Does Firefox or Brave give you an error like `ERR_CERT_INVALID` or similar?

The server causing the issue is running on start OS. I can access the server through windows or stock android. I cannot with Linux Ubuntu, except through private browsing. I have tried Firefox and Brave browsers.  The IP address is dynamic.

tech

Why can I often only access certain ip addesses on my network in private mode?

siggy47

The server causing the issue is running on start OS. I can access the server through windows or stock android. I cannot with Linux Ubuntu, except through private browsing. I have tried Firefox and Brave browsers.  The IP address is dynamic. 