@priyamjm: it isn't mysterious, it is the server holding our video clips 
Your firewall seems to have categorized the server perfectly by the way, it is a server holding Audio/Video clips. I'm sure it is possible to turn off this restriction at your firewall level, perhaps you should explain to whoever manages your network that this host is the source for important technical videos that you need to view for your job.
We can't change our videos to be on the same domain as the site, for a variety of reasons, so hopefully you can get this change made at your end.
