{"id":34,"date":"2010-05-21T09:21:09","date_gmt":"2010-05-21T01:21:09","guid":{"rendered":"http:\/\/nick.workao.org\/?p=34"},"modified":"2018-04-19T17:40:33","modified_gmt":"2018-04-19T09:40:33","slug":"%e5%8d%95%e7%bd%91%e5%8d%a1-ubuntu-%e6%9c%8d%e5%8a%a1%e5%99%a8%e6%89%93%e9%80%a0-pptp-server","status":"publish","type":"post","link":"http:\/\/nick.txtcc.com\/index.php\/linux\/34","title":{"rendered":"\u5355\u7f51\u5361 Ubuntu \u670d\u52a1\u5668\u6253\u9020 PPTP\/L2TP VPN Server"},"content":{"rendered":"

\u81ea\u4ece\u5b9e\u9a8c\u5ba4\u653e\u4e86\u53f0 Linux \u670d\u52a1\u5668\u540e\uff0c\u53ef\u73a9\u7684\u4e1c\u897f\u5c31\u8d8a\u6765\u8d8a\u591a\u4e86\u3002\u867d\u7136\u8fd9\u53f0\u670d\u52a1\u5668\u4e3b\u8981\u7684\u5de5\u4f5c\u662f Web Server\uff0c\u4f46\u9274\u4e8e\u6211\u4eec\u90a3\u5c0f\u7ad9\u538b\u529b\u975e\u5e38\u4e4b\u5c0f\uff0c\u670d\u52a1\u5668\u8d44\u6e90\u7edd\u5927\u591a\u6570\u8fd8\u662f\u6d6a\u8d39\u7740\uff0c\u6240\u4ee5\u8ba9\u5b83\u591a\u5e72\u4e9b\u6d3b\u662f\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\u3002\u5b9e\u9a8c\u5ba4\u7684\u5185\u90e8\u7f51\u7edc\u4e2d\u6709\u4e0d\u5c11\u975e\u5e38\u6709\u7528\u7684\u8d44 \u6e90\uff0c\u4f8b\u5982\u79d1\u7814\u7528\u7684\u6587\u732e\u8d44\u6599\uff0c\u4e2a\u4eba\u7684\u5b9e\u9a8c\u6570\u636e\u7b49\u7b49\uff0c\u8fd9\u4e9b\u5185\u5bb9\u4e00\u65e6\u79bb\u5f00\u5b9e\u9a8c\u5ba4\u5c31\u4e0d\u90a3\u4e48\u5bb9\u6613\u8bbf\u95ee\u5230\u4e86\u3002\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u6700\u597d\u7684\u529e\u6cd5\u5c31\u662f VPN\u3002\u5728 Ubuntu \u4e0a\u642d\u5efa VPN \u670d\u52a1\u5668\u7684\u65b9\u6cd5\u975e\u5e38\u591a\uff0c\u6bd4\u8f83\u8457\u540d\u7684\u6709 PPTP, L2TP\/IPSec \u548c OpenVPN\u3002\u8fd9\u4e09\u79cd\u65b9\u5f0f\u4e2d\u540e\u4e24\u8005\u7684\u5b89\u5168\u6027\u6bd4\u8f83\u597d\uff0c\u4f46\u914d\u7f6e\u8f83\u9ebb\u70e6\u3002\u5176\u4e2d OpenVPN \u5728 Windows\/Mac \u5e73\u53f0\u4e0a\u8fd8\u9700\u8981\u989d\u5916\u7684\u5ba2\u6237\u7aef\u3002\u800c L2TP\/IPSec \u65b9\u5f0f\u867d\u7136\u6bd4\u8f83\u597d\uff0c\u4f46\u6211\u914d\u7f6e\u540e\uff0c\u867d\u7136 Windows \u548c Linux \u7528\u6237\u6ca1\u6709\u95ee\u9898\uff0c\u4f46 Mac\/iPhone \u5374\u59cb\u7ec8\u65e0\u6cd5\u8fde\u4e0a\uff0c\u6240\u4ee5\u6682\u65f6\u5220\u6389\u4e86\uff0c\u65e5\u540e\u641e\u6e05\u695a\u662f\u4ec0\u4e48\u95ee\u9898\u518d\u6362\u5230\u8fd9\u79cd\u65b9\u5f0f\u3002<\/p>\n

\u53ea\u5269\u4e0b PPTP \u4e86\u3002\u4e8b\u5b9e\u4e0a PPTP \u662f\u8fd9\u4e09\u8005\u4e2d\u914d\u7f6e\u6700\u5bb9\u6613\u7684\u65b9\u5f0f\uff0c\u800c\u4e14\u7531\u4e8e Windows\/Mac \u7cfb\u7edf\u4e2d\u90fd\u5185\u5efa\u76f8\u5e94\u7684\u5ba2\u6237\u7aef\uff0c\u4f7f\u7528\u8d77\u6765\u975e\u5e38\u65b9\u4fbf\u3002\u4e0b\u9762\u6211\u5c31\u7b80\u5355\u5199\u5199\u6211\u7684\u5b89\u88c5\u8fc7\u7a0b\uff0c\u5e0c\u671b\u5bf9\u9700\u8981\u7684\u670b\u53cb\u6709\u7528\u3002\u5f53\u7136\u5982\u679c\u60a8\u6709\u4ec0\u4e48\u9ad8\u89c1\uff0c\u4e5f\u6b22\u8fce\u60a8\u63d0\u51fa\u3002<\/p>\n

\u9996\u5148\uff0c\u6211\u6240\u6709\u7684\u64cd\u4f5c\u90fd\u662f\u5728\u4e4b\u524d\u6587 \u7ae0\u4e2d\u4ecb\u7ecd\u7684 Ubuntu 8.04 Server \u7cfb\u7edf\u4e2d\u64cd\u4f5c\u7684\uff0c\u5982\u679c\u60a8\u7684\u7cfb\u7edf\u548c\u6211\u7684\u4e0d\u4e00\u6837\uff0c\u8bf7\u53c2\u8003\u4e4b\u524d\u7684\u4e24 \u7bc7\u6587\u7ae0<\/a>\u3002\u6211\u7684\u670d\u52a1\u5668\u73af\u5883\u662f\u5355\u7f51\u5361 eth0\u3002<\/p>\n

\u5728 Ubuntu \u4e2d\u5efa\u7acb pptp server \u9700\u8981\u7684\u8f6f\u4ef6\u5305\u4e3a pptpd\uff0c\u7528 apt-get \u5373\u53ef\u5b89\u88c5\uff1a<\/p>\n

\n
sudo apt-get install<\/abbr> pptpd<\/pre>\n<\/blockquote>\n
\u7cfb\u7edf\u4f1a\u81ea\u52a8\u89e3\u51b3\u4f9d\u8d56\u5173\u7cfb\uff0c\u5b89\u88c5\u597d\u540e\uff0c\u9700\u8981\u8fdb\u884c\u4e00\u756a\u8bbe\u7f6e\u3002\u9996\u5148\u7f16\u8f91 \/etc\/pptpd.conf<\/p>\n
\n
sudo nano \/etc\/pptpd.conf<\/pre>\n<\/blockquote>\n
\u53bb\u6389\u6587\u4ef6\u6700\u672b\u7aef\u7684 localip \u548c remoteip \u4e24\u4e2a\u53c2\u6570\u7684\u6ce8\u91ca\uff0c\u5e76\u8fdb\u884c\u76f8\u5e94\u4fee\u6539\u3002\u8fd9\u91cc\uff0clocalip \u662f VPN \u8fde\u901a\u540e\u670d\u52a1\u5668\u7684 ip \u5730\u5740\uff0c\u800c remoteip \u5219\u662f\u5ba2\u6237\u7aef\u7684\u53ef\u5206\u914d ip \u5730\u5740\u3002\u4e0b\u9762\u662f\u6211\u7684\u914d\u7f6e\uff1a<\/p>\n
\n
localip 10.100.0.1\nremoteip 10.100.0.2-10<\/pre>\n<\/blockquote>\n
\u7f16\u8f91\u597d\u8fd9\u4e2a\u6587\u4ef6\u540e\uff0c\u6211\u4eec\u9700\u8981\u7f16\u8f91 \/etc\/ppp\/pptpd-options \u6587\u4ef6\uff0c\u8fd8\u662f\u7528 nano \u7f16\u8f91\uff0c\u547d\u4ee4\u8fd9\u91cc\u5c31\u4e0d\u5199\u4e86\u3002\u8fd9\u91cc\u7edd\u5927\u591a\u6570\u53c2\u6570\u53ea\u9700\u7ef4\u6301\u539f\u6765\u7684\u9ed8\u8ba4\u503c\u5373\u53ef\uff0c\u6211\u4eec\u53ea\u9700\u8981\u6539\u53d8\u5176\u4e2d\u7684 ms-dns \u9009\u9879\uff0c\u4e3a VPN \u5ba2\u6237\u7aef\u6307\u6d3e DNS \u670d\u52a1\u5668\u5730\u5740\uff1a<\/p>\n
\n
ms-dns 202.113.16.10\nms-dns 208.67.222.222<\/pre>\n<\/blockquote>\n
\u4fee\u6539 \/etc\/ppp\/chap-secrets \u6587\u4ef6\uff0c\u8fd9\u91cc\u9762\u5b58\u653e\u7740 VPN \u7684\u7528\u6237\u540d\u548c\u5bc6\u7801\uff0c\u6839\u636e\u4f60\u7684\u5b9e\u9645\u60c5\u51b5\u586b\u5199\u5373\u53ef\u3002\u5982\u6587\u4ef6\u4e2d\u6ce8\u91ca\u6240\u793a\uff0c\u7b2c\u4e00\u5217\u662f\u7528\u6237\u540d\uff0c\u7b2c\u4e8c\u5217\u662f\u670d\u52a1\u5668\u540d\uff08\u9ed8\u8ba4\u5199 pptpd \u5373\u53ef\uff0c\u5982\u679c\u5728 pptpd-options \u6587\u4ef6\u4e2d\u66f4\u6539\u8fc7\u7684\u8bdd\uff0c\u6ce8\u610f\u8fd9\u91cc\u4fdd\u6301\u4e00\u81f4\uff09\uff0c\u7b2c\u4e09\u5217\u662f\u5bc6\u7801\uff0c\u7b2c\u56db\u5217\u662f IP \u9650\u5236\uff08\u4e0d\u505a\u9650\u5236\u5199 * \u5373\u53ef\uff09\u3002\u8fd9\u91cc\u6211<\/a>\u5c31\u4e0d\u8d34\u6211\u7684\u914d\u7f6e\u4e86<\/p>\n
\u5168\u90e8\u641e\u5b9a\u540e\uff0c\u6211\u4eec\u9700\u8981\u91cd\u542f pptpd \u670d\u52a1\u4f7f\u65b0\u914d\u7f6e\u751f\u6548\uff1a<\/p>\n
\n
sudo \/etc\/init.d\/pptpd restart<\/pre>\n<\/blockquote>\n
\u627e\u4e00\u53f0 Windows \u7535\u8111\uff0c\u65b0\u5efa\u4e2a VPN \u94fe\u63a5\uff0c\u5730\u5740\u586b\u670d\u52a1\u5668\u7684 IP\uff08\u6216\u57df\u540d\uff09\uff0c\u7528\u6237\u540d\u5bc6\u7801\u586b\u521a\u624d\u8bbe\u7f6e\u597d\u7684\uff0c\u57df\u90a3\u9879\u7a7a\u7740\uff08\u5982\u679c\u4f60\u5728 pptpd-options \u4e2d\u8bbe\u7f6e\u4e86\uff0c\u8fd9\u91cc\u5c31\u4fdd\u6301\u4e00\u81f4\uff09\uff0c\u70b9\u8fde\u63a5\u5c31\u53ef\u4ee5\u4e86\u3002\u6b63\u5e38\u60c5\u51b5\u4e0b\u60a8\u5e94\u8be5\u80fd\u591f\u5efa\u7acb\u4e0e\u670d\u52a1\u5668\u7684 VPN \u94fe\u63a5\u4e86\u3002<\/p>\n
\u5efa\u7acb\u8fde\u63a5\u4e4b\u540e\uff0c\u60a8\u4f1a\u53d1\u73b0\u9664\u4e86\u53ef\u4ee5\u8bbf\u95ee\u670d\u52a1\u5668\u7684\u8d44\u6e90\uff0c\u5176\u4f59\u5185\u5916\u548c\u4e92\u8054\u7f51\u7684\u5185\u5bb9\u5747\u65e0\u6cd5\u8bbf\u95ee\u3002\u5982\u679c\u9700\u8981\u8bbf\u95ee\u8fd9\u4e9b\u5185\u5bb9\u7684\u8bdd\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u8fdb\u4e00\u6b65\u8bbe\u7f6e\uff1a<\/p>\n
\u9996\u5148\uff0c\u5f00\u542f ipv4 forward\u3002\u65b9\u6cd5\u662f\uff0c\u4fee\u6539 \/etc\/sysctl.conf\uff0c\u627e\u5230\u7c7b\u4f3c\u4e0b\u9762\u7684\u884c\u5e76\u53d6\u6d88\u5b83\u4eec\u7684\u6ce8\u91ca\uff1a<\/p>\n
\n
net.ipv4.ip_forward=1<\/pre>\n<\/blockquote>\n
\u7136\u540e\u4f7f\u65b0\u914d\u7f6e\u751f\u6548\uff1a<\/p>\n
\n
sudo sysctl -p<\/pre>\n<\/blockquote>\n
\u6709\u4e9b\u65f6\u5019\uff0c\u7ecf\u8fc7\u8fd9\u6837\u8bbe\u7f6e\uff0c\u5ba2\u6237\u7aef\u673a\u5668\u5c31\u53ef\u4ee5\u4e0a\u7f51\u4e86\uff08\u6211\u5728\u865a\u62df\u673a\u4e0a\u8fd9\u6837\u64cd\u4f5c\u540e\u5c31\u53ef\u4ee5\u4e86\uff09\u3002\u4f46\u6211\u5728\u5b9e\u9a8c\u5ba4\u7684\u670d\u52a1\u5668\u4e0a\u8fd9\u6837\u64cd\u4f5c\u540e\u4ecd\u7136\u65e0\u6cd5\u8bbf\u95ee\u7f51\u7edc\uff0c\u8fd9\u6837\u6211 \u4eec\u5c31\u9700\u8981\u5efa\u7acb\u4e00\u4e2a NAT\u3002\u8fd9\u91cc\u6211\u4eec\u4f7f\u7528\u5f3a\u5927\u7684 iptables \u6765\u5efa\u7acb NAT\u3002\u9996\u5148\uff0c\u5148\u5b89\u88c5 iptables\uff1a<\/p>\n
\n
sudo apt-get intall iptables<\/pre>\n<\/blockquote>\n
\u88c5\u597d\u540e\uff0c\u6211\u4eec\u5411 nat \u8868\u4e2d\u52a0\u5165\u4e00\u6761\u89c4\u5219\uff1a<\/p>\n
\n
sudo iptables -t nat -A POSTROUTING -s 10.100.0.0\/24 -o eth0 -j MASQUERADE<\/pre>\n<\/blockquote>\n
\u8fd9\u6837\u64cd\u4f5c\u540e\uff0c\u5ba2\u6237\u7aef\u673a\u5668\u5e94\u8be5\u5c31\u53ef\u4ee5\u4e0a\u7f51\u4e86\u3002<\/p>\n
\u4f46\u662f\uff0c\u53ea\u662f\u8fd9\u6837\uff0ciptables \u7684\u89c4\u5219\u4f1a\u5728\u4e0b\u6b21\u91cd\u542f\u65f6\u88ab\u6e05\u9664\uff0c\u6240\u4ee5\u6211\u4eec<\/a>\u8fd8 \u9700\u8981\u628a\u5b83\u4fdd\u5b58\u4e0b\u6765\uff0c\u65b9\u6cd5\u662f\u4f7f\u7528 iptables-save \u547d\u4ee4\uff1a<\/p>\n
\n
sudo iptables-save > \/etc\/iptables-rules<\/pre>\n<\/blockquote>\n
\u7136\u540e\u4fee\u6539 \/etc\/network\/interfaces \u6587\u4ef6\uff0c\u627e\u5230 eth0 \u90a3\u4e00\u8282\uff0c\u5728\u5bf9 eth0 \u7684\u8bbe\u7f6e\u6700\u672b\u5c3e\u52a0\u4e0a\u4e0b\u9762\u8fd9\u53e5\uff1a<\/p>\n
\n
pre-up iptables-restore < \/etc\/iptables-rules<\/pre>\n<\/blockquote>\n
\u8fd9\u6837\u5f53\u7f51\u5361 eth0 \u88ab\u52a0\u8f7d\u7684\u65f6\u5019\u5c31\u4f1a\u81ea\u52a8\u8f7d\u5165\u6211\u4eec\u9884\u5148\u7528 iptables-save \u4fdd\u5b58\u4e0b\u7684\u914d\u7f6e\u3002<\/p>\n
\u5230\u6b64\uff0c\u4e00\u4e2a VPN Server\/Gateway \u57fa\u672c\u5c31\u7b97\u67b6\u8bbe\u5b8c\u6bd5\u3002\u5f53\u7136\uff0c\u4e5f\u8bb8\u4f60\u6309\u7167\u6211\u7684\u65b9\u6cd5\u505a\u4e86\uff0c\u8fd8\u662f\u65e0\u6cd5\u6210\u529f\uff0c\u90a3\u4e48\u4e0b\u9762\u603b\u7ed3\u4e00\u4e9b\u6211\u78b0\u5230\u7684\u95ee\u9898\u548c\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n
\u65e0\u6cd5\u5efa\u7acb VPN \u8fde\u63a5<\/h3>\n
\u5b89\u88c5\u597d pptpd \u5e76\u8bbe\u7f6e\u540e\uff0c\u5ba2\u6237\u7aef\u8fd8\u662f\u65e0\u6cd5\u5efa\u7acb\u5230\u670d\u52a1\u5668\u7684\u8fde\u63a5\u3002\u9020\u6210\u7684\u539f\u56e0\u53ef\u80fd\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1a<\/p>\n
\n
    \n    
  1. \u670d\u52a1\u5668\u7aef\u7684\u9632\u706b\u5899\u8bbe\u7f6e\uff1aPPTP \u670d\u52a1\u9700\u8981\u4f7f\u7528 1723(tcp) \u7aef\u53e3\u548c gre \u534f\u8bae\uff0c\u56e0\u6b64\u8bf7\u786e\u4fdd\u60a8\u7684\u9632\u706b\u5899\u8bbe\u7f6e\u5141\u8bb8\u8fd9\u4e24\u8005\u901a\u884c\u3002<\/li>\n    
  2. \u5982\u679c\u670d\u52a1\u5668\u5728\u8def\u7531\u5668\u540e\u9762\uff0c\u8bf7\u786e\u4fdd\u8def\u7531\u5668\u4e0a\u505a\u597d\u76f8\u5e94\u7684\u8bbe\u7f6e\u548c\u7aef\u53e3\u8f6c\u53d1\u3002<\/li>\n    
  3. \u5982\u679c\u670d\u52a1\u5668\u5728\u8def\u7531\u5668\u540e\u9762\uff0c\u90a3\u4e48\u8bf7\u786e\u4fdd\u4f60\u7684\u670d\u52a1\u5668\u652f\u6301 VPN Passthrough\u3002<\/li>\n    
  4. \u5982\u679c\u5ba2\u6237\u7aef\u5728\u8def\u7531\u5668\u540e\u9762\uff0c\u90a3\u4e48\u5ba2\u6237\u7aef\u6240\u4f7f\u7528\u7684\u8def\u7531\u5668\u4e5f\u5fc5\u987b\u652f\u6301 VPN Passthrough\u3002\u5176\u5b9e\u5e02\u9762\u4e0a\u7a0d\u5fae\u597d\u70b9\u7684\u8def\u7531\u5668\u90fd\u662f\u652f\u6301 VPN Passthrough \u7684\uff0c\u5f53\u7136\u4e5f\u4e0d\u6392\u9664\u90a3\u4e9b\u6700\u6700\u6700\u4fbf\u5b9c\u7684\u4fbf\u5b9c\u8d27\u786e\u5b9e\u4e0d\u652f\u6301\u3002\u5f53\u7136\uff0c\u5982\u679c\u4f60\u7684\u8def\u7531\u5668\u53ef\u4ee5\u5237 DD-Wrt \u7684\u8bdd\u5c31\u5237\u4e0a\u5427\uff0cDD-Wrt \u662f\u652f\u6301\u7684\u3002<\/li>\n<\/ol>\n<\/blockquote>\n
    \n
    \u80fd\u5efa\u7acb\u94fe\u63a5\uff0c\u4f46\u201c\u51e0\u4e4e\u201d\u65e0\u6cd5\u8bbf\u95ee\u4e92\u8054\u7f51<\/h3>\n<\/blockquote>\n
    \u8fd9\u91cc\u6211\u4f7f\u7528\u201c\u51e0\u4e4e\u201d\u8fd9\u4e2a\u8bcd\uff0c\u662f\u56e0\u4e3a\u5e76\u4e0d\u662f\u5b8c\u5168\u4e0d\u80fd\u8bbf\u95ee\u4e92\u8054\u7f51\u3002 \u75c7\u72b6\u4e3a\uff0c\u6253\u5f00 Google \u641c\u7d22\u6ca1\u95ee\u9898\uff0c\u4f46\u5176\u5b83\u7f51\u7ad9\u5747\u65e0\u6cd5\u6253\u5f00\uff1bSSH \u53ef\u7528\uff0c\u4f46 scp \u4e0d\u884c\uff1bftp \u80fd\u63e1\u624b\uff0c\u4f46\u4f20\u4e0d\u4e86\u6587\u4ef6\u3002\u6211\u5c31\u9047\u5230\u4e86\u8fd9\u79cd\u60c5\u51b5\uff0c\u4ed4\u7ec6 Google \u540e\u53d1\u73b0\u539f\u6765\u662f MTU \u7684\u95ee\u9898\uff0c\u7528 ping \u63a2\u6d4b\u4e86\u4e00\u4e0b\u679c\u7136\u662f\u5305\u8fc7\u5927\u4e86\u3002\u77e5\u9053\u95ee\u9898\u5c31\u597d\u529e\u4e86\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7 iptables \u6765\u4fee\u6b63\u8fd9\u4e00\u95ee\u9898\u3002\u5177\u4f53\u539f\u7406\u5c31\u4e0d\u8bb2\u4e86\uff0c\u9700\u8981\u7684\u81ea\u5df1 Google\u3002\u8fd9\u91cc\u53ea\u8bf4\u89e3\u51b3\u65b9\u6848\uff0c\u5728 filter \u8868\u4e2d\u6dfb\u52a0\u4e0b\u9762\u7684\u89c4\u5219\uff1a<\/a><\/blockquote>\n
    \n
    sudo iptables -A FORWARD -s 10.100.0.0\/24 -p tcp -m tcp --tcp-flags SYN,RST SYN\n-j TCPMSS --set-mss 1200<\/pre>\n<\/blockquote>\n
    \u4e0a\u9762\u89c4\u5219\u4e2d\u7684 1200 \u53ef\u4ee5\u6839\u636e\u4f60\u7684\u5b9e\u9645\u60c5\u51b5\u4fee\u6539\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u6700\u597d\u7684\u7f51\u7edc\u6027\u80fd\uff0c\u8fd9\u4e2a\u503c\u5e94\u8be5\u4e0d\u65ad\u4fee\u6539\uff0c\u76f4\u81f3\u80fd\u4fdd\u8bc1\u7f51\u7edc\u6b63\u5e38\u4f7f\u7528\u60c5\u51b5\u4e0b\u7684\u6700\u5927\u503c\u3002<\/blockquote>\n
    \u597d\u4e86\uff0c\u81f3\u6b64\uff0c\u4e00\u53f0\u5355\u7f51\u5361 pptp-server \u5c31\u7b97\u5b8c\u6210\u4e86\u3002<\/p>\n
    pptp\u4e0a\u7f51\u89e3\u51b3\u65b9\u6cd5<\/h1>\n
    <\/div>\n
    \n
    \n
    \u4ee3\u7406\u670d\u52a1\u5668\u66f4\u6362centos6\u534a\u6708\u6709\u4f59\uff0c\u66f4\u6362\u540e\u53d1\u73b0wint\u7cfb\u7edf\u62e8\u53f7\u540e\u8bbf\u95ee sina.com.cn \/ iciba.com \/ 360.com \/ abot.cn \u7b49\u90e8\u5206\u7f51\u7ad9\u65f6\u9875\u9762\u6253\u4e0d\u5f00\uff0c\u800c\u5728\u670d\u52a1\u5668\u4e0a\u6216\u548c\u673a\u623f\u5185\u76f4\u63a5\u7528\u901a\u8fc7\u670d\u52a1\u5668\u505a\u7f51\u5173\u7684\u5176\u5b83\u673a\u5668\u90fd\u80fd\u6b63\u5e38\u8bbf\u95ee\uff0c\u4e00\u76f4\u4e0d\u5230\u5176\u89e3\u3002<\/div>\n
    \u4eca\u665a\u641c\u7d22\u4e86\u4e00\u4e0b\uff0c\u627e\u5230\u4e9b\u8d44\u6599\uff0c\u53d1\u73b0\u662fPPTPD\u9ed8\u8ba4\u7684MTU\u592a\u5927\uff0c\u5bfc\u81f4\u94fe\u8def\u4e0a\u6709\u4e9b\u8bbe\u5907\u5835\u585e\u3002<\/div>\n
    \u89e3\u51b3\u601d\u8def\u5c31\u662f\u628aMTU\u6539\u5c0f\u4e9b\uff0c\u65b9\u6cd5\u5927\u6982\u6709\u4e09\u79cd\uff1a<\/div>\n
    \u4e00\u3001\u5982\u679c\u5f00\u542f\u4e86iptables\u7684\uff08\u9a8c\u8bc1\u8fc7\u53ef\u884c\uff09<\/div>\n
    iptables -A FORWARD -p tcp --syn -s\u00a010.0.0.0\/24\u00a0-j TCPMSS --set-mss 1356<\/div>\n
    \u5176\u4e2d\u7c97\u4f53\u90e8\u5206\u6362\u4e0a\u4f60\u7684pptp client\u7684IP\u6bb5<\/div>\n
    \u4e8c \u3001\u5728 \/etc\/ppp\/ip-up \u4e2d\uff0cexit 0\u884c\u524d\u6dfb\u52a0 (\u9a8c\u8bc1\u8fc7\u53ef\u884c)<\/div>\n
    ifconfig $1 mtu 1356<\/div>\n
    \u770b\u5230ip-up\u4e2d\u6709\u4e00\u884c\uff1a<\/div>\n
    [ -x \/etc\/ppp\/ip-up.local ] && \/etc\/ppp\/ip-up.local \"$@\"<\/div>\n
    \u6240\u4ee5\u4e5f\u5728 ip-up.local\u6587\u4ef6\u4e2d\u6dfb\u52a0ifconfig $1 mtu 1356\u4e5f\u540c\u6548\u3002<\/div>\n
    \u4e09\u3001\u5728PPTPD\u914d\u7f6e\u6587\u4ef6\u4e2d\u8bbe\u7f6e\uff1a<\/div>\n
    \u6253\u5f00\/etc\/ppp\/options.pptpd<\/div>\n
    \u5728\u6587\u4ef6\u6700\u540e\u6dfb\u52a0 mtu1356<\/div>\n
    \u00a0\u7ee7\u7eed\u524d\u7bc7\u535a\u6587\u7684\u5185\u5bb9\u7ee7\u7eed\u8c08\u8c08mtu\u5bfc\u81f4\u8bbf\u95ee\u975e\u5e38\u6162\u7684\u95ee\u9898\u6216\u8005\u76f4\u63a5\u8bbf\u95ee\u4e0d\u4e86\u3002\u6211\u4eec\u7684\u670d\u52a1\u5668\u662faliyun\u7684\u65b0\u52a0\u5761\u670d\u52a1\u5668\uff0cpptp\u8fde\u63a5\u6210\u529f\u540e\uff0c\u8bbf\u95ee\u5899\u5916\u7684\u5927\u591a\u6570\u7f51\u7ad9\u57fa\u672c\u6beb\u65e0\u538b\u529b\uff0c\u4f46\u662f\u653e\u4e0d\u4e86\u767e\u5ea6\uff0c\u597d\u5947\u602a\uff0c\u90fd\u80fd\u8bbf\u95ee\u5230\u88ab\u5899\u7684\u8c37\u6b4c\u4e86\uff0c\u767e\u5ea6\u96be\u9053\u4e5f\u88ab\u65b0\u52a0\u5761\u7684\u5899\u6863\u4e0a\u4e86\u5417\uff1f<\/div>\n
    \u00a0\u00a0\u00a0\u00a0\u7ecf\u8fc7\u4e00\u756a\u767e\u5ea6+\u8c37\u6b4c\u540e\uff0c\u53d1\u73b0\u679c\u771f\u6709\u5f88\u591a\u4eba\u6709\u8fd9\u6837\u7684\u60c5\u51b5\u3002\u5728linux\u7cfb\u7edf\u4e0b\u9762\u7684ppp0\u7684\u7f51\u5361\u63a5\u53e3\u7684mtu\u662f1396\uff0c\u800c\u6211\u4eecwindows \u5ba2\u6237\u7aef\u7684\u9ed8\u8ba4mtu\u662f1496\u3002\u672c\u6765\u5728mtu\u5728\u8def\u7531\u901a\u4fe1\u7684\u65f6\u5019\u4f1a\u81ea\u534f\u5546\uff0c\u53ef\u662f\u6709\u4e9b\u8fd0\u8425\u5546\u6216\u8005\u4e3b\u673a\u7ba1\u7406\u7740\u4e3a\u4e86\u9632\u6b62DDOS\uff0c\u7981\u7528\u4e86ping\u7684\u529f\u80fd(\u4e0d\u77e5\u9053\u80fd\u8d77\u5230\u9632ddos\u7684\u4f5c\u7528)\uff0cmtu\u81ea\u534f\u5546\u6b63\u597d\u5229\u7528ICMP\u534f\u8bae\u6765\u901a\u4fe1\u7684\uff0c\u5bfc\u81f4\u4e0d\u80fd\u534f\u5546mtu\uff0c\u53d1\u9001\u5230pptp\u670d\u52a1\u5668\u7684\u6570\u636e\u5305\uff0c\u5c31\u4f1a\u6709\u95ee\u9898\uff0c\u81ea\u7136\u6709\u4e9b\u7f51\u7ad9\u5c31\u8bbf\u95ee\u4e0d\u4e86\uff0c\u6709\u4e9b\u7f51\u7ad9\u8d85\u65f6\u7684\u60c5\u51b5\u3002<\/div>\n
    \u00a0\u00a0\u00a0\u00a0\u4e0b\u9762\u6765\u770b\u770b\u89e3\u51b3ppp0\u63a5\u53e3mtu\u7684\u51e0\u79cd\u65b9\u5f0f\u3002<\/div>\n
      \n    
    1. \u5728PPTP\u7684\u670d\u52a1\u7aef\/etc\/ppp\/options.pptpd \u4e2d\u914d\u7f6e\u4e0amtu 1496.<\/li>\n    
    2. \u7ed9ppp0\u7684\u63a5\u53e3\u76f4\u63a5\u4fee\u6539mtu\u503c,\u7136\u540e\u91cd\u542fpptp\u670d\u52a1\u5373\u53ef\u751f\u6548\u3002<\/li>\n<\/ol>\n
      ifconfig ppp0 mtu 1496 \/etc\/init.d\/pptpd restart<\/div>\n
      \u4fee\u6539iptables\u5b9e\u73b0<\/div>\n
      iptables -A FORWARD -p tcp -syn -s 192.168.100.0\/24 -j TCPMSS -set-mss 1496<\/div>\n
      \u6700\u540e\u91cd\u65b0\u8fde\u63a5\uff0c\u5c31\u80fd\u8bbf\u95ee\u4e00\u4e9b\u56e0\u4e3amtu\u4e0d\u7edf\u4e00\u7684\u95ee\u9898\uff0c\u8bbf\u95ee\u4e0d\u4e86\u7684\u7f51\u7ad9\u4e86\u3002<\/div>\n<\/div>\n
      <\/div>\n<\/div>\n
       <\/p>\n
      Ubuntu server 12 \u4e0a\u642d\u5efa L2TP\/IPSec VPN<\/h1>\n
      \u4e00\u3001\u7b80\u5355\u7684\u539f\u7406\u4ecb\u7ecd<\/h1>\n
      \n\n\u901a\u8fc7\u4e0a\u6b21\u548c Paveo \u5927\u53d4\u804a\u5929\uff0c\u8fd8\u6709\u5e73\u65f6\u4e00\u4e9b\u80a4\u6d45\u7684\u4e86\u89e3\uff0c\u6211\u4eec\u77e5\u9053\uff0c\u6240\u8c13 L2TP\/IPSec \u5c31\u662f L2TP over IPSec\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u8fd9\u79cd VPN \u65b9\u5f0f\u5206\u4e24\u4e2a\u90e8\u5206\uff0cIPSec \u548c L2TP\u3002\u6211\u4eec\u8981\u5148\u505a\u597d IPSec \u7684\u90e8\u5206\u3002\n\n\u5728\u8fd9\u4e2a\u5e94\u7528\u573a\u666f\u4e0b\uff0c\u6211\u7684\u7406\u89e3\uff0cIPSec \u4f7f\u7528\u9884\u5171\u4eab\u5bc6\u94a5\uff08PSK\uff09\u8fdb\u884c\u52a0\u5bc6\u548c\u9a8c\u8bc1\uff0cL2TP \u8d1f\u8d23\u5c01\u5305\uff0cPPP \u8d1f\u8d23\u5177\u4f53\u7684\u7528\u6237\u9a8c\u8bc1\u3002\n
      \u4e8c\u3001IPSEC \u90e8\u5206<\/h3>\n\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4f7f\u7528 Openswan \u6765\u5b9e\u73b0 IPSec\u3002\n\nsudo apt<\/span>\n-<\/span>\nget<\/span>\n install openswan<\/span>\n
      \u00a0\u7f16\u8f91 IPSec \u914d\u7f6e\u6587\u4ef6<\/h4>\n\u8bf7\u4f7f\u7528\u60a8\u559c\u6b22\u7684\u7f16\u8f91\u5668\u6253\u5f00\u00a0\/etc\/ipsec.conf<\/code>\u00a0\u6587\u4ef6\u3002\n\nsudo nano <\/span>\n\/<\/span>\netc<\/span>\n\/<\/span>\nipsec<\/span>\n.<\/span>\nconf<\/span>\n\n\u627e\u5230\u00a0protostack<\/code>\u00a0\u4e00\u884c\uff0c\u5c06\u5176\u503c\u6539\u4e3a\u00a0netkey<\/code>\u3002\u5e94\u8be5\u662f\u8fd9\u4e2a\u6837\u5b50\u7684\uff1a\n\nprotostack<\/span>\n=<\/span>\nnetkey<\/span>\n\n\u597d\u7684\uff0c\u73b0\u5728\u8bf7\u5c06\u5149\u6807\u79fb\u52a8\u5230\u6587\u4ef6\u672b\u5c3e\uff08\u672b\u5c3e\u5e94\u8be5\u662f\u4e00\u4e9b\u6ce8\u91ca\u8bf4\u660e\uff0c\u5728\u5b83\u7684\u4e0b\u9762\uff09\uff0c\u590d\u5236\u5982\u4e0b\u4e00\u6bb5\u5185\u5bb9\uff0c\n
      conn <\/span>\n%<\/span>\ndefault<\/span>\n\n        forceencaps<\/span>\n=<\/span>\nyes\n\nconn L2TP<\/span>\n-<\/span>\nPSK<\/span>\n-<\/span>\nNAT\n        rightsubnet<\/span>\n=<\/span>\nvhost<\/span>\n:%<\/span>\nno<\/span>\n,%<\/span>\npriv\n        also<\/span>\n=<\/span>\nL2TP<\/span>\n-<\/span>\nPSK<\/span>\n-<\/span>\nnoNAT\n\nconn L2TP<\/span>\n-<\/span>\nPSK<\/span>\n-<\/span>\nnoNAT\n        authby<\/span>\n=<\/span>\nsecret\n        pfs<\/span>\n=<\/span>\nno<\/span>\n        auto<\/span>\n=<\/span>\nadd\n        keyingtries<\/span>\n=<\/span>\n3<\/span>\n\n        rekey<\/span>\n=<\/span>\nno<\/span>\n\n        ikelifetime<\/span>\n=<\/span>\n8h<\/span>\n\n        keylife<\/span>\n=<\/span>\n1h<\/span>\n\n        type<\/span>\n=<\/span>\ntransport\n        left<\/span>\n=\u60a8\u670d\u52a1\u5668\u7684\u516c\u7f51<\/span>\nIPv4<\/span>\n\u5730\u5740<\/span>\n\n        leftprotoport<\/span>\n=<\/span>\n17<\/span>\n\/<\/span>\n1701<\/span>\n\n        right<\/span>\n=%<\/span>\nany\n        rightprotoport<\/span>\n=<\/span>\n17<\/span>\n\/%<\/span>\nany<\/span><\/pre>\n\u00a0<\/span>\n\n\u55ef\uff0cIPSec \u90e8\u5206\u5c31\u5feb\u5b8c\u6210\u4e86\u3002\u4e0b\u9762\u6211\u4eec\u6765\u8bbe\u7f6e PSK \u9884\u5171\u4eab\u5bc6\u94a5\uff0c\u7528\u7f16\u8f91\u5668\u6253\u5f00\uff08\u6ca1\u6709\u5c31\u521b\u5efa\uff09\u00a0\/etc\/ipsec.secrets<\/code>\u00a0\u6587\u4ef6\u3002\n\nsudo nano <\/span>\n\/<\/span>\netc<\/span>\n\/<\/span>\nipsec<\/span>\n.<\/span>\nsecrets<\/span>\n\n\u8f93\u5165\u4e0b\u9762\u4e00\u884c\u5185\u5bb9\n
      \u60a8\u670d\u52a1\u5668\u7684\u516c\u7f51IPv4\u5730\u5740 %any: PSK \"\u60a8\u7684\u9884\u5171\u4eab\u5bc6\u94a5\"<\/pre>\n\u4e0b\u9762\u6211\u4eec\u9700\u8981\u5bf9\u7cfb\u7edf\u7684\u7f51\u7edc\u7b56\u7565\u8fdb\u884c\u4e00\u4e9b\u8c03\u6574\uff0c\u8bf7\u8fd0\u884c\uff08\u4e00\u884c\u4e00\u884c\u5730\u8f93\u5165\uff0c\u8f93\u5165\u5b8c\u6309\u56de\u8f66\uff0c\u8bf7\u5ffd\u7565\u884c\u9996\u7684\u7a7a\u683c\uff09\uff1a\n\nfor<\/span>\n each <\/span>\nin<\/span> \/<\/span>\nproc<\/span>\n\/<\/span>\nsys<\/span>\n\/<\/span>\nnet<\/span>\n\/<\/span>\nipv4<\/span>\n\/<\/span>\nconf<\/span>\n\/* do echo 0 > $each\/accept_redirects echo 0 > $each\/send_redirects done<\/span>\n\n\u540c\u65f6\uff0c\u5c06\u4e0a\u9762\u8fd9\u6bb5\u4ee3\u7801\u5b8c\u6574\u5730\u590d\u5236\u4e00\u6b21\uff0c\u52a0\u5165\u5230\u00a0\/etc\/rc.local<\/code>\u00a0\u4e2d\uff0c\u4f7f\u5176\u5728\u6bcf\u6b21\u7cfb\u7edf\u542f\u52a8\u65f6\u90fd\u751f\u6548\u3002\u5177\u4f53\u65b9\u6cd5\u662f\uff0c\u8fd0\u884c\u00a0vi \/etc\/rc.local<\/code>\uff0c\u5c06\u5149\u6807\u79fb\u52a8\u5230\u00a0exit 0<\/code>\u00a0\u4e4b\u524d\u7684\u884c\uff0c\u590d\u5236\u4ee3\u7801\u3002\n\n\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u6765\u91cd\u542f\u4e00\u6b21 IPSec \u670d\u52a1\uff0c\n\nservice ipsec restart<\/span>\n\n\u6d4b\u8bd5\u6211\u4eec\u7684 IPSec \u90e8\u5206\u914d\u7f6e\u662f\u5426\u6210\u529f\n\nipsec verify<\/span>\n\n\u5982\u679c\u5728\u7ed3\u679c\u4e2d\u770b\u5230\u300cOpportunistic Encryption Support\u300d\u88ab\u7981\u7528\u4e86\uff0c\u6ca1\u5173\u7cfb\uff0c\u5176\u4ed6\u9879 OK \u5373\u53ef\u3002\n\n<\/div>\n
      \u4e09\u3001L2TP \u90e8\u5206<\/p>\n
      \n\n\u6211\u4eec\u5148\u6765\u8fdb\u884c L2TP \u90e8\u5206\u7684\u914d\u7f6e\uff0c\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4f7f\u7528 xl2tpd \u6765\u5b9e\u73b0\u3002\n
      1. \u4ece\u6e90\u5b89\u88c5 xl2tpd<\/h4>\n\u8fd0\u884c\uff1a\n\nsudo apt<\/span>\n-<\/span>\nget<\/span>\n install xl2tpd<\/span>\n
      2. \u7f16\u8f91 L2TP \u914d\u7f6e\u6587\u4ef6<\/h4>\n\u8bf7\u6253\u5f00\u00a0\/etc\/xl2tpd\/xl2tpd.conf<\/code>\u00a0\u6587\u4ef6\uff0c\u7f16\u8f91\u65b9\u6cd5\u60a8\u5e94\u8be5\u5728\u4e0a\u9762\u5df2\u7ecf\u5b66\u4e60\u8fc7\u4e86\uff0c\u8fd9\u91cc\u4e0d\u518d\u8d58\u8ff0\u3002\n\nsudo nano <\/span>\n\/<\/span>\netc<\/span>\n\/<\/span>\nxl2tpd<\/span>\n\/<\/span>\nxl2tpd<\/span>\n.<\/span>\nconf<\/span>\n\n\u5220\u9664\u6587\u4ef6\u6240\u6709\u5185\u5bb9\uff0c\u66ff\u6362\u6210\uff1a\n\n[<\/span>\nglobal<\/span>\n]<\/span> ;<\/span>\n listen<\/span>\n-<\/span>\naddr <\/span>\n=<\/span> 192.168<\/span>\n.<\/span>\n1.98<\/span> [<\/span>\nlns <\/span>\ndefault<\/span>\n]<\/span>\n ip range <\/span>\n=<\/span> 10.1<\/span>\n.<\/span>\n1.2<\/span>\n-<\/span>\n10.1<\/span>\n.<\/span>\n1.255<\/span> local<\/span>\n ip <\/span>\n=<\/span> 10.1<\/span>\n.<\/span>\n1.1<\/span> require<\/span>\n chap <\/span>\n=<\/span>\n yes refuse pap <\/span>\n=<\/span>\n yes <\/span>\nrequire<\/span>\n authentication <\/span>\n=<\/span>\n yes name <\/span>\n=<\/span> LinuxVPNserver<\/span>\n ppp debug <\/span>\n=<\/span>\n yes pppoptfile <\/span>\n=<\/span> \/etc\/<\/span>\nppp<\/span>\n\/<\/span>\noptions<\/span>\n.<\/span>\nxl2tpd length bit <\/span>\n=<\/span>\n yes<\/span>\n\n\u505a\u4e00\u4e0b\u7b80\u5355\u7684\u89e3\u91ca\uff0c\u8fd9\u91cc\u7684\u00a0ip range<\/code>\u00a0\u9879\u662f\u8fde\u63a5\u4e0a\u6765\u7684\u7528\u6237\u6240\u83b7\u5f97\u5230\u7684\u670d\u52a1\u5668\u7aef\u5185\u7f51\u7684 IPv4 \u5730\u5740\u6bb5\u3002\u800c\u00a0local ip<\/code>\u00a0\u662f\u5728\u65b0\u5efa\u7684\u7f51\u7edc\u63a5\u53e3\u00a0pppX<\/code>\u00a0\u6240\u5360\u7528\u7684\u90a3\u4e2a IP \u5730\u5740\u3002\u56e0\u6b64\uff0c\u5b83\u4eec\u90fd\u4e0d\u80fd\u548c\u670d\u52a1\u5668\u7aef\u5185\u7f51\u7684\u4efb\u4f55 IP \u5730\u5740\uff08\u6bb5\uff09\u76f8\u91cd\u590d\u6216\u51b2\u7a81\u3002\u82e5\u4e0d\u80fd\u7406\u89e3\uff0c\u6ca1\u5173\u7cfb\uff0c\u5c31\u8bf7\u4e0d\u8981\u4fee\u6539\u8fd9\u4e2a\u503c\u3002\n\n\u4fee\u6539\u5b8c\u8bf7\u4fdd\u5b58\u3002\n\n\u6ce8\u610f\u5230\u4e86\u5417\uff0cpppoptfile<\/code>\u00a0\u8fd9\u4e00\u9879\u7684\u503c\uff0c\u6307\u5411\u5230\u4e86\u4e00\u4e2a\u73b0\u5728\u4e5f\u8bb8\u4e0d\u5b58\u5728\u7684\u76ee\u5f55\u4e0b\u9762\u7684options.xl2tpd<\/code>\u00a0\u6587\u4ef6\u3002\u5bf9\uff0c\u6211\u4eec\u73b0\u5728\u5c31\u6765\u914d\u7f6e PPP\u3002\n
      \u56db\u3001PPP \u7684\u914d\u7f6e<\/h3>\n\u9996\u5148\u5e94\u8be5\u5b89\u88c5 ppp \u5305\uff1a\n\nsudo apt<\/span>\n-<\/span>\nget<\/span>\n instal ppp<\/span>\n\n\u4ece xl2tpd \u6587\u6863\u4e2d\u590d\u5236\u4e00\u4e2a\u914d\u7f6e\u6587\u4ef6\u6837\u4f8b\u5230\u6211\u4eec\u7684\u914d\u7f6e\u6587\u4ef6\u76ee\u5f55\uff1a\n\ncp <\/span>\n\/<\/span>\nusr<\/span>\n\/<\/span>\nshare<\/span>\n\/<\/span>\ndoc<\/span>\n\/<\/span>\nxl2tpd<\/span>\n\/<\/span>\nexamples<\/span>\n\/<\/span>\nppp<\/span>\n-<\/span>\noptions<\/span>\n.<\/span>\nxl2tpd \\ <\/span>\n\/<\/span>\netc<\/span>\n\/<\/span>\nppp<\/span>\n\/<\/span>\noptions<\/span>\n.<\/span>\nxl2tpd<\/span>\n\n\u51fa\u4e8e\u7f51\u9875\u5bbd\u5ea6\u7684\u9650\u5236\uff0c\u8fd9\u662f\u4e2a\u591a\u884c\u547d\u4ee4\uff0c\u60a8\u53ef\u4e00\u6b21\u590d\u5236\u8fdb\u7ec8\u7aef\uff0c\u6216\u662f\u9009\u62e9\u9010\u884c\u8f93\u5165\u3002\n\n\u4e0b\u9762\u6253\u5f00\u7f16\u8f91\u8fd9\u4e2a\u00a0\/etc\/ppp\/options.xl2tpd<\/code>\uff0c\n\nsudo nano <\/span>\n\/<\/span>\netc<\/span>\n\/<\/span>\nppp<\/span>\n\/<\/span>\noptions<\/span>\n.<\/span>\nxl2tpd<\/span>\n\n\u5c06\u5149\u6807\u79fb\u52a8\u5230\u00a0ms-wins<\/code>\u00a0\u7684\u6240\u5728\u884c\uff0c\u5220\u9664\u5b83\u4eec\u3002\u5e76\u5c06\u00a0ms-dns<\/code>\u00a0\u9879\u8c03\u6574\u4e3a\u00a0Google Public DNS<\/a>\uff1a\n
      ms-dns 8.8.8.8\nms-dns 8.8.4.4<\/pre>\n\u5176\u5b83\u7684\u90fd\u4e0d\u8981\u52a8\uff0c\u4fdd\u5b58\u3002\n\n\u6dfb\u52a0\u7528\u6237\u8d26\u6237\uff0c\u201c\u8d26\u6237\u201d\u90fd\u5728\u00a0\/etc\/ppp\/chap-secrets<\/code>\u00a0\u4e2d\uff1a\n
      # Secrets for authentication using CHAP\n# client        server  secret                  IP addresses\n\u7528\u6237\u540d           *       \"\u5bc6\u7801\"                   *\nuserA           *       \"password\"              *<\/pre>\n\u00a0\n\n\u91cd\u542f\u4e00\u4e0b xl2tpd \uff1a\n\nservice xl2tpd restart<\/span>\n\n\u81f3\u6b64\uff0cIPSec\u3001L2TP\u3001PPP \u5e94\u8be5\u90fd\u914d\u7f6e\u5b8c\u6bd5\u4e86\u3002\u60a8\u53ef\u4ee5\u6d4b\u8bd5\u8fde\u63a5\uff0cxl2tpd \u7684\u65e5\u5fd7\u6587\u4ef6\u5e94\u8be5\u5305\u542b\u5728\u00a0\/var\/log\/daemon.log<\/code>\u00a0\u4e2d\u3002\n\n\u8fd9\u65f6\u867d\u7136\u53ef\u4ee5\u8fde\u63a5\u4e0a VPN\uff0c\u4f46\u662f\u53ea\u80fd\u8bbf\u95ee\u5185\u7f51\u3002\u9700\u8981\u8bf4\u660e\u7684\u662f\uff0cVPN \u7684\u529f\u80fd\u5c31\u662f\u8fd9\u4e9b\u3002\u81f3\u4e8e\u6211\u4eec\u6240\u8bf4\u7684\u201c\u4e0a\u7f51\u201d\uff0c\u90a3\u5c31\u662f\u4e0b\u9762\u6570\u636e\u8f6c\u53d1\u7684\u4e8b\u60c5\u4e86\uff0c\u548c VPN \u5df2\u7ecf\u65e0\u5173\u4e86\u3002\n\n\u00a0\n\n\u5982\u679c\u5728syslog\u91cc\u770b\u5230ipsec\u51fa\u73b0\u6388\u6743\u9519\u8bef\u53ef\u8fdb\u884c\u4ee5\u4e0b\u64cd\u4f5c:\n\nopenswan@openswanbox:~$ sudo cp \/etc\/ipsec.d\/private\/{openswanboxKey.pem,openswanboxkey_copy.pem}\nopenswan@openswanbox:~$ sudo openssl rsa -in \/etc\/ipsec.d\/private\/openswanboxkey_copy.pem -outform pem -out \/etc\/ipsec.d\/private\/openswanboxKey.pem\nwriting RSA key\nopenswan@openswanbox:~$ sudo service ipsec restart\n
      <\/div>\n
      \u4e94\u3001\u8f6c\u53d1\u8bbe\u7f6e<\/h3>\n\u9996\u5148\u5728\u7cfb\u7edf\u7684\u00a0\/etc\/sysctl.conf<\/code>\u00a0\u5c06\u00a0net.ipv4.ip_forward<\/code>\u00a0\u542f\u7528\uff0c\u5177\u4f53\u65b9\u6cd5\u662f\uff1a\n
      sudo nano \/etc\/sysctl.conf<\/pre>\n\u627e\u5230\u00a0net.ipv4.ip_forward<\/code>\u00a0\u4e00\u884c\uff0c\u5c06\u5149\u6807\u79fb\u52a8\u81f3\u5176\u524d\u9762\u7684 # \u53f7\u4e0a\uff0c\u5220\u9664 # \u53f7\uff0c\u5e94\u8be5\u770b\u8d77\u6765\u662f\u8fd9\u6837\u7684\uff1a\n
      # Uncomment the next line to enable packet forwarding for IPv4\nnet.ipv4.ip_forward=1<\/pre>\n\u8bf7\u4fdd\u5b58\u3002\u518d\u8fd0\u884c\n
      sysctl -p<\/pre>\n\u4ee5\u76f4\u63a5\u4ee4\u5176\u751f\u6548\u3002\n\n\u6211\u4eec\u4f7f\u7528\u53d1\u884c\u7248\u4e2d\u901a\u5e38\u5305\u542b\u4e86\u7684 iptables \u6765\u914d\u7f6e\u66f4\u5177\u4f53\u7684\u8f6c\u53d1\u3002\u4e3a\u907f\u514d\u7e41\u7410\u7684 iptables \u201c\u6c38\u4e45\u201d\u89c4\u5219\u8bbe\u5b9a\uff0c\u6211\u4eec\u8ba9\u670d\u52a1\u5668\u6bcf\u6b21\u542f\u52a8\u65f6\u90fd\u8bbe\u7f6e\u4e00\u6b21\uff0c\u8fd8\u9700\u8981\u7528\u5230\u00a0\/etc\/rc.local<\/code>\uff0c\u8bf7\u8fd0\u884c\uff1a\n
      sudo nano \/etc\/rc.local<\/pre>\n\u5c06\u4e0b\u9762\u5185\u5bb9\u590d\u5236\u8fdb\u6765\uff0c\u590d\u5236\u4e4b\u524d\u8fd9\u91cc\u5e94\u8be5\u5df2\u7ecf\u6709 5 \u884c\u6211\u4eec\u4e4b\u524d\u6dfb\u52a0\u7684\u4ee3\u7801\uff0c\u73b0\u5728\u53ef\u4ee5\u5c06\u4e0b\u9762\u8fd9\u884c\u6dfb\u52a0\u5728\u5b83\u7684\u4e0a\u9762\u6216\u4e0b\u9762\uff0c\u552f\u4e0d\u8981\u5c06\u5176\u52a0\u5728 5 \u884c\u4e2d\u95f4 \u2026\u2026\n
      iptables -t nat -A POSTROUTING -s 10.1.1.0\/24 -o eth0 -j MASQUERADE<\/pre>\n\u8fd9\u5c06\u5e94\u7528\u6211\u4eec\u521a\u521a\u8bbe\u7f6e\u7684\u5b50\u7f51\u00a010.1.1.0\/24<\/code>\u00a0\u7684\u6570\u636e\u5305\u53ef\u4ee5\u4ece\u00a0eth0<\/code>\u00a0\u63a5\u53e3\u88ab\u8f6c\u53d1\u3002\n\n\u8fd9\u65f6\uff0c\u60a8\u53ef\u4ee5\u8fd0\u884c\u00a0reboot<\/code>\u00a0\u91cd\u542f\u60a8\u7684\u670d\u52a1\u5668\uff0c\u6216\u5728\u7ec8\u7aef\u8fd0\u884c\u4e00\u6b21\u4e0a\u8ff0\u00a0iptables<\/code>\u00a0\u547d\u4ee4\uff0c\u5373\u53ef\u4ee4\u8f6c\u53d1\u7acb\u5373\u751f\u6548\u3002\n\n<\/div>\n
       <\/p>\n
       <\/p>\n
      \u5982\u679c\u670d\u52a1\u5668\u5728\u5185\u7f51\u53ef\u5728\u7f51\u5173\u5f71\u5c04\u7aef\u53e3: TCP: 1723\u00a0 UDP: 500,4500,1701<\/p>","protected":false},"excerpt":{"rendered":"
      \u81ea\u4ece\u5b9e\u9a8c\u5ba4\u653e\u4e86\u53f0 Linux \u670d\u52a1\u5668\u540e\uff0c\u53ef\u73a9\u7684\u4e1c\u897f\u5c31\u8d8a\u6765\u8d8a\u591a\u4e86\u3002\u867d\u7136\u8fd9\u53f0\u670d\u52a1\u5668\u4e3b\u8981\u7684\u5de5\u4f5c\u662f Web Server\uff0c\u4f46\u9274\u4e8e\u6211\u4eec\u90a3\u5c0f\u7ad9\u538b\u529b\u975e\u5e38\u4e4b\u5c0f\uff0c\u670d\u52a1\u5668\u8d44\u6e90\u7edd\u5927\u591a\u6570\u8fd8\u662f\u6d6a\u8d39\u7740\uff0c\u6240\u4ee5\u8ba9\u5b83\u591a\u5e72\u4e9b\u6d3b\u662f\u4e2a\u4e0d\u9519\u7684...<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[13,14,7],"class_list":["post-34","post","type-post","status-publish","format-standard","hentry","category-linux","tag-pptp","tag-server","tag-ubuntu"],"_links":{"self":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/34","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/comments?post=34"}],"version-history":[{"count":8,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/34\/revisions"}],"predecessor-version":[{"id":1701,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/34\/revisions\/1701"}],"wp:attachment":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/media?parent=34"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/categories?post=34"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/tags?post=34"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}