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fortega
Staff
Staff
November 25, 2025

Technical Tip: Behavior in FortiClient Mac (MacOS) IPsec VPN and split tunnel

  • November 25, 2025
  • 0 replies
  • 760 views
Description This article describes the behavior when FortiClient macOS does not add routes included in the split tunnel.
Scope FortiClient MacOS v7.0.x, v7.2.x, and v7.4.x.
Solution

There are some scenarios where there are a large numbers of IP/subnets that needs to be added into the split tunnel configuration.

 

By design, FortiClient macOS uses a size of 4096-character array to store split IP/subnets. This translates to FortiClient MacOS can install a minimum of 128 subnets and a maximum of 256 subnets. 

 

If there is a scenario where split tunnel configuration has more than 128 IP/subnets, it is recommended to summarize the subnets in the FortiGate configuration to guarantee the functionality of split tunneling.

 

Related documents:

What Is VPN Split Tunneling? 

Technical Tip: FortiClient Dialup IPsec VPN (Split Tunneling)