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takeso21425
takeso21425
New Member
April 24, 2025
Solved

I want to use FortiClient VPN-Only in an offline environment

  • April 24, 2025
  • 1 reply
  • 845 views

How can I use [FortiClient VPN-Only] in an offline environment?

 

I would like to perform IPsec remote access testing in a closed testing environment, but FortiClient VPN-Only is not functioning correctly offline. When I click "Connect," nothing happens, and it returns to the screen before entering the password.

No packets are reaching the FortiGate side, and when I perform a packet capture on the client, no packets are being generated.

In the testing environment, I am using an L3 switch as a pseudo-internet environment, and there is a Ping response between the client and the FortiGate. The client’s default gateway is the IP address of the FortiGate’s listening port. Even when I connect the client directly to the FortiGate’s listening port without using the pseudo-internet environment, the issue persists.

 

Is it not possible to use FortiClient VPN-Only in a completely offline environment?

 

Environment in use:

FortiGate 60F Version 7.4.5 build 2702
Windows 11 FortiClient VPN-Only 7.4.3.1790

Best answer by funkylicious

there should be no restrictions on where to use forticlient, maybe it just has something to do with the version that you are using.

have you tried a lower version like 7.4.2 or 7.4.1 for FortiClient and see if the issue persists ?

1 reply

funkylicious
SuperUser
funkyliciousAnswer
SuperUser
April 24, 2025

there should be no restrictions on where to use forticlient, maybe it just has something to do with the version that you are using.

have you tried a lower version like 7.4.2 or 7.4.1 for FortiClient and see if the issue persists ?

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