iPhone L2TP VPN configuration
Step 1. Start from home screen. Go to 'Settings'.
Step 2. Go to 'General'.
Step 3. Go to 'Network'.
Step 4. Then proceed to 'VPN'.
Step 5. Tap on 'Add VPN Configuration...'.
Step 6. Choose 'L2TP' tab.
Enter Server, Account, Password and Secret. You can find SecurityKISS PSK secret in Client Area Panel on L2TP tab.
'Send All Traffic' should be ON.
Save the Configuration and go back.
Step 7. Now turn VPN connection ON.
Please wait while it connects.