{"id":20171,"date":"2023-12-24T17:53:25","date_gmt":"2023-12-24T17:53:25","guid":{"rendered":"http:\/\/server.hk\/blog\/20171\/"},"modified":"2024-09-21T12:14:43","modified_gmt":"2024-09-21T12:14:43","slug":"understanding-vpn-technology-building-a-private-and-encrypted-network-channel","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/20171\/","title":{"rendered":"\u4e86\u89e3 VPN \u6280\u8853\uff1a\u69cb\u5efa\u79c1\u5bc6\u53ca\u52a0\u5bc6\u7684\u7db2\u7d61\u901a\u9053"},"content":{"rendered":"<h1 id=\"understanding-vpn-technology-building-a-private-and-encrypted-network-channel-LxpIiNzeNV\">\u4e86\u89e3 VPN \u6280\u8853\uff1a\u69cb\u5efa\u79c1\u5bc6\u53ca\u52a0\u5bc6\u7684\u7db2\u7d61\u901a\u9053<\/h1>\n<p>\u5728\u4eca\u5929\u7684\u6578\u5b57\u5316\u6642\u4ee3\uff0c\u96b1\u79c1\u548c\u5b89\u5168\u81f3\u95dc\u91cd\u8981\uff0c\u865b\u64ec\u79c1\u4eba\u7db2\u7d61\uff08VPN\uff09\u5df2\u6210\u70ba\u500b\u4eba\u548c\u4f01\u696d\u7684\u5fc5\u5099\u5de5\u5177\u3002VPN \u6280\u8853\u5141\u8a31\u7528\u6236\u5728\u516c\u5171\u7db2\u7d61\uff08\u5982\u4e92\u806f\u7db2\uff09\u4e0a\u5efa\u7acb\u5b89\u5168\u800c\u79c1\u5bc6\u7684\u7db2\u7d61\u9023\u63a5\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e VPN \u6280\u8853\u7684\u8907\u96dc\u6027\uff0c\u4e86\u89e3\u5176\u904b\u4f5c\u65b9\u5f0f\u53ca\u6240\u63d0\u4f9b\u7684\u76ca\u8655\u3002<\/p>\n<h2 id=\"what-is-a-vpn-LxpIiNzeNV\">\u4ec0\u9ebc\u662f VPN\uff1f<\/h2>\n<p>\u865b\u64ec\u79c1\u4eba\u7db2\u7d61\uff08VPN\uff09\u662f\u4e00\u7a2e\u6280\u8853\uff0c\u80fd\u5728\u7528\u6236\u8a2d\u5099\u548c\u9060\u7a0b\u4f3a\u670d\u5668\u4e4b\u9593\u5efa\u7acb\u5b89\u5168\u53ca\u52a0\u5bc6\u7684\u9023\u63a5\u3002\u9019\u4e00\u9023\u63a5\u662f\u5728\u516c\u5171\u7db2\u7d61\u4e0a\u5efa\u7acb\u7684\uff0c\u8b93\u7528\u6236\u80fd\u5b89\u5168\u800c\u79c1\u5bc6\u5730\u8a2a\u554f\u8cc7\u6e90\u548c\u700f\u89bd\u7db2\u9801\u3002<\/p>\n<p>\u7576\u7528\u6236\u9023\u63a5\u5230 VPN \u6642\uff0c\u4ed6\u5011\u7684\u4e92\u806f\u7db2\u6d41\u91cf\u6703\u901a\u904e\u52a0\u5bc6\u96a7\u9053\u50b3\u8f38\u81f3 VPN \u4f3a\u670d\u5668\u3002\u9019\u689d\u96a7\u9053\u6703\u52a0\u5bc6\u6578\u64da\uff0c\u8b93\u4efb\u4f55\u53ef\u80fd\u6514\u622a\u7684\u4eba\u7121\u6cd5\u8b80\u53d6\u3002\u7531\u6b64\uff0cVPN \u63d0\u4f9b\u4e86\u9ad8\u6c34\u5e73\u7684\u96b1\u79c1\u548c\u5b89\u5168\uff0c\u4fdd\u8b77\u654f\u611f\u8cc7\u8a0a\u4e0d\u88ab\u7aba\u63a2\u3002<\/p>\n<h2 id=\"how-does-vpn-technology-work-LxpIiNzeNV\">VPN \u6280\u8853\u5982\u4f55\u904b\u4f5c\uff1f<\/h2>\n<p>VPN \u6280\u8853\u5229\u7528\u5404\u7a2e\u5354\u8b70\u548c\u52a0\u5bc6\u7b97\u6cd5\u4f86\u5efa\u7acb\u5b89\u5168\u9023\u63a5\u3002\u6211\u5011\u4f86\u8a73\u7d30\u770b\u4e00\u4e0b\u6d89\u53ca\u7684\u95dc\u9375\u7d44\u4ef6\uff1a<\/p>\n<h3 id=\"1-vpn-client-LxpIiNzeNV\">1. VPN \u5ba2\u6236\u7aef\uff1a<\/h3>\n<p>VPN \u5ba2\u6236\u7aef\u662f\u4e00\u7a2e\u5b89\u88dd\u5728\u7528\u6236\u8a2d\u5099\u4e0a\u7684\u8edf\u9ad4\u61c9\u7528\u7a0b\u5f0f\uff0c\u4f8b\u5982\u96fb\u8166\u3001\u667a\u80fd\u624b\u6a5f\u6216\u5e73\u677f\u96fb\u8166\u3002\u5b83\u4f7f\u7528\u6236\u80fd\u5920\u9023\u63a5\u5230 VPN \u4f3a\u670d\u5668\u4e26\u555f\u52d5\u5b89\u5168\u9023\u63a5\u3002VPN \u5ba2\u6236\u7aef\u53ef\u7528\u65bc\u591a\u7a2e\u64cd\u4f5c\u7cfb\u7d71\uff0c\u5305\u62ec Windows\u3001macOS\u3001iOS \u548c Android\u3002<\/p>\n<h3 id=\"2-vpn-server-LxpIiNzeNV\">2. VPN \u4f3a\u670d\u5668\uff1a<\/h3>\n<p>VPN \u4f3a\u670d\u5668\u662f\u4e00\u500b\u9060\u7a0b\u4f3a\u670d\u5668\uff0c\u5145\u7576\u7528\u6236\u8a2d\u5099\u548c\u4e92\u806f\u7db2\u4e4b\u9593\u7684\u4e2d\u4ecb\u3002\u7576\u7528\u6236\u9023\u63a5\u5230 VPN \u4f3a\u670d\u5668\u6642\uff0c\u4ed6\u5011\u7684\u4e92\u806f\u7db2\u6d41\u91cf\u6703\u901a\u904e\u9019\u500b\u4f3a\u670d\u5668\u50b3\u8f38\uff0c\u8a72\u4f3a\u670d\u5668\u5728\u6578\u64da\u901a\u904e\u5b89\u5168\u96a7\u9053\u6642\u9032\u884c\u52a0\u5bc6\u548c\u89e3\u5bc6\u3002<\/p>\n<h3 id=\"3-protocols-LxpIiNzeNV\">3. \u5354\u8b70\uff1a<\/h3>\n<p>VPN \u4f7f\u7528\u4e0d\u540c\u7684\u5354\u8b70\u4f86\u5efa\u7acb\u548c\u7dad\u6301\u5b89\u5168\u9023\u63a5\u3002\u4e00\u4e9b\u5e38\u7528\u7684\u5354\u8b70\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>OpenVPN\uff1a<\/strong> \u4e00\u7a2e\u4ee5\u958b\u6e90\u805e\u540d\u7684\u5354\u8b70\uff0c\u4ee5\u5176\u5f37\u5927\u7684\u5b89\u5168\u6027\u548c\u9748\u6d3b\u6027\u8457\u7a31\u3002<\/li>\n<li><strong>IPSec\uff1a<\/strong> \u4e00\u7a2e\u5354\u8b70\u5957\u4ef6\uff0c\u63d0\u4f9b\u901a\u904e IP \u7db2\u7d61\u7684\u5b89\u5168\u901a\u4fe1\u3002<\/li>\n<li><strong>L2TP\/IPSec\uff1a<\/strong> \u5c64\u4e8c\u96a7\u9053\u5354\u8b70\uff08L2TP\uff09\u548c IPSec \u7684\u7d44\u5408\u3002<\/li>\n<li><strong>PPTP\uff1a<\/strong> \u4e00\u7a2e\u63d0\u4f9b\u76f8\u5c0d\u5feb\u901f\u9023\u63a5\u901f\u5ea6\u4f46\u88ab\u8a8d\u70ba\u5b89\u5168\u6027\u8f03\u4f4e\u7684\u5354\u8b70\u3002<\/li>\n<\/ul>\n<h3 id=\"4-encryption-LxpIiNzeNV\">4. \u52a0\u5bc6\uff1a<\/h3>\n<p>\u52a0\u5bc6\u5728 VPN \u6280\u8853\u4e2d\u626e\u6f14\u4e86\u95dc\u9375\u89d2\u8272\u3002\u5b83\u78ba\u4fdd\u7528\u6236\u8a2d\u5099\u548c VPN \u4f3a\u670d\u5668\u4e4b\u9593\u50b3\u8f38\u7684\u6578\u64da\u4fdd\u6301\u5b89\u5168\u548c\u79c1\u5bc6\u3002VPN \u4e2d\u5e38\u7528\u7684\u52a0\u5bc6\u7b97\u6cd5\u5305\u62ec AES\uff08\u9ad8\u7d1a\u52a0\u5bc6\u6a19\u6e96\uff09\u548c RSA\uff08Rivest-Shamir-Adleman\uff09\u3002<\/p>\n<h2 id=\"the-benefits-of-vpn-technology-LxpIiNzeNV\">VPN \u6280\u8853\u7684\u76ca\u8655<\/h2>\n<p>\u73fe\u5728\u6211\u5011\u7406\u89e3 VPN \u6280\u8853\u5982\u4f55\u904b\u4f5c\uff0c\u8b93\u6211\u5011\u4f86\u63a2\u8a0e\u5b83\u6240\u63d0\u4f9b\u7684\u597d\u8655\uff1a<\/p>\n<h3 id=\"1-enhanced-security-LxpIiNzeNV\">1. \u589e\u5f37\u7684\u5b89\u5168\u6027\uff1a<\/h3>\n<p>\u901a\u904e\u52a0\u5bc6\u4e92\u806f\u7db2\u6d41\u91cf\uff0cVPN \u63d0\u4f9b\u984d\u5916\u7684\u5b89\u5168\u9632\u8b77\uff0c\u4fdd\u8b77\u654f\u611f\u8cc7\u8a0a\u4e0d\u53d7\u9ed1\u5ba2\u3001\u8eab\u4efd\u76dc\u7aca\u8005\u53ca\u5176\u4ed6\u60e1\u610f\u884c\u70ba\u8005\u7684\u4fb5\u5bb3\u3002\u9019\u5728\u4f7f\u7528\u516c\u5171 Wi-Fi \u7db2\u7d61\u6642\u5c24\u70ba\u91cd\u8981\uff0c\u56e0\u70ba\u9019\u4e9b\u7db2\u7d61\u7d93\u5e38\u5bb9\u6613\u53d7\u5230\u653b\u64ca\u3002<\/p>\n<h3 id=\"2-privacy-protection-LxpIiNzeNV\">2. \u96b1\u79c1\u4fdd\u8b77\uff1a<\/h3>\n<p>VPN \u5e6b\u52a9\u4fdd\u8b77\u7528\u6236\u7684\u96b1\u79c1\uff0c\u901a\u904e\u96b1\u85cf\u4ed6\u5011\u7684 IP \u5730\u5740\u548c\u4f4d\u7f6e\u3002\u9019\u9632\u6b62\u7db2\u7ad9\u3001\u5ee3\u544a\u5546\u548c\u5176\u4ed6\u5be6\u9ad4\u8ffd\u8e2a\u4ed6\u5011\u7684\u5728\u7dda\u6d3b\u52d5\u548c\u6536\u96c6\u500b\u4eba\u8cc7\u8a0a\u3002<\/p>\n<h3 id=\"3-access-to-restricted-content-LxpIiNzeNV\">3. \u8a2a\u554f\u53d7\u9650\u5167\u5bb9\uff1a<\/h3>\n<p>VPN \u5141\u8a31\u7528\u6236\u7e5e\u904e\u5730\u7406\u9650\u5236\uff0c\u8a2a\u554f\u53ef\u80fd\u5728\u5176\u5730\u5340\u88ab\u5c01\u9396\u7684\u5167\u5bb9\u3002\u901a\u904e\u9023\u63a5\u5230\u4f4d\u65bc\u5176\u4ed6\u570b\u5bb6\u7684 VPN \u4f3a\u670d\u5668\uff0c\u7528\u6236\u53ef\u4ee5\u8b93\u81ea\u5df1\u770b\u8d77\u4f86\u4f3c\u4e4e\u662f\u5f9e\u8a72\u5730\u9ede\u700f\u89bd\uff0c\u5f9e\u800c\u7372\u5f97\u5730\u5340\u7279\u5b9a\u5167\u5bb9\u7684\u8a2a\u554f\u6b0a\u9650\u3002<\/p>\n<h3 id=\"4-remote-access-LxpIiNzeNV\">4. \u9060\u7a0b\u8a2a\u554f\uff1a<\/h3>\n<p>VPN \u4f7f\u5f97\u5c0d\u79c1\u5bc6\u7db2\u7d61\u7684\u9060\u7a0b\u8a2a\u554f\u6210\u70ba\u53ef\u80fd\uff0c\u5141\u8a31\u54e1\u5de5\u5f9e\u4e16\u754c\u4efb\u4f55\u5730\u65b9\u5b89\u5168\u5730\u9023\u63a5\u5230\u5176\u516c\u53f8\u7684\u7db2\u7d61\u3002\u9019\u5c0d\u65bc\u9060\u7a0b\u5de5\u4f5c\u8005\u6216\u56e0\u516c\u51fa\u5dee\u7684\u4eba\u5c24\u70ba\u6709\u7528\u3002<\/p>\n<h2 id=\"conclusion-LxpIiNzeNV\">\u7d50\u8ad6<\/h2>\n<p>\u865b\u64ec\u79c1\u4eba\u7db2\u7d61\uff08VPN\uff09\u5fb9\u5e95\u6539\u8b8a\u4e86\u6211\u5011\u9023\u63a5\u4e92\u806f\u7db2\u7684\u65b9\u5f0f\uff0c\u63d0\u4f9b\u4e86\u4e00\u500b\u5b89\u5168\u548c\u79c1\u5bc6\u7684\u7db2\u7d61\u901a\u9053\uff0c\u901a\u904e\u516c\u5171\u7db2\u7d61\u5be6\u73fe\u3002\u901a\u904e\u52a0\u5bc6\u4e92\u806f\u7db2\u6d41\u91cf\u548c\u96b1\u85cf\u7528\u6236\u8eab\u4efd\uff0cVPN \u63d0\u4f9b\u4e86\u589e\u5f37\u7684\u5b89\u5168\u6027\u3001\u96b1\u79c1\u4fdd\u8b77\u548c\u5c0d\u53d7\u9650\u5167\u5bb9\u7684\u8a2a\u554f\u3002\u4e0d\u8ad6\u662f\u500b\u4eba\u4f7f\u7528\u9084\u662f\u5546\u696d\u9700\u6c42\uff0cVPN \u6280\u8853\u5728\u7576\u4eca\u7684\u6578\u5b57\u74b0\u5883\u4e2d\u90fd\u662f\u4e00\u9805\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002<\/p>\n<p>\u8981\u4e86\u89e3\u66f4\u591a\u6709\u95dc VPN 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