Chrome OS:
1.Google how to put chrome book in Developer Mode....
2. Powerwash and put chrome book in Dev mode... (you will lose all cookies but you only have to do this once)
3. Alt+Ctl+T then type "shell" in crosh. ie
crosh> shell
4. get root access by typing "sudo su" ie
chronos@localhost / $ sudo su
5. then drop some iptables on that "B"
sudo iptables -F
sudo iptables -P INPUT DROP
sudo iptables -P FORWARD DROP
sudo iptables -P OUTPUT DROP
sudo iptables -A INPUT -i lo -j ACCEPT
sudo iptables -A INPUT -s 55.55.55.55 -j ACCEPT
sudo iptables -A INPUT -i tun0 -j ACCEPT
sudo iptables -A INPUT -j DROP
sudo iptables -A OUTPUT -o lo -j ACCEPT
sudo iptables -A OUTPUT -d 55.55.55.55 -j ACCEPT
sudo iptables -A OUTPUT -o tun0 -j ACCEPT
sudo iptables -A OUTPUT -j DROP
sudo ip6tables -F
55.55.55.55 = the ip address of your
VPN
When you power off the chromebook it will reset default iptables
You will have to do this for each user account/
VPN on the Chromebook every time you log into the user account (if you need to access eBay or PP).
Rock Solid and super easy to use....