iSee uses real time video and audio which for full performance uses of a number of TCP and UDP ports.If iSee detects that UDP ports are being blocked by a firewall it will automatically go into encapsulation mode so that can be used over TCP ports - although some corporate networks block these ports as well.If you require unblocking of your corporate network for iSee, have your network team contact us at support@iseevc.com and we will provide a list of of required ports, URL's and IP addresses to unblock for your network.