Is using a proxy server supported?
We do not support connections via a proxy server since HTTP proxies do not support TCP traffic, which we use for collaboration features.
How secure is it then?
Proxies would not make Gravity Sketch more secure because traffic is already encrypted. Having a proxy can also cause performance-related problems through latency and packet loss, which would result in a negative experience in Gravity Sketch as real-time streams are essential.
This is the same position as Microsoft regarding use of their Teams or Skype for Business products (see here)
To allow access, depending on your organization’s security requirements, you can give users direct access to the internet (controlled by a firewall) or use a VPN solution instead of a proxy server.