Configure web.config to access website only using IE

Question

I want my website to be accessed only using IE 6.0 or above. If anyone tries to access the website using any other browser I want to display a big warning message. Is it possible to configure this in web.config insted of checking via javascript. I am assuming something like in authentication we have customErrors attribute were we can set the custome error page in case of failure to authenticate the user.
Thank You.
Krishnaraj

Answer 1

You can use the HTTP_USER_AGENT header to see what's the browser that's submitting the request. For IE it would be like :

Mozilla/4.0 (compatible; MSIE 7.0 ; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.21022; .NET CLR 3.5.30729; InfoPath.2; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E)

PS: This header can be manipulated by the client and submitted to browser so it is not 100% reliable. Am curious to know why you want to restrict users to IE?

Answer 2

There is no direct support for this functionality. However, you could validate the browser in an implementation of IHttpHandler and register that in web.config.