The client notebooks (Windows 10) of our company can only access the Internet using a proxy in our security infrastructure. When they are connected to an external (W)LAN, they use Citrix Netscaler VPN for connecting internal services and our secure proxy. That perfectly works.
If they try to access an external WLAN with a captive portal web page though (for example in a hotel), they have to disable the proxy first, so that the captive portal can be loaded.
If users are allowed to remove the proxy, users easily find out, that they can access the web bypassing our secure proxy.
Do you have any idea how to connect to a WLAN with a captive portal when a company proxy is mandantory? Is there maybe a WLAN-connection-client with an internal browser and individual proxy settings?