Hi,
I'm using CentOS 5 and I use following configuration.

file /etc/ppp/options.pptpd as below: -

name pptpd
refuse-pap
refuse-chap
refuse-mschap
require-mschap-v2
require-mppe-128
proxyarp
lock
nobsdcomp
novj
novjccomp
nologfd

file /etc/pptpd.conf as below: -

option /etc/ppp/options.pptpd
logwtmp
localip 192.168.2.1
remoteip 192.168.2.11-15

/etc/ppp/chap-secrets as below: -

# Secrets for authentication using CHAP
# client server secret IP addresses
ffidx pptpd passwrd *

service pptpd start

/etc/sysctl.conf

net.ipv4.ip_forward = 1

sysctl -p




But when I dial from windows it shows error:619

and

tail -f /var/log/messages

Feb 4 18:15:15 trixbox1 pptpd[6673]: CTRL: Client 192.168.1.221 control connection started
Feb 4 18:15:15 trixbox1 pptpd[6673]: CTRL: Starting call (launching pppd, opening GRE)
Feb 4 18:15:15 trixbox1 pppd[6674]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so is for pppd version 2.4.3, this is 2.4.4
Feb 4 18:15:15 trixbox1 pptpd[6673]: GRE: read(fd=6,buffer=804e560,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
Feb 4 18:15:15 trixbox1 pptpd[6673]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
Feb 4 18:15:15 trixbox1 pptpd[6673]: CTRL: Client 192.168.1.221 control connection finished

note there is no firewall enabled, i'm using webmin and in firewall all traffic are allowed.

I have no idea stuck here badly.

Hi,
I found solution. I downgrade my system from "trixbox-2.8.0.1" to "trixbox-2.6.1-i386" and follow guide from following:

http://blog.doylenet.net/?p=17

I installed pptpd from rpm.

It is working now.