L2TP/IPSec (Layer 2 Tunneling Protocol) is the easiest way to setup a VPN connection on OSX computers. OSX supports this protocol natively. The point-to-point communication between the client computer and the VPN server is encrypted using IPSec suite to provide end-to-end encryption.
Setting up a VPN Connection
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Open up your “System Preferences” and click on “Network”. Click on the “Notifications” icon.
Click the “+” button to add a new network connection. |
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Choose “VPN” as the interface and choose “L2TP over IPSec” as the VPN type.
Name your connection “Bilkent-L2TP”. |
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Fill in the server address (vpn-ng.bilkent.edu.tr) and your VPN account name.
Then click “Authentication Settings”. |
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Fill in your VPN account password and enter “bilkent” (all lowercase, without the quotes) as the shared secret. |
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In the “Options” tab, check all boxes except the one related to verbose logging. |
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When a VPN connection is established, you should see the VPN icon and connection duration at the top right of your screen. |
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Visit http://whatismyasn.org and make sure that you are connected to the VPN server. |