OpenVPN on 4.0.2CD

The goal is to create a simple VPN between two machines on a network. The VPN software will be OpenVPN under Knoppix 4.0.2CD using a persistent disk image (PDI).

Setup

Create and boot with a persistent disk image. 500 MB should be plenty big.

Installing

Following notes from http://openvpn.net/howto.html#install

apt-get update
ls -la /dev/net/tun
apt-get -y install openvpn carpaltunnel
# Answer "yes" when the installer asks about creating the tun device.
# Answer "no" when asked about stopping VPN service (there is none)
ls -la /dev/net/tun

Configuring

Following example from http://openvpn.net/man.html#lbAV

lsmod| grep tun
modprobe tun
lsmod| grep tun

Run and test with two machines

This is on two machines connected to a router with a DHCP server that serves up IP addresses in the 192.168.0.xxx range.

Setup 1: simple tunnel without security

On first machine 192.168.0.200:

sudo openvpn --remote 192.168.0.201 --dev tun \
  --ifconfig 10.4.0.1 10.4.0.2 --verb 9 >