Learning All About Router

1. Configure VPDN with dial in VPN from Microsoft VPN Client

RO-PPTP(config)# vpdn enable
RO-PPTP(config)# vpdn-group PPTP-DIALIN
RO-PPTP(config-vpdn)# accept-dialin
RO-PPTP(config-vpdn)# protocol pptp
RO-PPTP(config-vpdn)# virtual-template 1
RO-PPTP(config-vpdn)# exit

2. Activate interface from IP Dial In to Microsoft VPN Client and LAN wan to access from out leat VPN ini.

RO-PPTP(config)# interface Ethernet5/0
RO-PPTP(config-if)# description DIAL-IN IP INTERFACE FROM OUTSIDE
RO-PPTP(config-if)# ip address 202.150.64.81 255.255.255.240
RO-PPTP(config-if)# no shutdown

RO-PPTP(config)# interface Ethernet5/1
RO-PPTP(config-if)# description SECURED-LAN
RO-PPTP(config-if)# ip address 192.168.0.254 255.255.255.0
RO-PPTP(config-if)# no shutdown

3. Create Virtual-template untuk sebagai virtual interface untuk diapply ke inbound VPN connections.
IP menggunakan unnunmbered E5/1 agar nantinya IP yang didapat oleh
Microsoft VPN client dalam satu subnet dengan IP Secured-LAN.
IP client diperoleh dari DHCP dari Pool Address pptp-pool (misalnya)

RO-PPTP(config)# interface Virtual-Template1
RO-PPTP(config-if)# ip unnumbered ethernet5/1
RO-PPTP(config-if)# peer default ip address pool pptp-pool
RO-PPTP(config-if)# ppp encrypt mppe auto required

(Bila Router Anda tidak support, lewatkan saja & di Micorosoft VPN client dibagian security, Require Data Encryptionnya tidak usah di check-list / centang).

RO-PPTP(config-if)# ppp authentication ms-chap ms-chap-v2 chap pap
(enable semua bila perlu chap/pap selain Microsoft)

4. Create Pool IP Address untuk VPN ‘pptp-pool’ (misal untuk 20 user / ip) & pastikan IP pool tersebut tidak dipakai di Secured-LAN

RO-PPTP(config)# ip local pool pptp-pool 192.168.0.100 192.168.0.119

5. Create Account untuk login VPN
RO-PPTP(config)# username vpdn password 0 pptp

6. Configure Autentikasi PPP vpn ini ke local (Router) atau selanjutnya ke Radius bila memang sudah available.
RO-PPTP(config)# aaa new-model
RO-PPTP(config)# aaa authentication ppp default local

Berikut Konfigurasi Lengkap (hanya vpdn saja) :

================================================
username vpdn password 0 pptp
!
aaa new-model
aaa authentication ppp default local
!
vpdn enable
!
vpdn-group PPTP-DIALIN
accept-dialin
protocol pptp
virtual-template 1
!
interface Ethernet5/0
description DIAL-IN IP INTERFACE FROM OUTSIDE
ip address 202.150.64.81 255.255.255.240
!
interface Ethernet5/1
description SECURED-LAN
ip address 192.168.0.254 255.255.255.0
!
interface Virtual-Template1
ip unnumbered Ethernet0/1
peer default ip address pool pptp-pool
ppp encrypt mppe auto required
ppp authentication ms-chap ms-chap-v2 chap pap

!
ip local pool defaultpool 192.168.0.100 192.168.0.119
================================================