FortiClient
FortiClient proactively defends against advanced attacks. Its tight integration with the Security Fabric enables policy-based automation to contain threats and control outbreaks. FortiClient is compatible with Fabric-Ready partners to further strengthen enterprises’ security posture.
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Article Id 383224
Description This article describes a limitation where multiple VPN clients are installed.
Scope FortiClient.
Solution

Fortinet does not recommend nor support the use of nested or parallel tunnels by any version or flavour (Windows, Mac and Linux) of FortiClient simultaneously with third party VPN clients.

 

This limitation applies for both FortiClient and FortiSASE environments.