I would probably check whether the issue comes from the dispVM or the browser. Try to ping some well-known IPs from your dispVM (like google’s DNS: 18.104.22.168), to make sure the qube actually reaches the Internet when connected to sys-firewall.
If not, there probably is an issue with your qube’s configuration, some kind of filtering maybe?
If there is, it’s probably an issue with the browser’s configuration, maybe some kind of proxy?
I have not familiar with whonix, nor brave browser so I won’t be of much more help.
Thanks for the tips!
Well, over sys-firewall, as a test I updated dispVM, and it works. I also installed iputils, and tried ping. And it works either against IP or dns names. Browser still not getting to internet. Disabled all settings in Brave to a bare, unsecured browser, still no luck. Switched to sys-whonix, going to internet via sys-firewall, of course, and it works?!
Weird of the wierdest man…
OK, I’ll create new template and dvm-template, all from the default bare one, and will get back with the outcome…