@podrunner:
VPNs meaning Virtual Private Networks, can encrypt and tunnel all Internet traffic to your machine. The iPad VPN supporting the L2TP, PPTP, or Cisco IPSec VPN protocols, can help you access private information through public network securely.

To use VPN on iPad, you need to configure VPN first. Here is the tip on how to setup.

Configure VPN:
Tap Settings > General > Network > VPN > Add VPN Configuration. Then use the VPN settings for your device.
* Server = your computer's external IP or hostname.
* Account = your account login
* RSA SecurID = OFF
* Password = your account password
* Secret = computer's secret, chosen during set-up.
* Send all traffic = ON

Turn VPN on or off

If you have created a VPN configuration, you would find the option to turn VPN on or off in the Settings.

First disable Wi-Fi on iPad, then start VPN in the settings. Wait until it finishes connecting and the status bar would has the VPN icon.

Note: iPad will drop VPN whenever changing the networks.

Source