Download the RPM Package
1. wget Click This Link

Install the RPM package
2. rpm -ivh pptpd-1.3.4-1.rhel5.1.i386.rpm

Make a Backup options.pptpd
3. cp /etc/ppp/options.pptpd /etc/ppp/options.pptpd.bak

Edit th options.pptpd file
4. vim /etc/ppp/options.pptpd
Enter the following:
name pptpd
refuse-pap
refuse-chap
refuse-mschap
require-mschap-v2
require-mppe-128
proxyarp
lock
nobsdcomp
novj
novjccomp
nologfd
ms-dns 202.84.64.38
ms-dns 202.84.64.38


Make a Backup Chap-secrets and Edit the file
5. cp /etc/ppp/chap-secrets /etc/ppp/chap-secrets.bak
6. vi /etc/ppp/chap-secrets

# Secrets for authentication using CHAP
# client server secret IP addresses
####### redhat-config-network will overwrite this part!!! (begin) ##########
####### redhat-config-network will overwrite this part!!! (end) ############
nayeem pptpd nayeem 10.10.10.100
rony pptpd rony 10.10.10.101





Make a backup pptpd.conf and Edit
7. cp /etc/pptpd.conf /etc/pptpd.conf.bak
8. vim /etc/pptpd.conf

option / etc / ppp / options.pptpd
logwtmp
localip 192.168.9.1
remoteip 192.168.9.11-30

9. /etc/init.d/pptpd start
10. /etc/init.d/pptpd restart
11. Add the following rules in iptables

iptables -A INPUT -p gre -j ACCEPT
iptables -A OUTPUT -p gre -j ACCEPT
iptables -A INPUT -p tcp --sport 1723 -s 192.168.50.20 -j ACCEPT
iptables -A OUTPUT -p tcp --dport 1723 -d 192.168.50.20 -j ACCEPT

[Here 192.168.50.20 is WAN side IP]