I seem to be having issues with my guest network on a intermittent basis. The guests get on the network and get a correct ip address with no problem every time. the only thing is when they open their browser and try to go to google or any other web page, they are not being redirected to the login authentication page. We are just using the default web page. I am not sure if it is a DNS issue or some kind of certificate issue. It will just seem to start working again. Does anyone have any ideas. I have read the doccumentation on troubleshooting the web authentication.