GlobeMeeting VOIP web meeting solution requires the use of two communication ports, being 443 (HTTP protocol over SSL) and 80 (Alternative HTTP port or otherwise known as web port).??What are these ports used for? Port 443 is used by the GlobeMeeting VOIP web meeting solution for the transfer data while Port 80 is used by GlobeMeeting's web portal.. These ports can be customized. We utilize these ports by default on our servers as company network administrators generally unblock them. Should you utilize or purchase your own server, you will have the liberty to use any given open port in your company, granted you are assured that a chosen port causes no conflict, which generally is a responsibility held by the network administrator.