Reference
allowed_connection_types
If specified, the user is constrained to the specified connection types.
STANDARDindicates a standard client TCP connection using the NATS protocol.WEBSOCKETindicates a WebSocket-based connection to NATS if thewebsocketsconfiguration is enabled.LEAFNODEindicates a connection established by configured leafnoderemoteon a server.MQTTindicates a connection established by an MQTT client to NATS if themqttconfiguration is enabled.Default value: n/a
Hot reloadable: Yes
Values
| Type | Description | Choices | 
|---|---|---|
[ string ] | - | STANDARD, WEBSOCKET, LEAFNODE, MQTT |