If your ArcGIS Enterprise is not available on the internet, the Geovonic Connect server will need to be given special access to your environment. There are a couple of options for this: –
[PREFERRED] Install and run the Geovonic Relay Service. The relay service runs as an agent to initiate a connection from inside the network to the Geovonic Connect server. This is a common model for providing secure access between SaaS applications and business systems running inside the firewall. Refer to this help article for installing the Geovonic Relay Service.
[ALTERNATE] Open up access to your network from the Geovonic servers.
You will need to work with your network administrators to plan for this access. Some common options include IP Whitelisting and/or an API Gateway running in the DMZ. Note: The Geovonic server requires access to any business system you intend to pull data from to display alongside the map or include in reports. The Geovonic Relay Service can provide access to all internal business systems; using the alternate approach may require network configuration for each system running inside the firewall.