Apple is phasing out kernel extensions (KEXTs). You may see a warning that the software is using a legacy extension. Currently, Kerio still functions despite this warning, but ensure you keep the client updated to the latest version provided by GFI to receive future "System Extension" updates.
Ask your company’s IT administrator for your personalized . kerio control vpn client mac m1 download
If you need a specific older build, you can find it in the Kerio Software Archive . Installation Steps for Mac M1 VPN Clients - GFI Apple is phasing out kernel extensions (KEXTs)
Major macOS updates frequently alter network stack permissions. Kerio still functions despite this warning