Setup OpenVPN on Proxmox LXC

Following the previous tutorial of setting up LXC, now i would like to setup my OpenVPN into Proxmox LXC container!

Adding Dev/Tun into LXC

On the host machine, we need to enable Tun for OpenvVPN on our LXC machine, go to the path /var/lib/lxc/xxx/config or /etc/pve/lxc/xxx.conf and add the following to the last line,

lxc.cgroup.devices.allow = c 10:200 rwm
lxc.hook.autodev = sh -c "modprobe tun; cd ${LXC_ROOTFS_MOUNT}/dev; mkdir net; mknod net/tun c 10 200; chmod 0666 net/tun"

and that's all we need to do. restart the lxc container.

Adding tun file into LXC container

Now login to your LXC container and fire the following command,

cd /dev
mkdir net
mknod net/tun c 10 200
chmod 0666 net/tun

this will create the net/tun directory and file, restart the machine and we are good to go!

Install OpenVPN on Proxmox LXC

Installing OpenVPN can never be easier in just 5 minutes which i wrote previously. But i will just summarise here, all you need to do is to fire the following into your LXC using NoVNC or SSH,

wget --no-check-certificate -O ~/; bash

Follow all the instruction and we are good to go! And remember to port forward port 1194 and 53!

-A PREROUTING -i vmbr1 -p tcp -m tcp --dport 53 -j DNAT --to-destination
-A PREROUTING -i vmbr1 -p udp -m udp --dport 1194 -j DNAT --to-destination
-A PREROUTING -i vmbr1 -p tcp -m tcp --dport 1194 -j DNAT --to-destination