In very short, how can I show the visitors of my website with a message if their browser/client doesn't support any of the TLS cipher-suite enabled on the application web server?
I have an existing web-application that attracts a lot of users. Due to security reasons, I want to enable only certain secure ciphers on the webserver and disable all weak TLS ciphers. This will possibly restrict some users to access my website if their browser doesn't support any of the allowed ciphers. In such a case, I want to show a friendly message to those users on their browser, instead of any default message from the browser.
One method I can think of is to: Show a popup to the users when they visit my website. I am not sure if there are any other better ways to achieve this. Hence, I am seeking some solutions to achieve the desired results which are widely used and accepted.