Version 5.0.0.74 and above.

The File Helper Service config file can now be updated to allow for clients with particularly stringent firewall rules.

In the config file change the 'ServiceBusConnectivityMode' setting to:

1. 'AutoDetect' (default/recommended setting)

2. 'Https'

3. 'Http'

4. 'Tcp'

'AutoDetect' will attempt to use TCP first, failing that it will attempt to fall back to HTTP.

The 'Http'/'Https' settings may result in a slight lag for the messages to come through on the service bus (this is normal, but is likely to be undetectable). Only use these settings if the client's firewall settings prevent TCP connections.

For fault finding, it is recommended to start at the top of the above list and work your way through them until you find one that works. Failing that, you will need to get the client to open firewall ports accordingly.

The 'Tcp' connection mode uses a destination port in the range of 9350 to 9354.