How to setup PPTP VPN on Mac OS X Leopard:
Important note: Name of VPN connection and username are given just for example. Use your own account details.To Start
1. Click the apple logo, and select System Preferences
2. Click on the Network icon under Internet & Network
3. If you see a locked padlock in the bottom left, click on it. Otherwise skip to step 5.
4. Enter your password in the dialog box
5. Click on the little + icon just above the padlock
6. Select VPN From the interface drop down.
7. Select PPTP From the VPN Type drop down
8. Enter the name of the company you are connecting to, and click Create
9. Enter the Server Address that your system administrator has provided to you, and your username. Also check the box that says Show VPN status in menu bar
10. Click on the Authentication Settings button, and enter your password
11. Almost done. Click the Apply button to save the changes.
12. In the top right of your screen, click the token icon that looks like this. From that, a menu will drop down. Click on the Connect link for your company name. This will initiate the VPN connection.
13. If all is well, after a few seconds you will be connected, and a timer will start showing you how long you have been connected
14. Find a setting in the VPN configuration under Advanced -> Options "Send all traffic over VPN connection" that does the above automatically.
Selecting this option has the effect of setting the default route for the system to that of the VPN
