用的华为云开启pptpd之后一连就报错，麻烦大佬帮看下，谢谢！！

[shisusuya]

Apr 2 13:49:50 ecs-333088 pptpd[833354]: MGR: Manager process started
Apr 2 13:49:50 ecs-333088 pptpd[833354]: MGR: Maximum of 91 connections available
Apr 2 13:53:54 ecs-333088 pptpd[833402]: CTRL: Client 111.201.246.242 control connection started
Apr 2 13:53:54 ecs-333088 pptpd[833402]: CTRL: Starting call (launching pppd, opening GRE)
Apr 2 13:53:54 ecs-333088 pppd[833403]: Plugin /usr/lib64/pptpd/pptpd-logwtmp.so loaded.
Apr 2 13:53:54 ecs-333088 pppd[833403]: pppd 2.4.7 started by root, uid 0
Apr 2 13:53:54 ecs-333088 pppd[833403]: Using interface ppp0
Apr 2 13:53:54 ecs-333088 pppd[833403]: Connect: ppp0 <--> /dev/pts/1
Apr 2 13:53:54 ecs-333088 systemd-udevd[833406]: link_config: autonegotiation is unset or enabled, the speed and duplex are not writable.
Apr 2 13:53:54 ecs-333088 NetworkManager[692]: <info> [1648878834.9458] manager: (ppp0): new Ppp device (/org/freedesktop/NetworkManager/Devices/3)
Apr 2 13:54:24 ecs-333088 pppd[833403]: LCP: timeout sending Config-Requests
Apr 2 13:54:24 ecs-333088 pppd[833403]: Connection terminated.
Apr 2 13:54:24 ecs-333088 pppd[833403]: Modem hangup
Apr 2 13:54:24 ecs-333088 pppd[833403]: Exit.
Apr 2 13:54:24 ecs-333088 pptpd[833402]: GRE: read(fd=6,buffer=5603d162c480,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
Apr 2 13:54:24 ecs-333088 pptpd[833402]: CTRL: PTY read or GRE write failed (pty,gre)=(6,9)
Apr 2 13:54:24 ecs-333088 pptpd[833402]: CTRL: Client 111.201.246.242 control connection finished
Apr 2 13:55:07 ecs-333088 pptpd[833416]: CTRL: Client 111.201.246.242 control connection started
Apr 2 13:55:07 ecs-333088 pptpd[833416]: CTRL: Starting call (launching pppd, opening GRE)
Apr 2 13:55:07 ecs-333088 pppd[833417]: Plugin /usr/lib64/pptpd/pptpd-logwtmp.so loaded.
Apr 2 13:55:07 ecs-333088 pppd[833417]: pppd 2.4.7 started by root, uid 0
Apr 2 13:55:07 ecs-333088 NetworkManager[692]: <info> [1648878907.2130] manager: (ppp0): new Ppp device (/org/freedesktop/NetworkManager/Devices/4)
Apr 2 13:55:07 ecs-333088 pppd[833417]: Using interface ppp0
Apr 2 13:55:07 ecs-333088 pppd[833417]: Connect: ppp0 <--> /dev/pts/1
Apr 2 13:55:07 ecs-333088 systemd-udevd[833418]: link_config: autonegotiation is unset or enabled, the speed and duplex are not writable.
Apr 2 13:55:37 ecs-333088 pppd[833417]: LCP: timeout sending Config-Requests
Apr 2 13:55:37 ecs-333088 pppd[833417]: Connection terminated.
Apr 2 13:55:37 ecs-333088 pppd[833417]: Modem hangup
Apr 2 13:55:37 ecs-333088 pppd[833417]: Exit.
Apr 2 13:55:37 ecs-333088 pptpd[833416]: GRE: read(fd=6,buffer=562d598ec480,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
Apr 2 13:55:37 ecs-333088 pptpd[833416]: CTRL: PTY read or GRE write failed (pty,gre)=(6,8)
Apr 2 13:55:37 ecs-333088 pptpd[833416]: CTRL: Client 111.201.246.242 control connection finished
Apr 2 13:57:28 ecs-333088 systemd[1]: Started Session 43 of user root.
Apr 2 13:57:28 ecs-333088 systemd-logind[871]: New session 43 of user root.
Apr 2 13:59:58 ecs-333088 pptpd[833460]: CTRL: Client 111.201.246.242 control connection started
Apr 2 13:59:58 ecs-333088 pptpd[833460]: CTRL: Starting call (launching pppd, opening GRE)
Apr 2 13:59:58 ecs-333088 pppd[833461]: Plugin /usr/lib64/pptpd/pptpd-logwtmp.so loaded.
Apr 2 13:59:58 ecs-333088 pppd[833461]: pppd 2.4.7 started by root, uid 0
Apr 2 13:59:58 ecs-333088 NetworkManager[692]: <info> [1648879198.2132] manager: (ppp0): new Ppp device (/org/freedesktop/NetworkManager/Devices/5)
Apr 2 13:59:58 ecs-333088 pppd[833461]: Using interface ppp0
Apr 2 13:59:58 ecs-333088 pppd[833461]: Connect: ppp0 <--> /dev/pts/2
Apr 2 13:59:58 ecs-333088 systemd-udevd[833462]: link_config: autonegotiation is unset or enabled, the speed and duplex are not writable.
Apr 2 14:00:28 ecs-333088 pppd[833461]: LCP: timeout sending Config-Requests
Apr 2 14:00:28 ecs-333088 pppd[833461]: Connection terminated.
Apr 2 14:00:28 ecs-333088 pppd[833461]: Modem hangup
Apr 2 14:00:28 ecs-333088 pppd[833461]: Exit.
Apr 2 14:00:28 ecs-333088 pptpd[833460]: GRE: read(fd=6,buffer=564421113480,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
Apr 2 14:00:28 ecs-333088 pptpd[833460]: CTRL: PTY read or GRE write failed (pty,gre)=(6,9)
Apr 2 14:00:28 ecs-333088 pptpd[833460]: CTRL: Client 111.201.246.242 control connection finished

[astolia]

Apr 2 14:00:28 ecs-333088 pppd[833461]: LCP: timeout sending Config-Requests

可能是本地或远端的防火墙拦住了。看一下对应端口开放没有，有没有加载nf_conntrack_pptp内核模块，sudo modprobe nf_conntrack_pptp

[shisusuya]

Apr 2 14:00:28 ecs-333088 pppd[833461]: LCP: timeout sending Config-Requests

可能是本地或远端的防火墙拦住了。看一下对应端口开放没有，有没有加载nf_conntrack_pptp内核模块，sudo modprobe nf_conntrack_pptp

端口都开啦 这个sudo modprobe nf_conntrack_pptp也用了不知道啥情况

[astolia]

远端开ip转发没有？sudo sysctl net.ipv4.ip_forward如果输出是0，就sudo sysctl net.ipv4.ip_forward=1
两端用wireshark/tcpdump抓包看看发送的数据包对方收到没有，可参考 http://pptpclient.sourceforge.net/howto ... cp_timeout
还有据说需要在华为云安全组配置开放端口，不仅仅是远端机器上的防火墙，不过我没用过华为云不清楚。实在搞不明白找它的客服去

[shisusuya]

远端开ip转发没有？sudo sysctl net.ipv4.ip_forward如果输出是0，就sudo sysctl net.ipv4.ip_forward=1
两端用wireshark/tcpdump抓包看看发送的数据包对方收到没有，可参考 http://pptpclient.sourceforge.net/howto ... cp_timeout
还有据说需要在华为云安全组配置开放端口，不仅仅是远端机器上的防火墙，不过我没用过华为云不清楚。实在搞不明白找它的客服去

好的好的 我去试试去 感谢大佬！