How to Test Client Connectivity to the Backend (Windows)

Products

• Carbon Black Cloud Endpoint Standard (formerly Cb Defense)
• Carbon Black Cloud Enterprise EDR (formerly Cb Threathunter)

Issue/Introduction

Test to confirm a client machine's ability to connect to the Carbon Black Cloud backend

Environment

• Carbon Black Cloud Console: All versions
• Carbon Black Cloud Sensor: All supported versions
• Microsoft Windows: All supported versions

Resolution

Test connection to the Sensor URL. (Example of a Prod05 URL)
Without connection to the sensor URL, the sensor will be unable to check-in. dev-prod05.conferdeploy.net is specific to Prod 05. For other environments see additional notes

1. Open a Powershell administrative prompt
2. Run command:

   Test-NetConnection -computername dev-prod05.conferdeploy.net -Port 443 -InformationLevel Detailed

3. Successful connection will show:

   TcpTestSucceeded : True 
   

Test connection to the Content Management URL
Without connection to the content management URL, the sensor is not fully operational or protected. This URL is the same for all backends.

1. Open a Powershell administrative prompt
2. Run command:

   Test-NetConnection -computername content.carbonblack.io -Port 443 -InformationLevel Detailed

3. Successful connection will show:

   TcpTestSucceeded : True

Test connection to the Signature Update URL
Only needed for the Endpoint Standard sku. Without connection to the Signature URL, the sensor will not be able to receive signature pack updates. This URL is the same for all backends.

1. Open a Powershell administrative prompt
2. Run command:

   Test-NetConnection -computername updates2.cdc.carbonblack.io -Port 443 -InformationLevel Detailed

3. Successful connection will show:

   TcpTestSucceeded : True
   

Additional Information

Backend	Sensor URL
Prod 01	https://devices.confer.net/
Prod02	https://dev5.conferdeploy.net/
Prod05	https://dev-prod05.conferdeploy.net/​
Prod06	https://dev-prod06.conferdeploy.net/​
Prod07	https://dev-prodnrt.conferdeploy.net
ProdSYD	https://dev-prodsyd.conferdeploy.net

• Port 54443 is a backup port for the Sensor URL
• Additional URLs can be tested for connectivity from the Firewall Guide here.
• Live Response can also be used to test the connection:

  execfg powershell Test-NetConnection -computername <URL> -Port 443 -InformationLevel Detailed