1. Initial configurations (only once at the first time)
Start the "Settings" application on Android.
In the "Wireless & Networks" category, open "More..." and tap "VPN".
Click the "Add VPN profile" button to create a new VPN connection setting.
2. A new VPN connection setting editing screen will appear. Input something string on the
"Name" field (e.g. "vpn" ), and choose "L2TP/IPSec PSK" in the "Type" field.
Input server
[Hidden Content]
3. Scroll down the configuration screen, and tap the "Show advanced options" checkbox if appropriate.
Specify "vpn" (3-letters) on the "IPSec pre-shared key" field. Specify "0.0.0.0/0" on the "Forwarding routes" field.
Make sure that you input the "Forwarding routes" field correctly. If not, you cannot communicate via VPN.
After all inputted, tap the "Save" button and save the VPN connection setting.
4. Open the VPN connection settings list and tap a setting,
At the first time of using, you have to input "Username" and "Password" fields.
Specify "vpn" (3-letters) on both "Username" and "Password" fields, and check "Save account information" .
Tap "Connect" to start the VPN connection.
After the VPN connection will be established, the indicate string "Connected" will be displayed next to the VPN connection setting,
and the status indication area of Android will show "VPN activated" message. You can tap the message to see the current status of the VPN connection.
FOR PC/Laptop :
1. From the Windows 10 Start Menu, click Settings.
2. Click Network & Internet.
3. On the left navigation menu, select VPN.
4. Click Add a VPN connection.
5. In the VPN provider text box, select Windows (built-in).
6. In the Connection name text box, BAHALA kayo kng ano ipapangalan nyo
7. In the Server name or address text box, LAGAY nyo po yong nasa taas na nilagay ko
8. From the VPN Type drop-down list, select Layer 2 Tunneling Protocol with IPSec (L2TP/IPSec).
9. Type of sign in is user/pass
10. Pre-shared key, username, and password : vpn
11. Click Save
See photos below :