+Steve B Subscriber² Posted April 25, 2021 Subscriber² Share Posted April 25, 2021 I have to assume others have ran into this issue where the new 3rd party firewalls setup with Big Sur has caused headaches. I've tried McAfee, Intego and these firewalls create some kind of network extension and that appears to operate as the firewall. However, this setup kills my internet access on my virtual machines through parallels. Both Windows 10 and Ubuntu lose internet access unless I go into the MacOS Network Preferences and disabled the network extension the firewall creates....thus basically turning the firewall off. Assuming others have ran into this, has any discovered an actual fix? Link to comment https://www.neowin.net/forum/topic/1407288-big-sur-firewalls/ Share on other sites More sharing options...
goretsky Supervisor Posted April 26, 2021 Supervisor Share Posted April 26, 2021 Hello, Apple's change from requiring firewalls that were using kernel extensions (kext) to using system extensions (sext) in macOS 10.15.4 has required all of the firewall developers to rewrite their firewalls. As far as I know, you just have to wait for the replacements to arrive. Regards, Aryeh Goretsky Dick Montage 1 Share Link to comment https://www.neowin.net/forum/topic/1407288-big-sur-firewalls/#findComment-598640297 Share on other sites More sharing options...
+Steve B Subscriber² Posted April 28, 2021 Author Subscriber² Share Posted April 28, 2021 On 26/04/2021 at 01:44, goretsky said: Hello, Apple's change from requiring firewalls that were using kernel extensions (kext) to using system extensions (sext) in macOS 10.15.4 has required all of the firewall developers to rewrite their firewalls. As far as I know, you just have to wait for the replacements to arrive. Regards, Aryeh Goretsky Interesting. I was tinkering with stuff yesterday and managed to get it working once but was unable to duplicate the success. I had the VMs set to "default adapter" instead of the recommended "shared network" and on MacOS shared my wifi with "ethernet adapter en4" and "ethernet adapter en5". It worked then but, when I tried to pinpoint and duplicate, it wouldn't happen again. So apparently it was some random fluke. Lol goretsky 1 Share Link to comment https://www.neowin.net/forum/topic/1407288-big-sur-firewalls/#findComment-598640806 Share on other sites More sharing options...
+Steve B Subscriber² Posted July 10, 2021 Author Subscriber² Share Posted July 10, 2021 Well, whatever the issue was. It apparently is fixed now. I had uninstalled Netbarrier (Intego) just to not deal with it and recently reinstalled it and now my VMs work fine with Netbarrier. So all appears to be well, at least on my end. 😃 Link to comment https://www.neowin.net/forum/topic/1407288-big-sur-firewalls/#findComment-598659879 Share on other sites More sharing options...
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