This article is now deprecated - you will be redirected to the updated version at https://support.tokbox.com/hc/en-us/articles/115000210424-What-are-the-firewall-requirements-to-use-TokBox- shortly.
Running OpenTok requires allowing access to its services over specific ports in order to work. A network administrator in your organization can configure these firewall settings.
Minimum Requirement: The minimum Requirement is that TCP port 443 is open. Some firewall/proxy rules only allow for SSL traffic over port 443. You will need to make sure that non-web traffic can also pass over this port.
Better Experience: In addition to the minimum requirements being met, we also recommend that UDP port 3478 is open.
Best Experience: For the best possible experience, we recommend that UDP ports 1025 - 65535 be open.