If there is a firewall on your test segment, verify that the firewall allows access through port 9000. Port 9000 is the default port that Cloud Pre-Filter uses to connect to the Cloud service. Open port 9000 if the firewall does not allow connection to the port.

If you do not use a proxy server for connection to Cloud Pre-Filter, use the following command from IMSS to verify that IMSS can connect to Cloud Pre-Filter:

If you use a proxy server to connect to Cloud Pre-Filter, verify the proxy server allows access through port 9000.