Samsung GT-S8530 User Manual page 107

Option
Auth type
Pre-shared
key
Group ID
Encryption
Enable L2TP
secret
L2TP secret
4
When you are finished, select
›
Connect to a private network
1
In Menu mode, select
2
Select a private network.
Function
Select a certificate authority (CA)
certificate that the VPN server uses to
identify you.
Enter a pre-shared key.
Enter your group name.
Set to encrypt the VPN server.
Set to use the L2TP secret password.
Enter the L2TP secret password.
Save.
Settings
Connectivity
107
→ Connectivity → VPN.