I got a report of this website today: http://www.c-spanclassroom.org/executive/video.asp From outside our network, everything works fine. From inside our network you can access the page, but none of the video links work. It's not like they aren't passing through the ISA server, they don't even try. For example, when I click on the link for the first video (rtsp://video.c-span.org/education/cclass/e/082505_eligibility.rm), it immediately gives me a "Cannot find server or DNS Error" page. I checked the logs on the ISA server, and nothing at all is showing up. If I remove the "rtsp://"; part, it tries to connect but brings me to a MSN search page... Where would I start looking for the problem in this case?