Procedure
1. Go to Network
2. Click the add sign +
3. Choose options:
Interface: VPN
VPN Type: L2TP over IPsec
Service Name: SH VPN and ST VPN
4. Configured:
Configuration: Default
Server Address: sh.vpn.fxp.sg and st.vpn.fxp.sg
Account Name: their AD user account
5. Click Authentication Settings:
User Password: their AD user password
Pre-shared: fxpsg
Click Okay/Apply
6. Test to connect if connected all good