PPTP VPN Server - Client

Installing and Using OpenWrt
1

Hi I am not able to connect more than one client to the PPTP server and I observe below errors while connecting the second client

Jun 12 10:48:57 EURLTP-17 pptpd[24091]: CTRL: Client 192.168.1.128 control connection started
Jun 12 10:48:57 EURLTP-17 pptpd[24091]: CTRL: Starting call (launching pppd, opening GRE)
Jun 12 10:48:57 EURLTP-17 pppd[24092]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded.
Jun 12 10:48:57 EURLTP-17 pppd[24092]: pppd 2.4.7 started by root, uid 0
Jun 12 10:48:57 EURLTP-17 pppd[24092]: Using interface ppp1
Jun 12 10:48:57 EURLTP-17 pppd[24092]: Connect: ppp1 <--> /dev/pts/18
Jun 12 10:49:28 EURLTP-17 pppd[24092]: LCP: timeout sending Config-Requests
Jun 12 10:49:28 EURLTP-17 pppd[24092]: Connection terminated.
Jun 12 10:49:28 EURLTP-17 pppd[24092]: Modem hangup
Jun 12 10:49:28 EURLTP-17 pppd[24092]: Exit.
Jun 12 10:49:28 EURLTP-17 pptpd[24091]: GRE: read(fd=6,buffer=611660,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
Jun 12 10:49:28 EURLTP-17 pptpd[24091]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
Jun 12 10:49:28 EURLTP-17 pptpd[24091]: CTRL: Reaping child PPP[24092]
Jun 12 10:49:28 EURLTP-17 pptpd[24091]: CTRL: Client 192.168.1.128 control connection finished

Kindly help

2

@kavizaisk, welcome to the community!

  • Is this an OpenWrt-specific question?
  • Have you installed kmod-nf-nathelper-extra?
  • What is the server...you OpenWrt or another device?
  • Who is 192.168.1.128?
3

@lleachii
Topology that I use:
(192.168.29.129, 10.1.1.100)STA-1 ----)) ((---(LAN-192.168.29.1) DUT (WAN port 192.168.1.128)-----Switch(192.168.1.2)
(192.168.1.2)Switch------Ubuntu PC(enp0s25: 192.168.1.59, enp0s25:1 10.1.1.1(PPTP server IP))

In the Ubuntu PC I have intsalled PPTP and using it as PPTP server and below are the confuigurations.

/etc/pptpd.conf
option /etc/ppp/pptpd-option
logwtmp
localip 10.1.1.1
remoteip 10.1.1.100-200

/etc/ppp/chap-secrets
test * test123 *
zest * zest123 *
zaisk * zaisk12 *

/etc/ppp/pptpd-options
name pptpd
refuse-pap
refuse-chap
refuse-mschap
require-mschap-v2
ms-dns 8.8.8.8
ms-dns 8.8.4.4
proxyarp
nodefaultroute
lock
nobsdcomp
novj
novjccomp
nologfd

I have not installed kmod-nf-nathelper-extra.