How to Configure L2TP VPN Connection on Linux

First, go to your profile page to view the list of available servers and IPs

Right click on the "Connections" icon in the notification area

Click on ‘Edit connections’

You'll be asked to "Insert your password to perform administrative tasks"

For "Connection Name", type the server address you would like to connect to (e.g: se.waselpro.com )

IPsec configuration:

For "Remote server", insert the IP address matching the address you would like to connect to

For "Use pre-shared key for authentication", type: sharedsecret

Switch to L2TP tab:

Check the "Length bit" checkbox

Switch to PPP tab:

Check the "Challenge Authentication Protocol" checkbox only and leave other options unchecked

For "User name", type your WASEL Pro's registered e-mail address

For "Password", type your WASEL Pro's account password

Click "OK"

Now, go back to the "Connections" icon in the notification area and
click on the connection's name you just created, it will take a few seconds to connect.

To make sure your connected, go to www.waselpro.com and notice that your IP address has changed.