Firewalls and Proxies
Glance Screen Share automatically senses and works with most proxy server and firewall configurations, without needing adjustments by technical staff and by identifying the best protocol for each participant's network environment.
Each participant reaches the Glance Screen Share service with an outward-bound connection, using TCP/IP to destination port 5500 (or 5501 with TLS). If that attempt is denied or times out, Glance Screen Share tunnels HTTP to port 80 (or HTTPS to 443). Since TCP is more efficient than HTTP, a company that blocks ports 5500 and 5501 might consider adding a rule to their firewall policy that allows outbound connections to those ports at glance.net. Glance Screen Share does not use peer-to-peer technology.