无法连接到pptpd vpn

Question

我正在使用Centos 7，在我的服务器上启用了firewalld，目前我无法连接到pptpd vpn。

日志

Dec 26 23:34:39  pptpd[28944]: CTRL: Client 39.55.196.181 control connection started
Dec 26 23:34:39   pptpd[28944]: CTRL: Starting call (launching pppd, opening GRE)
Dec 26 23:34:39   pppd[28945]: Plugin /usr/lib64/pptpd/pptpd-logwtmp.so loaded.
Dec 26 23:34:39   pppd[28945]: pppd 2.4.5 started by root, uid 0
Dec 26 23:34:39   pppd[28945]: Using interface ppp0
Dec 26 23:34:39    pppd[28945]: Connect: ppp0 <--> /dev/pts/5
Dec 26 23:35:09   pppd[28945]: LCP: timeout sending Config-Requests
Dec 26 23:35:09   pppd[28945]: Connection terminated.
Dec 26 23:35:09   pppd[28945]: Modem hangup
Dec 26 23:35:09   pppd[28945]: Exit.
Dec 26 23:35:09   pptpd[28944]: GRE: read(fd=6,buffer=7f6470314480,len=8196) 
from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
Dec 26 23:35:09   pptpd[28944]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
Dec 26 23:35:09   pptpd[28944]: CTRL: Client 39.55.196.181 control connection finished

Firewalld启用了以下端口1723/tcp

我的options.pptpd如下所示

name pptpd
refuse-pap
refuse-chap
refuse-mschap
require-mschap-v2
ms-dns 8.8.8.8
ms-dns 8.8.4.4
proxyarp
lock
novj
novjccomp
nologfd

请有人让我知道我在哪里做错了什么吗?还有什么是我应该在火炉里做的吗？

谢谢

Answer 1

谢谢，但是这个问题已经解决了，因为firewalld阻塞了pptp.conf中配置的本地和远程in。

通过以下命令防火墙-cmd-add=xx.x/24解决了问题

谢谢