The customers obviously have access to our network, so the events could be directed here. However, we are not running sentry on-premise. Instead, we are sending the events to a sentry.io hosted server.
For example, is it possible to run an haproxy on our network, and then configure the DSN on the browser to point to that, and then configure the proxy to then route the request over to sentry.io? Or, is it more involved than that?