I'm using Reliance Broadband and I want to block a certain website in a way so that whenever someone tries to access it,domain redirects to 404 error or some other page.As my broadband is connected to wireless router,I cannot block manually on all devices.So far I am using OpenDNS and it has a function to block a domain too but whenver I access the blocked site , it shows a page which reveals that page is blocked by administrator.Is there any alternative so that the user cannot know that the page is blocked? (Don't ask that why do I need to do this )