Technical Tip : IPSec Phase1 fails to connect if using any DH group other than 5 with FortiClient Android
Description
This article describes when IPSec Phase 1 DH group is selected 1, 2, or 14 on FortiClient Android, IPSec VPN connection cannot be established. This is a known issue.
Workaround
FortiClient Android's IPSec Phase 1 DH group default value is 5. This value should not be changed from default to other value(s).