These error messages are from firefox when starting it whit wired connection:
Log in to network
You must log in to this network before you can access the Internet.
This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox may only connect to it securely. As a result, it is not possible to add an exception for this certificate.
Your connection is not secure
This message is when requesting to visit the askubuntu.com
The owner of askubuntu.com has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.
This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox may only connect to it securely. As a result, it is not possible to add an exception for this certificate.
https://askubuntu.com/ Unable to communicate securely with peer: requested domain name does not match the server’s certificate.
HTTP Strict Transport Security: true
HTTP Public Key Pinning: false
This one is when requesting to visit www.google.com
www.google.se uses an invalid security certificate. The certificate is only valid for the following names: *.ownit.se, ownit.se
Error code: SSL_ERROR_BAD_CERT_DOMAIN
https://www.google.se/ Unable to communicate securely with peer: requested domain name does not match the server’s certificate.
HTTP Strict Transport Security: false
HTTP Public Key Pinning: false
The connection changes between connected and disconnected for a short while.
These questions are those which could explain why there is no access to internet:
-am I behind a firewall ?
-is this a case of captive portal?
-or something else which I don't understand??
I need to know how to fix them?