Configure PPTP Server On Cisco Router

Cisco router can be used as VPN server, using PPTP, for client from internet accesing private network.

Below are steps for configuring PPTP on Cisco router,
1. Enable aaa authentication and create user,

aaa new-model

aaa authentication login default local
aaa authentication ppp default local
aaa authorization exec default local

user cisco password cisco

2. Enable VPDN and configure VPDN group

vpdn enable
!
!
vpdn-group PPTP
! Default PPTP VPDN group
 accept-dialin
  protocol pptp
  virtual-template 2

3. Create Vitrual_Template

interface Virtual-Template2
 ip unnumbered FastEthernet0/0
 peer default ip address pool poolipnetconfig
 ppp encrypt mppe auto required
 ppp authentication ms-chap ms-chap-v2

4. Create IP Pool for user

ip local pool poolipnetconfig 172.31.1.1 172.31.1.6

5. Test your configuration

Complete configuration on Cisco router:

PPTP-Server#sh run
Building configuration...

Current configuration : 5669 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname PPTP-Server
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$WMq0$BZpIxsWnzmEI0fCvWADGd0
!
aaa new-model
!
!
aaa authentication login default local
aaa authentication ppp default local
aaa authorization exec default local
!
aaa session-id common
!
resource policy
!
ip cef
!
!
!
!
ip domain name ipnetconfig.com
ip name-server 192.168.0.1
ip ssh version 2
vpdn enable
!
!
vpdn-group PPTP
! Default PPTP VPDN group
 accept-dialin
  protocol pptp
  virtual-template 2
!
!
!
username root privilege 15 secret 5 $1$E1t3$.GKaPz1xFuph9r/fRqxTO.
!
!
!
!
interface FastEthernet0/0
 ip address 192.168.1.254 255.255.255.0
 duplex auto
 speed auto
!
interface FastEthernet0/1
 no ip address
 duplex auto
 speed auto
!
!
!
interface Virtual-Template2
 ip unnumbered FastEthernet0/0
 peer default ip address pool poolipnetconfig
 ppp encrypt mppe auto required
 ppp authentication ms-chap ms-chap-v2
!
ip local pool poolipnetconfig 172.31.1.1 172.31.1.6
ip route 0.0.0.0 0.0.0.0 192.168.1.1
!
!
ip http server
ip http secure-server
!
!
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
!
scheduler allocate 20000 1000
end

PPTP-Server#

To configure PPTP client on Windows 7, see my post How To Configure PPTP Client On Windows 7.