These tools typically possess some feature to assess a device’s or network’s health and alert administrators of any infection present. Companies use these tools to protect their devices and the sensitive information within them.

Most tools possess some form of firewall to stop any virus, worm, trojan, or adware that attempts to penetrate the device. These tools typically contain detection features for identifying potential malware and computer viruses that attempt to, or actually penetrate, a device. Hopefully this helps others to get Fortigate IPSec VPN work with both Mac OS Big Sur and MacOS Catalina (both tested with our config).Endpoint antivirus software is any program that prevents and/or detects the presence of malicious software within an endpoint device. Setup IPSec VPN in Mac OS Netwerk preferences (see also ) using fields server address, account name (my personal account name), password (my personal account password) and under 'Authentication settings' the shared secret (the shared password) and Group Name (had to get this from the firewall maintainer and never had to fill this in for FortiClient before).Eventually the configuration at fortigate firewall stayed exactly as it was, the only configuration I needed to add locally (with respect to using the FortiClient software) is to add a group name under 'Authentication Settings'. I am always amazed by the lack of Fortinet response in this type of issues, as the solution seems pretty simple in the end. Ok, so after quite a bit of testing by the people who maintain our firewall, we managed to make IPSec VPN work with native Mac OS Big Sur VPN client. Then all works as usual (except the VPN obviously).

The only way to get out of this situation is to click 'connect to VPN' in forticlient again and before it gets to the error click 'disconnect'. For example I open app 'notes' and cannot type anything (with every keystroke a sound is played but nothing is written). After that, the keyboard (Macbook 16 inch) even fails to register any pressed buttons. And also I cannot access a intranet http/https page.Īlso tried multiple versions of 6.0.x but they all fail to connect and show 'Connection was terminated unexpectedly.

I tried Forticlient version 6.4 which seems to connect just fine (I get an IP in expected range), but ssh/ping does not work. Just installed macOS Big Sur and cannot get a connection with Fortinet firewall VPN anymore, while it did work with macOS Catalina.

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