ubuntu 16.04 中的 VPN PPTP 不起作用？

Question

我填写了这个答案中的详细信息。但是当我尝试连接时，我得到：

VPN Connection Failed '...because the VPN service stopped'

屏幕右上角的错误消息：

跑步

tail -f /var/log/syslog

给我这个：

Mar  9 21:34:20 me NetworkManager[6063]: ** Message: pppd started with pid 8330
Mar  9 21:34:20 me NetworkManager[6063]: <info>  [1489091660.9205] vpn-connection[0x1e067e0,54552dfa-6db2-4050-8b47-fd108b79f201,"VPN connection 1",0]: VPN plugin: state changed: starting (3)
Mar  9 21:34:20 me pppd[8330]: Plugin /usr/lib/pppd/2.4.7/nm-pptp-pppd-plugin.so loaded.
Mar  9 21:34:20 me NetworkManager[6063]: Plugin /usr/lib/pppd/2.4.7/nm-pptp-pppd-plugin.so loaded.
Mar  9 21:34:20 me NetworkManager[6063]: ** Message: nm-pptp-ppp-plugin: (plugin_init): initializing
Mar  9 21:34:20 me pppd[8330]: pppd 2.4.7 started by root, uid 0
Mar  9 21:34:20 me NetworkManager[6063]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 3 / phase 'serial connection'
Mar  9 21:34:20 me pppd[8330]: Using interface ppp0
Mar  9 21:34:20 me NetworkManager[6063]: Using interface ppp0
Mar  9 21:34:20 me NetworkManager[6063]: Connect: ppp0 <--> /dev/pts/19
Mar  9 21:34:20 me NetworkManager[6063]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 5 / phase 'establish'
Mar  9 21:34:20 me NetworkManager[6063]: nm_device_get_device_type: assertion 'NM_IS_DEVICE (self)' failed
Mar  9 21:34:20 me pppd[8330]: Connect: ppp0 <--> /dev/pts/19
Mar  9 21:34:20 me NetworkManager[6063]: <info>  [1489091660.9369] manager: (ppp0): new Generic device (/org/freedesktop/NetworkManager/Devices/6)
Mar  9 21:34:20 me pptp[8335]: nm-pptp-service-8312 log[main:pptp.c:350]: The synchronous pptp option is NOT activated
Mar  9 21:34:20 me NetworkManager[6063]: <info>  [1489091660.9505] devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
Mar  9 21:34:20 me NetworkManager[6063]: <info>  [1489091660.9506] device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found.
Mar  9 21:34:20 me pptp[8347]: nm-pptp-service-8312 log[ctrlp_rep:pptp_ctrl.c:259]: Sent control packet type is 1 'Start-Control-Connection-Request'
Mar  9 21:34:20 me pptp[8347]: nm-pptp-service-8312 log[ctrlp_disp:pptp_ctrl.c:781]: Received Start Control Connection Reply
Mar  9 21:34:20 me pptp[8347]: nm-pptp-service-8312 log[ctrlp_disp:pptp_ctrl.c:815]: Client connection established.
Mar  9 21:34:21 me pptp[8347]: nm-pptp-service-8312 log[ctrlp_rep:pptp_ctrl.c:259]: Sent control packet type is 7 'Outgoing-Call-Request'
Mar  9 21:34:21 me pptp[8347]: nm-pptp-service-8312 log[ctrlp_disp:pptp_ctrl.c:900]: Received Outgoing Call Reply.
Mar  9 21:34:21 me pptp[8347]: nm-pptp-service-8312 log[ctrlp_disp:pptp_ctrl.c:939]: Outgoing call established (call ID 34527, peer's call ID 32815).
Mar  9 21:34:51 me pppd[8330]: LCP: timeout sending Config-Requests
Mar  9 21:34:51 me NetworkManager[6063]: LCP: timeout sending Config-Requests
Mar  9 21:34:51 me NetworkManager[6063]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 11 / phase 'disconnect'
Mar  9 21:34:51 me NetworkManager[6063]: Connection terminated.
Mar  9 21:34:51 me pppd[8330]: Connection terminated.
Mar  9 21:34:51 me NetworkManager[6063]: ** Message: Terminated ppp daemon with PID 8330.
Mar  9 21:34:51 me NetworkManager[6063]: <warn>  [1489091691.9659] vpn-connection[0x1e067e0,54552dfa-6db2-4050-8b47-fd108b79f201,"VPN connection 1",0]: VPN plugin: failed: connect-failed (1)
Mar  9 21:34:51 me NetworkManager[6063]: <info>  [1489091691.9661] vpn-connection[0x1e067e0,54552dfa-6db2-4050-8b47-fd108b79f201,"VPN connection 1",0]: VPN plugin: state changed: stopping (5)
Mar  9 21:34:51 me NetworkManager[6063]: <error> [1489091691.9681] platform-linux: do-change-link[13]: failure changing link: failure 19 (No such device)
Mar  9 21:34:51 me NetworkManager[6063]: <warn>  [1489091691.9682] device (ppp0): failed to disable userspace IPv6LL address handling
Mar  9 21:34:51 me NetworkManager[6063]: <info>  [1489091691.9693] vpn-connection[0x1e067e0,54552dfa-6db2-4050-8b47-fd108b79f201,"VPN connection 1",0]: VPN plugin: state changed: stopped (6)
Mar  9 21:34:51 me NetworkManager[6063]: <info>  [1489091691.9710] vpn-connection[0x1e067e0,54552dfa-6db2-4050-8b47-fd108b79f201,"VPN connection 1",0]: VPN plugin: state change reason: unknown (0)
Mar  9 21:34:51 me NetworkManager[6063]: <info>  [1489091691.9719] vpn-connection[0x1e067e0,54552dfa-6db2-4050-8b47-fd108b79f201,"VPN connection 1",0]: VPN service disappeared
Mar  9 21:34:51 me NetworkManager[6063]: <info>  [1489091691.9727] devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
Mar  9 21:34:51 me NetworkManager[6063]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 1 / phase 'dead'
Mar  9 21:34:51 me NetworkManager[6063]: Terminating on signal 15
Mar  9 21:34:51 me NetworkManager[6063]: Child process /usr/sbin/pptp 217.145.41.15 --nolaunchpppd --loglevel 0 --logstring nm-pptp-service-8312 (pid 8333) terminated with signal 15
Mar  9 21:34:51 me NetworkManager[6063]: Modem hangup
Mar  9 21:34:51 me NetworkManager[6063]: ** Message: nm-pptp-ppp-plugin: (nm_exit_notify): cleaning up
Mar  9 21:34:51 me pptp[8335]: nm-pptp-service-8312 warn[decaps_hdlc:pptp_gre.c:220]: short read (-1): Input/output error
Mar  9 21:34:51 me pptp[8335]: nm-pptp-service-8312 warn[decaps_hdlc:pptp_gre.c:232]: pppd may have shutdown, see pppd log
Mar  9 21:34:51 me pppd[8330]: Terminating on signal 15
Mar  9 21:34:51 me pppd[8330]: Child process /usr/sbin/pptp 217.145.41.15 --nolaunchpppd --loglevel 0 --logstring nm-pptp-service-8312 (pid 8333) terminated with signal 15
Mar  9 21:34:51 me pppd[8330]: Modem hangup
Mar  9 21:34:51 me pptp[8347]: nm-pptp-service-8312 log[callmgr_main:pptp_callmgr.c:245]: Closing connection (unhandled)
Mar  9 21:34:51 me pptp[8347]: nm-pptp-service-8312 log[ctrlp_rep:pptp_ctrl.c:259]: Sent control packet type is 12 'Call-Clear-Request'
Mar  9 21:34:51 me pptp[8347]: nm-pptp-service-8312 log[call_callback:pptp_callmgr.c:84]: Closing connection (call state)
Mar  9 21:34:51 me pppd[8330]: Exit.

Answer 1

您可以使用以下步骤从终端配置 pptp VPN 服务器和客户端：

VPN 服务器设置：

安装和更新 VPN 服务器和客户端软件包：

$ sudo apt-get install pptpd ppp pptp-linux

必须为服务器配置四个文件：

• /etc/pptpd.conf
• /etc/ppp/pptpd-options
• /etc/ppp/options
• /etc/chat-secrets)

/etc/pptpd.conf：

选项 /etc/ppp/pptpd-options
日志文件
本地 IP 192.168.23.20
远程 IP 192.168.23.30-39

/etc/ppp/pptpd-选项：

名称pptpd
拒绝爸爸
拒绝章
拒绝-mschap
要求-msc​​hap-v​​2
要求-mppe-128
代理协议
无默认路由
锁
nobsdcomp
noipx ## 你不需要 IPX
mtu 1490 ## 可以帮助您的 linux 客户端断开连接
mru 1490 ## 可能会帮助您的 linux 客户端断开连接

/etc/ppp/选项：

lock

/etc/ppp/chap-secrets:

# 使用 CHAP 进行身份验证的秘密
# 客户端服务器秘密 IP 地址

[用户名] pptpd [用户密码] *

（[username] 和 [userpass] 是没有括号的条目。）

现在重新启动服务器：

$ sudo service pptpd restart

VPN 客户端设置：

涉及四个配置文件：

• /etc/ppp/peers/myvpn
• /etc/ppp/options.pptp
• /etc/ppp/chap-secrets
• /etc/ppp/ip-up.local

/etc/ppp/peers/myvpn：

# 用VPN服务器和VPN用户的主机名替换括号参数
远程名称 myvpn
链接名 myvpn
ipparam myvpn
pty "pptp [vpn 服务器] --nolaunchpppd "
姓名 [用户名]
使用peerdns
要求-mppe
垃圾邮件
不认证

# 采用 pptp-linux 包中的默认值
文件 /etc/ppp/options.pptp

/etc/ppp/options.pptp：

锁
不认证
拒绝爸爸
垃圾邮件
拒绝章
拒绝-mschap
nobsdcomp
节点板

/etc/ppp/chap-secrets:

# 使用 CHAP 进行身份验证的秘密
# 客户端服务器秘密 IP 地址
用户名 myvpn 密码 *

/etc/ppp/ip-up.local：

#!/bin/sh
network=`echo $IPREMOTE | awk -F\. '{打印 $1"."$2"."$3".0/24"}'`
路由添加 -net $network $IFNAME

连接 VPN 客户端：

$ sudo pon myvpn

使用以下命令结束 VPN 连接：

$ sudo poff myvpn