; text-align: center; font-size: 14px; line-height: 24px; font-weight: bold; display: block;\">3<\/span>\n                <strong style=\"color: #0d47a1; display: block; margin-bottom: 2px; font-weight: bold;\">\u52a0\u5bc6\uff08IPsec \u96c6\u6210\uff09<\/strong> \n                \u7531\u4e8e L2TP \u7f3a\u4e4f\u539f\u751f\u52a0\u5bc6\u529f\u80fd\uff0c\u56e0\u6b64\u91c7\u7528 IPsec \u5957\u4ef6\u5bf9\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\uff0c\u4ece\u800c\u63d0\u4f9b\u5fc5\u8981\u7684\u5b89\u5168\u6027\u53ca\u8eab\u4efd\u9a8c\u8bc1\n            <\/li>\n            <li style=\"margin: 0 0 15px 0 !important; padding: 0 0 0 35px !important; position: relative; list-style: none !important;\">\n                <span style=\"position: absolute; left: 0; top: 2px; background: #1a73e8; color: white; width: 24px; height: 24px; border-radius: 50%; text-align: center; font-size: 14px; line-height: 24px; font-weight: bold; display: block;\">4<\/span>\n                <strong style=\"color: #0d47a1; display: block; margin-bottom: 2px; font-weight: bold;\">\u5b89\u5168\u4f20\u8f93 (Secure Transit):<\/strong> \n                \u73b0\u5df2\u52a0\u5bc6\u7684\u6d41\u91cf\u901a\u8fc7\u5efa\u7acb\u597d\u7684\u96a7\u9053\u5728\u516c\u5171\u4e92\u8054\u7f51\u4e2d\u4f20\u8f93\uff0c\u5e76\u53d7\u5230\u4fdd\u62a4\u514d\u53d7\u5916\u90e8\u5a01\u80c1\n            <\/li>\n            <li style=\"margin: 0 !important; padding: 0 0 0 35px !important; position: relative; list-style: none !important;\">\n                <span style=\"position: absolute; left: 0; top: 2px; background: #1a73e8; color: white; width: 24px; height: 24px; border-radius: 50%; text-align: center; font-size: 14px; line-height: 24px; font-weight: bold; display: block;\">5<\/span>\n                <strong style=\"color: #0d47a1; display: block; margin-bottom: 2px; font-weight: bold;\">\u89e3\u5bc6\u4e0e\u4ea4\u4ed8:<\/strong> \n                \u5230\u8fbe\u76ee\u7684\u5730\u540e\uff0cVPN \u670d\u52a1\u5668\u4f1a\u89e3\u5bc6\u8d1f\u8f7d\u6570\u636e\uff0c\u5e76\u5c06\u539f\u59cb\u6d41\u91cf\u8f6c\u53d1\u5230\u9884\u5b9a\u7684\u5185\u90e8\u8d44\u6e90\u6216\u7f51\u7ad9\n            <\/li>\n        <\/ul>\n    <\/div>\n\n    <p style=\"margin: 20px 0 0 0; padding: 0 0 0 15px; font-style: italic; color: #5f6368; border-left: 4px solid #1a73e8; font-size: 15px;\">\n        <strong>\u5907\u6ce8:<\/strong> \u7531\u4e8e L2TP \u672c\u8eab\u4e0d\u5305\u542b\u52a0\u5bc6\u529f\u80fd\uff0c\u56e0\u6b64\u4f7f\u7528 IPsec \u5bf9\u4e8e\u786e\u4fdd\u7aef\u5230\u7aef\u7684\u6570\u636e\u4fdd\u62a4\u81f3\u5173\u91cd\u8981\n    <\/p>\n<\/section>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"501\" src=\"https:\/\/rocketspacevpn.com\/wp-content\/uploads\/2026\/05\/How-does-L2TP-work-1024x501.png\" alt=\"L2TP \u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff1f\" class=\"wp-image-612\" srcset=\"\" sizes=\"(max-width: 1024px) 100vw, 1024px\" data-srcset=\"\" \/><figcaption class=\"wp-element-caption\">L2TP \u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff1f<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">L2TP \u7684\u5173\u952e\u7279\u6027<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e8c\u5c42\u96a7\u9053\u534f\u8bae (L2TP) \u4ee5\u5176\u5f3a\u5927\u7684\u96a7\u9053\u5efa\u7acb\u80fd\u529b\u800c\u8457\u79f0\uff0c\u4e13\u95e8\u7528\u4e8e\u521b\u5efa\u7a33\u5b9a\u7684\u865a\u62df\u5316\u96a7\u9053\uff0c\u4ece\u800c\u4fc3\u8fdb\u7f51\u7edc\u6d41\u91cf\u5728\u516c\u5171\u57fa\u7840\u8bbe\u65bd\u4e0a\u7684\u4f20\u8f93\u3002\u5176\u6838\u5fc3\u4f18\u52bf\u4e4b\u4e00\u662f\u5353\u8d8a\u7684\u8de8\u5e73\u53f0\u517c\u5bb9\u6027\uff1b\u7531\u4e8e L2TP\/IPsec \u5df2\u539f\u751f\u96c6\u6210\u5230\u5305\u62ec Windows\u3001macOS\u3001Linux\u3001Android \u548c iOS \u5728\u5185\u7684\u51e0\u4e4e\u6240\u6709\u4e3b\u6d41\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u56e0\u6b64\u5b83\u5386\u6765\u662f\u4f01\u4e1a\u7ea7 VPN \u90e8\u7f72\u7684\u9996\u9009\u3002\u9664\u4e86\u6613\u7528\u6027\u4e4b\u5916\uff0c\u8be5\u534f\u8bae\u901a\u8fc7\u591a\u534f\u8bae\u652f\u6301\u63d0\u4f9b\u4e86\u663e\u8457\u7684\u7075\u6d3b\u6027\uff0c\u4f7f\u5176\u80fd\u591f\u5728\u4e0d\u540c\u73af\u5883\u4e2d\u4f20\u8f93\u5404\u79cd\u7c7b\u578b\u7684\u7f51\u7edc\u6d41\u91cf\u3002\u6b64\u5916\uff0cL2TP \u63d0\u4f9b\u4e86\u5168\u9762\u7684\u8eab\u4efd\u9a8c\u8bc1\u9009\u9879\u5957\u4ef6\uff0c\u652f\u6301 PAP\u3001CHAP\u3001MS-CHAP \u548c EAP \u7b49\u65b9\u6cd5\u3002\u5f53\u4e0e IPsec \u6846\u67b6\u96c6\u6210\u65f6\uff0c\u8fd9\u4e9b\u80fd\u529b\u5f97\u5230\u8fdb\u4e00\u6b65\u589e\u5f3a\uff0c\u5305\u62ec\u57fa\u4e8e\u8bc1\u4e66\u7684\u8eab\u4efd\u9a8c\u8bc1\uff0c\u4ece\u800c\u786e\u4fdd\u4e86\u9ad8\u5ea6\u7684\u8eab\u4efd\u9a8c\u8bc1\u548c\u4f1a\u8bdd\u5b8c\u6574\u6027\u3002<\/p>\n\n\n\n<div id=\"l2tp-comparison-block\" style=\"max-width: 100%; margin: 20px auto; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333;\">\n    <div style=\"display: flex; flex-wrap: wrap; gap: 20px;\">\n        \n        <!-- Advantages Column -->\n        <section style=\"flex: 1; min-width: 300px; background: #ffffff; border-radius: 12px; padding: 25px; border-top: 6px solid #1a73e8; box-shadow: 0 4px 15px rgba(0,0,0,0.05); display: flex; flex-direction: column;\">\n            <h2 style=\"color: #1a73e8; font-size: 1.5rem; margin: 0 0 20px 0; display: flex; align-items: center; border: none; background: none; padding: 0;\">\n                <span style=\"margin-right: 10px; font-size: 1.2rem;\">\u25b2<\/span> L2TP\/IPsec \u7684\u4f18\u52bf\n            <\/h2>\n            \n            <div style=\"margin-bottom: 15px; padding: 15px; border-radius: 8px; background: #e8f0fe;\">\n                <h3 style=\"font-size: 1.1rem; margin: 0 0 8px 0; color: #0d47a1; font-weight: bold; border: none;\">\u914d\u5408 IPsec \u7684\u5f3a\u5b89\u5168\u6027<\/h3>\n                <p style=\"font-size: 0.95rem; margin: 0; color: #444; line-height: 1.5;\">\u5f53\u4e0e IPsec \u7ed3\u5408\u4f7f\u7528\u65f6\uff0cL2TP \u53ef\u63d0\u4f9b\u53ef\u9760\u7684\u52a0\u5bc6\u548c\u8eab\u4efd\u9a8c\u8bc1\u6807\u51c6\uff0c\u8fd9\u88ab\u8ba4\u4e3a\u8db3\u4ee5\u4fdd\u969c\u8bb8\u591a\u4f01\u4e1a\u7ea7\u5e94\u7528\u7684\u5b89\u5168<\/p>\n            <\/div>\n\n            <div style=\"margin-bottom: 15px; padding: 15px; border-radius: 8px; background: #e8f0fe;\">\n                <h3 style=\"font-size: 1.1rem; margin: 0 0 8px 0; color: #0d47a1; font-weight: bold; border: none;\">\u5e7f\u6cdb\u652f\u6301<\/h3>\n                <p style=\"font-size: 0.95rem; margin: 0; color: #444; line-height: 1.5;\">\u5927\u591a\u6570\u4e3b\u6d41\u64cd\u4f5c\u7cfb\u7edf\u90fd\u5305\u542b\u539f\u751f\u652f\u6301\uff0c\u8fd9\u610f\u5473\u7740\u7528\u6237\u901a\u5e38\u4e0d\u9700\u8981\u5b89\u88c5\u989d\u5916\u7684\u7b2c\u4e09\u65b9\u8f6f\u4ef6<\/p>\n            <\/div>\n\n            <div style=\"margin-bottom: 15px; padding: 15px; border-radius: 8px; background: #e8f0fe;\">\n                <h3 style=\"font-size: 1.1rem; margin: 0 0 8px 0; color: #0d47a1; font-weight: bold; border: none;\">\u7a33\u5b9a\u7684\u8fde\u63a5<\/h3>\n                <p style=\"font-size: 0.95rem; margin: 0; color: #444; line-height: 1.5;\">L2TP \u4ee5\u5728\u5404\u79cd\u590d\u6742\u7684\u7f51\u7edc\u73af\u5883\u4e2d\u7ef4\u6301\u53ef\u9760\u4e14\u4e00\u81f4\u7684 VPN \u8fde\u63a5\u800c\u95fb\u540d<\/p>\n            <\/div>\n\n            <div style=\"margin: 0; padding: 15px; border-radius: 8px; background: #e8f0fe;\">\n                <h3 style=\"font-size: 1.1rem; margin: 0 0 8px 0; color: #0d47a1; font-weight: bold; border: none;\">\u6613\u4e8e\u90e8\u7f72<\/h3>\n                <p style=\"font-size: 0.95rem; margin: 0; color: #444; line-height: 1.5;\">\u7531\u4e8e\u539f\u751f\u652f\u6301\u975e\u5e38\u666e\u904d\uff0c\u65e0\u8bba\u662f\u5bf9\u4e8e\u4f01\u4e1a\u8fd8\u662f\u4e2a\u4eba\u7528\u6237\uff0c\u914d\u7f6e L2TP\/IPsec \u90fd\u76f8\u5bf9\u7b80\u5355\u76f4\u63a5<\/p>\n            <\/div>\n        <\/section>\n\n        <!-- Disadvantages Column -->\n        <section style=\"flex: 1; min-width: 300px; background: #ffffff; border-radius: 12px; padding: 25px; border-top: 6px solid #5f6368; box-shadow: 0 4px 15px rgba(0,0,0,0.05); display: flex; flex-direction: column;\">\n            <h2 style=\"color: #5f6368; font-size: 1.5rem; margin: 0 0 20px 0; display: flex; align-items: center; border: none; background: none; padding: 0;\">\n                <span style=\"margin-right: 10px; font-size: 1.2rem;\">\u25bc<\/span> L2TP\/IPsec \u7684\u7f3a\u70b9\n            <\/h2>\n\n            <div style=\"margin-bottom: 15px; padding: 15px; border-radius: 8px; background: #f1f3f4;\">\n                <h3 style=\"font-size: 1.1rem; margin: 0 0 8px 0; color: #333; font-weight: bold; border: none;\">\u901f\u5ea6\u8f83\u6162<\/h3>\n                <p style=\"font-size: 0.95rem; margin: 0; color: #444; line-height: 1.5;\">L2TP\/IPsec \u91c7\u7528\u53cc\u91cd\u5c01\u88c5\u6280\u672f\uff0c\u8fd9\u4f1a\u663e\u8457\u589e\u52a0\u5f00\u9500\uff0c\u5e76\u4e14\u4e0e\u73b0\u4ee3\u534f\u8bae\u76f8\u6bd4\u53ef\u80fd\u4f1a\u964d\u4f4e\u901f\u5ea6<\/p>\n            <\/div>\n\n            <div style=\"margin-bottom: 15px; padding: 15px; border-radius: 8px; background: #f1f3f4;\">\n                <h3 style=\"font-size: 1.1rem; margin: 0 0 8px 0; color: #333; font-weight: bold; border: none;\">\u9632\u706b\u5899\u9650\u5236<\/h3>\n                <p style=\"font-size: 0.95rem; margin: 0; color: #444; line-height: 1.5;\">\u901a\u5e38\u4f7f\u7528 UDP \u7aef\u53e3 500 \u548c 4500\uff0c\u8fd9\u4e9b\u7aef\u53e3\u7ecf\u5e38\u6210\u4e3a\u9650\u5236\u6027\u9632\u706b\u5899\u6216 ISP\uff08\u4e92\u8054\u7f51\u670d\u52a1\u63d0\u4f9b\u5546\uff09\u62e6\u622a\u548c\u5c01\u9501\u7684\u76ee\u6807<\/p>\n            <\/div>\n\n            <div style=\"margin-bottom: 15px; padding: 15px; border-radius: 8px; background: #f1f3f4;\">\n                <h3 style=\"font-size: 1.1rem; margin: 0 0 8px 0; color: #333; font-weight: bold; border: none;\">\u65e0\u5185\u7f6e\u52a0\u5bc6<\/h3>\n                <p style=\"font-size: 0.95rem; margin: 0; color: #444; line-height: 1.5;\">L2TP \u672c\u8eab\u5e76\u4e0d\u5bf9\u6d41\u91cf\u8fdb\u884c\u52a0\u5bc6\uff1b\u5b83\u4ec5\u5145\u5f53\u96a7\u9053\uff0c\u56e0\u6b64\u82e5\u8981\u5b89\u5168\u4f7f\u7528\uff0c\u5fc5\u987b\u96c6\u6210 IPsec<\/p>\n            <\/div>\n\n            <div style=\"margin: 0; padding: 15px; border-radius: 8px; background: #f1f3f4;\">\n                <h3 style=\"font-size: 1.1rem; margin: 0 0 8px 0; color: #333; font-weight: bold; border: none;\">\u9648\u65e7\u7684\u66ff\u4ee3\u65b9\u6848<\/h3>\n                <p style=\"font-size: 0.95rem; margin: 0; color: #444; line-height: 1.5;\">\u8bf8\u5982 WireGuard \u548c OpenVPN \u4e4b\u7c7b\u7684\u8f83\u65b0\u534f\u8bae\u63d0\u4f9b\u4e86\u66f4\u597d\u7684\u6027\u80fd\u3001\u66f4\u9ad8\u7684\u6548\u7387\u4ee5\u53ca\u66f4\u7b80\u5355\u3001\u66f4\u73b0\u4ee3\u7684\u914d\u7f6e\u65b9\u5f0f<\/p>\n            <\/div>\n        <\/section>\n        \n    <\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">L2TP \u5b89\u5168\u5417\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L2TP \u7684\u5b89\u5168\u6027\u662f\u4e00\u4e2a\u5fae\u5999\u7684\u8bdd\u9898\uff0c\u56e0\u4e3a\u8be5\u534f\u8bae\u672c\u8eab\u5e76\u4e0d\u5177\u5907\u5185\u7f6e\u7684\u6570\u636e\u52a0\u5bc6\u529f\u80fd\uff0c\u56e0\u6b64\u5176\u672c\u8d28\u4e0a\u5e76\u4e0d\u5b89\u5168\u3002\u7136\u800c\uff0c\u5f53 L2TP \u4e0e IPsec \u7ed3\u5408\u4f7f\u7528\u65f6\uff0c\u53ea\u8981\u5b9e\u73b0\u548c\u914d\u7f6e\u5f97\u5f53\uff0c\u901a\u5e38\u88ab\u8ba4\u4e3a\u662f\u4e00\u4e2a\u5b89\u5168\u7684\u89e3\u51b3\u65b9\u6848\u3002L2TP\/IPsec \u8fde\u63a5\u7684\u6574\u4f53\u5b8c\u6574\u6027\u5f88\u5927\u7a0b\u5ea6\u4e0a\u53d6\u51b3\u4e8e\u51e0\u4e2a\u5173\u952e\u56e0\u7d20\uff0c\u5305\u62ec\u4f7f\u7528\u5f3a\u52a0\u5bc6\u7b97\u6cd5\u3001\u5e94\u7528\u53ef\u9760\u7684\u8eab\u4efd\u9a8c\u8bc1\u65b9\u6cd5\uff0c\u4ee5\u53ca\u5728\u6b63\u786e\u7684 IPsec \u914d\u7f6e\u4e0b\u7ef4\u62a4\u66f4\u65b0\u7684\u8f6f\u4ef6\u5b9e\u73b0\u3002\u5c3d\u7ba1\u6709\u7740\u8fd9\u4e9b\u7a33\u5065\u7684\u5b89\u5168\u6807\u51c6\uff0c\u884c\u4e1a\u5185\u4ecd\u5728\u53d1\u751f\u8f6c\u53d8\uff1b\u8bb8\u591a VPN \u670d\u52a1\u5546\u73b0\u5728\u5f00\u59cb\u4f18\u5148\u91c7\u7528 WireGuard \u548c OpenVPN \u7b49\u73b0\u4ee3\u534f\u8bae\u3002\u8fd9\u4e9b\u8f83\u65b0\u7684\u66ff\u4ee3\u65b9\u6848\u5f80\u5f80\u66f4\u53d7\u9752\u7750\uff0c\u56e0\u4e3a\u5b83\u4eec\u5728\u4e0d\u635f\u5bb3\u7528\u6237\u6240\u671f\u671b\u7684\u5b89\u5168\u6c34\u5e73\u7684\u524d\u63d0\u4e0b\uff0c\u63d0\u4f9b\u4e86\u663e\u8457\u63d0\u5347\u7684\u901f\u5ea6\u548c\u6548\u7387\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L2TP \u4e0e\u5176\u4ed6 VPN \u534f\u8bae\uff1a\u6280\u672f\u5bf9\u6bd4<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"p-rc_531eb3fbb768a16b-27\">\u5728\u5c06 L2TP \u4e0e\u5176\u524d\u8eab PPTP \u8fdb\u884c\u8bc4\u4f30\u5bf9\u6bd4\u65f6\uff0c\u6700\u5173\u952e\u7684\u533a\u522b\u5728\u4e8e\u5b83\u4eec\u7684\u5b89\u5168\u6027\u548c\u53ef\u9760\u6027\u3002\u867d\u7136\u8fd9\u4e24\u79cd\u534f\u8bae\u6709\u7740\u5171\u540c\u7684\u5386\u53f2\u6e0a\u6e90\uff0c\u4e14\u90fd\u5177\u5907\u6781\u9ad8\u7684\u8bbe\u5907\u517c\u5bb9\u6027\uff0c\u4f46 PPTP \u5982\u4eca\u7531\u4e8e\u52a0\u5bc6\u6807\u51c6\u5b58\u5728\u6f0f\u6d1e\uff0c\u5df2\u57fa\u672c\u88ab\u5f03\u7528\u5e76\u88ab\u89c6\u4e3a\u4e0d\u5b89\u5168\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0cL2TP\/IPsec \u901a\u8fc7\u5f3a\u52a0\u5bc6\u63d0\u4f9b\u4e86\u7a33\u5065\u7684\u5b89\u5168\u5c42\uff0c\u5e76\u4fdd\u6301\u4e86\u4e2d\u7b49\u6c34\u5e73\u7684\u901f\u5ea6\uff0c\u5bf9\u4e8e\u90a3\u4e9b\u4f7f\u7528 PPTP \u4f1a\u5e26\u6765\u91cd\u5927\u5b89\u5168\u98ce\u9669\u7684\u9057\u7559\u7cfb\u7edf\u6765\u8bf4\uff0c\u5b83\u662f\u4e00\u4e2a\u53ef\u9760\u7684\u66ff\u4ee3\u65b9\u6848\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 L2TP \u4e0e OpenVPN \u7684\u535a\u5f08\u4e2d\uff0c\u540e\u8005\u51ed\u501f\u5176\u7075\u6d3b\u6027\u548c\u5f00\u6e90\u57fa\u7840\u8131\u9896\u800c\u51fa\uff0c\u5e76\u5728\u6280\u672f\u793e\u533a\u4e2d\u8d62\u5f97\u4e86\u5e7f\u6cdb\u4fe1\u4efb\u3002\u5c3d\u7ba1\u8fd9\u4e24\u79cd\u534f\u8bae\u90fd\u80fd\u63d0\u4f9b\u9ad8\u5f3a\u5ea6\u5b89\u5168\u6027\u548c\u5e73\u8861\u7684\u901f\u5ea6\uff0c\u4f46 OpenVPN \u5728\u7ed5\u8fc7\u9650\u5236\u6027\u9632\u706b\u5899\u65b9\u9762\u8981\u6709\u6548\u5f97\u591a\uff0c\u800c L2TP \u5728\u9ad8\u5ea6\u53d7\u63a7\u7684\u7f51\u7edc\u73af\u5883\u4e2d\u5f80\u5f80\u8868\u73b0\u6323\u624e\u3002\u867d\u7136 L2TP \u5728\u5927\u591a\u6570\u64cd\u4f5c\u7cfb\u7edf\u4e0a\u901a\u5e38\u66f4\u5bb9\u6613\u8fdb\u884c\u539f\u751f\u914d\u7f6e\uff0c\u4f46\u5bf9\u4e8e\u9700\u8981\u9ad8\u5ea6\u9002\u5e94\u6027\u548c\u201c\u6781\u5f3a\u201d\u5b89\u5168\u6846\u67b6\u7684\u7528\u6237\u6765\u8bf4\uff0cOpenVPN \u4ecd\u7136\u662f\u9996\u9009\u6807\u51c6\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"p-rc_531eb3fbb768a16b-29\">\u6700\u7ec8\uff0cWireGuard \u7684\u5174\u8d77\u6807\u5fd7\u7740\u5411\u73b0\u4ee3\u4f18\u5316\u7684\u91cd\u5927\u8f6c\u53d8\uff0c\u5b83\u540c\u65f6\u517c\u987e\u4e86\u901f\u5ea6\u548c\u67b6\u6784\u7684\u7b80\u6d01\u6027\u3002\u4e0e\u65e5\u76ca\u9648\u65e7\u7684 L2TP\/IPsec \u6807\u51c6\u76f8\u6bd4\uff0cWireGuard \u91c7\u7528\u4e86\u590d\u6742\u6027\u663e\u8457\u964d\u4f4e\u7684\u8f7b\u91cf\u7ea7\u4ee3\u7801\u5e93\uff0c\u4ece\u800c\u4e3a\u79fb\u52a8\u7528\u6237\u5e26\u6765\u4e86\u6781\u5feb\u7684\u901f\u5ea6\u548c\u66f4\u9ad8\u7684\u7535\u6c60\u6548\u7387\u3002\u867d\u7136 L2TP\/IPsec \u4ecd\u662f\u4e00\u4e2a\u5b89\u5168\u4e14\u53ef\u9760\u7684\u9057\u7559\u9009\u9879\uff0c\u4f46 WireGuard \u51ed\u501f\u5176\u5353\u8d8a\u7684\u6027\u80fd\u548c\u5c16\u7aef\u7684\u52a0\u5bc6\u5f3a\u5ea6\uff0c\u6b63\u8fc5\u901f\u6210\u4e3a\u73b0\u4ee3 VPN \u670d\u52a1\u7684\u884c\u4e1a\u6807\u6746\u3002<\/p>\n\n\n\n<section style=\"font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; max-width: 100%; margin: 40px auto; color: #333; line-height: 1.6; background-color: #ffffff; padding: 30px; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.05); text-align: left;\">\n    <h2 style=\"color: #1a73e8; text-align: center; font-size: 2rem; margin: 0 0 30px 0 !important; border-bottom: 2px solid #e8f0fe !important; padding: 0 0 15px 0 !important; font-weight: bold; border-top: none; border-left: none; border-right: none;\">\u6280\u672f\u5e38\u89c1\u95ee\u9898\u89e3\u7b54 (FAQ)\uff1a\u7b2c\u4e8c\u5c42\u96a7\u9053\u534f\u8bae (L2TP)<\/h2>\n    \n    <!-- FAQ Item 1 -->\n    <div style=\"margin-bottom: 25px; border-bottom: 1px solid #f0f4f8; padding-bottom: 20px;\">\n        <h3 style=\"color: #0d47a1; font-size: 1.2rem; margin: 0 0 10px 0 !important; display: flex; align-items: flex-start; font-weight: 600; background: none; border: none; padding: 0;\">\n            <span style=\"color: #1a73e8; margin-right: 10px;\">\u95ee:<\/span>\n            L2TP\/IPsec \u7684\u5177\u4f53\u7aef\u53e3\u8981\u6c42\u662f\u4ec0\u4e48\uff1f\n        <\/h3>\n        <div style=\"padding-left: 30px; color: #5f6368;\">\n            <p style=\"margin: 0 !important; padding: 0; line-height: 1.6;\">A\uff1a \u6807\u51c6\u7684 L2TP\/IPsec \u5b9e\u73b0\u9700\u8981\u5f00\u653e\u4e09\u4e2a\u7279\u5b9a\u7aef\u53e3\uff1a\u7528\u4e8e IKE\uff08\u4e92\u8054\u7f51\u5bc6\u94a5\u4ea4\u6362\uff09\u7684 UDP \u7aef\u53e3 500\u3001\u7528\u4e8e NAT \u7a7f\u8d8a\uff08NAT Traversal\uff09\u7684 UDP \u7aef\u53e3 4500\uff0c\u4ee5\u53ca\u7528\u4e8e L2TP \u6d41\u91cf\u672c\u8eab\u7684 UDP \u7aef\u53e3 1701\u3002\u786e\u4fdd\u9632\u706b\u5899\u5141\u8bb8\u8fd9\u4e9b\u7aef\u53e3\u901a\u8fc7\uff0c\u5bf9\u4e8e\u6210\u529f\u5efa\u7acb\u96a7\u9053\u81f3\u5173\u91cd\u8981\u3002<\/p>\n        <\/div>\n    <\/div>\n\n    <!-- FAQ Item 2 -->\n    <div style=\"margin-bottom: 25px; border-bottom: 1px solid #f0f4f8; padding-bottom: 20px;\">\n        <h3 style=\"color: #0d47a1; font-size: 1.2rem; margin: 0 0 10px 0 !important; display: flex; align-items: flex-start; font-weight: 600; background: none; border: none; padding: 0;\">\n            <span style=\"color: #1a73e8; margin-right: 10px;\">\u95ee:<\/span>\n            \u53cc\u91cd\u5c01\u88c5\u5982\u4f55\u5f71\u54cd\u6700\u5927\u4f20\u8f93\u5355\u5143 (MTU)\uff1f\n        <\/h3>\n        <div style=\"padding-left: 30px; color: #5f6368;\">\n            <p style=\"margin: 0 !important; padding: 0; line-height: 1.6;\">\u7531\u4e8e L2TP\/IPsec \u4f1a\u5c06\u6570\u636e\u5c01\u88c5\u5728 L2TP \u548c IPsec \u62a5\u5934\u4e2d\uff0c\u8fd9\u4f1a\u7ed9\u6bcf\u4e2a\u6570\u636e\u5305\u589e\u52a0\u663e\u8457\u7684\u5f00\u9500\u3002\u8fd9\u901a\u5e38\u9700\u8981\u51cf\u5c0f MTU \u5927\u5c0f\uff08\u901a\u5e38\u964d\u81f3 1400 \u6216 1280 \u5b57\u8282\uff09\u4ee5\u9632\u6b62\u6570\u636e\u5305\u5206\u7247\uff0c\u5426\u5219\u53ef\u80fd\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u6216\u8fde\u63a5\u4e2d\u65ad\u3002<\/p>\n        <\/div>\n    <\/div>\n\n    <!-- FAQ Item 3 -->\n    <div style=\"margin-bottom: 25px; border-bottom: 1px solid #f0f4f8; padding-bottom: 20px;\">\n        <h3 style=\"color: #0d47a1; font-size: 1.2rem; margin: 0 0 10px 0 !important; display: flex; align-items: flex-start; font-weight: 600; background: none; border: none; padding: 0;\">\n            <span style=\"color: #1a73e8; margin-right: 10px;\">\u95ee:<\/span>\n            L2TP \u8bbf\u95ee\u96c6\u4e2d\u5668 (LAC) \u548c L2TP \u7f51\u7edc\u670d\u52a1\u5668 (LNS) \u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f\n        <\/h3>\n        <div style=\"padding-left: 30px; color: #5f6368;\">\n            <p style=\"margin: 0 !important; padding: 0; line-height: 1.6;\">LAC \u662f\u7269\u7406\u4e0a\u7ec8\u6b62\u6765\u81ea\u7528\u6237\u7684\u547c\u53eb\u6216\u8fde\u63a5\u5e76\u5c06\u6d41\u91cf\u96a7\u9053\u4f20\u8f93\u81f3 LNS \u7684\u8bbe\u5907\u3002LNS \u662f L2TP \u4f1a\u8bdd\u7684\u903b\u8f91\u7ec8\u6b62\u70b9\uff0c\u5728\u6b64\u5904 PPP \u5e27\u88ab\u89e3\u5c01\u88c5\u5e76\u8fdb\u884c\u5904\u7406\uff0c\u4ee5\u5b9e\u73b0\u5bf9\u5185\u90e8\u7f51\u7edc\u7684\u8bbf\u95ee\u3002<\/p>\n        <\/div>\n    <\/div>\n\n    <!-- FAQ Item 4 -->\n    <div style=\"margin-bottom: 25px; border-bottom: 1px solid #f0f4f8; padding-bottom: 20px;\">\n        <h3 style=\"color: #0d47a1; font-size: 1.2rem; margin: 0 0 10px 0 !important; display: flex; align-items: flex-start; font-weight: 600; background: none; border: none; padding: 0;\">\n            <span style=\"color: #1a73e8; margin-right: 10px;\">\u95ee:<\/span>\n            \u4e3a\u4ec0\u4e48\u5728\u5b89\u5168\u5ba1\u8ba1\u4e2d L2TP \u88ab\u89c6\u4e3a\u4e00\u79cd\u201c\u900f\u660e\u201d\u534f\u8bae\uff1f\n        <\/h3>\n        <div style=\"padding-left: 30px; color: #5f6368;\">\n            <p style=\"margin: 0 !important; padding: 0; line-height: 1.6;\">\u5728\u6280\u672f\u5ba1\u8ba1\u4e2d\uff0cL2TP \u88ab\u6807\u8bb0\u4e3a\u201c\u900f\u660e\u201d\uff0c\u662f\u56e0\u4e3a\u5b83\u4ec5\u63d0\u4f9b\u96a7\u9053\u7ed3\u6784\uff0c\u800c\u4e0d\u5bf9\u6709\u6548\u8f7d\u8377\u8fdb\u884c\u4fee\u6539\u6216\u4fdd\u62a4\u3002\u5b83\u4e25\u683c\u8d1f\u8d23\u4f1a\u8bdd\u5c42\u7684\u79fb\u52a8\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u5b89\u5168\u4e13\u4e1a\u4eba\u58eb\u5f3a\u5236\u8981\u6c42\u4f7f\u7528 IPsec\uff0c\u4ee5\u63d0\u4f9b L2TP \u6240\u7f3a\u4e4f\u7684\u52a0\u5bc6\u5c42\u3002<\/p>\n        <\/div>\n    <\/div>\n\n    <!-- FAQ Item 5 -->\n    <div style=\"margin-bottom: 0;\">\n        <h3 style=\"color: #0d47a1; font-size: 1.2rem; margin: 0 0 10px 0 !important; display: flex; align-items: flex-start; font-weight: 600; background: none; border: none; padding: 0;\">\n            <span style=\"color: #1a73e8; margin-right: 10px;\">\u95ee:<\/span>\n            L2TP \u662f\u5426\u652f\u6301\u9664 IP \u4ee5\u5916\u7684\u591a\u534f\u8bae\u6d41\u91cf\uff1f\n        <\/h3>\n        <div style=\"padding-left: 30px; color: #5f6368;\">\n            <p style=\"margin: 0 !important; padding: 0; line-height: 1.6;\">\u662f\u7684\u3002L2TP \u663e\u8457\u7684\u6280\u672f\u4f18\u52bf\u4e4b\u4e00\u662f\u5b83\u80fd\u591f\u96a7\u9053\u4f20\u8f93\u5404\u79cd\u534f\u8bae\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f IP\u3002\u7531\u4e8e\u5b83\u5c01\u88c5\u4e86 PPP \u5e27\uff0c\u56e0\u6b64\u53ef\u4ee5\u4f20\u8f93 PPP \u652f\u6301\u7684\u4efb\u4f55\u534f\u8bae\uff0c\u4ece\u800c\u5728\u9057\u7559\u7cfb\u7edf\u6216\u7279\u6b8a\u7684\u4f01\u4e1a\u7f51\u7edc\u73af\u5883\u4e2d\u63d0\u4f9b\u66f4\u5927\u7684\u7075\u6d3b\u6027\u3002<\/p>\n        <\/div>\n    <\/div>\n<\/section>","protected":false},"excerpt":{"rendered":"<p>L2TP\uff08\u7b2c2\u5c42\u96a7\u9053\u534f\u8bae\uff09\u662f\u4e00\u79cd\u4f1a\u8bdd\u5c42\u7f51\u7edc\u534f\u8bae\uff0c\u662f\u6784\u5efa\u865a\u62df\u4e13\u7528\u7f51\u7edc\uff08VPN\uff09\u7684\u57fa\u7840\u6a21\u5757\u3002\u6839\u636eRFC 2661\u6b63\u5f0f\u5b9a\u4e49\uff0c\u8be5\u534f\u8bae\u4e3b\u8981\u5728OSI\u6a21\u578b\u7684\u6570\u636e\u94fe\u8def\u5c42\uff08\u7b2c2\u5c42\uff09\u8fd0\u884c\uff0c\u4f46\u5728\u73b0\u4ee3IP\u7f51\u7edc\u4e2d\u901a\u5e38\u901a\u8fc7UDP 1701\u7aef\u53e3\u627f\u8f7d\u3002\u5176\u6280\u672f\u6838\u5fc3\u5728\u4e8e\u80fd\u591f\u5c01\u88c5\u70b9\u5bf9\u70b9\u534f\u8bae\uff08PPP\uff09\u5e27\uff0c\u4f7f\u5176\u80fd\u591f\u901a\u8fc7\u4e0d\u540c\u4e14\u53ef\u80fd\u4e0d\u517c\u5bb9\u7684\u5e95\u5c42\u7f51\u7edc\uff08\u5982IP\u3001\u5e27\u4e2d\u7ee7\u6216ATM\uff09\u8fdb\u884c\u96a7\u9053\u4f20\u8f93\uff0c\u4ece\u800c\u5728LAC\uff08L2TP\u63a5\u5165\u96c6\u4e2d\u5668\uff09\u548cLNS\uff08L2TP\u7f51\u7edc\u670d\u52a1\u5668\uff09\u4e4b\u95f4\u6269\u5c55\u903b\u8f91\u7b2c2\u5c42\u8fde\u63a5\u3002\u901a\u8fc7\u521b\u5efa\u6b64\u865a\u62df\u5316\u96a7\u9053\uff0cL2TP\u4f7f\u8fdc\u7a0b\u5ba2\u6237\u7aef\u65e0\u8bba\u5730\u7406\u4f4d\u7f6e\u5982\u4f55\uff0c\u90fd\u80fd\u5982\u540c\u7269\u7406\u8fde\u63a5\u5230\u672c\u5730\u4f01\u4e1a\u7f51\u7edc\u3002\u8be5\u534f\u8bae\u4f7f\u7528\u63a7\u5236\u901a\u9053\u7ba1\u7406\u96a7\u9053\u7684\u751f\u547d\u5468\u671f\uff08\u5efa\u7acb\u3001\u7ef4\u62a4\u548c\u62c6\u9664\uff09\uff0c\u5e76\u4f7f\u7528\u6570\u636e\u901a\u9053\u5b9e\u9645\u4f20\u8f93\u5c01\u88c5\u7684\u6709\u6548\u8f7d\u8377\u3002\u7136\u800c\uff0c\u4ece\u7eaf\u7cb9\u4e13\u4e1a\u5b89\u5168\u89d2\u5ea6\u6765\u770b\uff0cL2TP\u5728\u6280\u672f\u4e0a\u662f\u900f\u660e\u7684\u2014\u2014\u5b83\u4ec5\u63d0\u4f9b\u4f20\u8f93\u57fa\u7840\u8bbe\u65bd\uff0c\u4f46\u7f3a\u4e4f\u6570\u636e\u52a0\u5bc6\u6216\u6e90\u8eab\u4efd\u9a8c\u8bc1\u7684\u5185\u7f6e\u673a\u5236\u3002\u56e0\u6b64\uff0c\u8be5\u534f\u8bae\u51e0\u4e4e\u59cb\u7ec8\u4e0eIPsec\u7ed3\u5408\u90e8\u7f72\uff0c\u5f62\u6210L2TP\/IPsec\u7ec4\u5408\uff0c\u53d1\u6325L2TP\u7684\u96a7\u9053\u7075\u6d3b\u6027\u548c\u4e92\u8054\u7f51\u534f\u8bae\u5b89\u5168\u6846\u67b6\u7684\u5f3a\u5927\u52a0\u5bc6\u5b89\u5168\u6027\u3002L2TP\u5982\u4f55\u5de5\u4f5c\uff1fL2TP\u901a\u8fc7\u5c01\u88c5\u6570\u636e\u5305\u5e76\u901a\u8fc7\u7528\u6237\u8bbe\u5907\u4e0e\u8fdc\u7a0bVPN\u670d\u52a1\u5668\u4e4b\u95f4\u5efa\u7acb\u7684\u4e13\u7528VPN\u96a7\u9053\u4f20\u8f93\u6765\u5b9e\u73b0\u5b89\u5168\u901a\u4fe1\u30021 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