Knowledge Base

Yes

Environment

Test Sensor connectivity to the Carbon Black (CB) signature update server

The Sensors are directed by the default Policy setting to contact http://updates2.cdc.carbonblack.io/update2

ping and nslookup can be run against updates2.cdc.carbonblack.io
Use a web browser to download the master.idx file to check for access denied errors
```
http://updates2.cdc.carbonblack.io/update2/idx/master.idx
```

These tests apply to Windows machines only as the local scanner is not available on other platforms
While the above tests confirm basic connectivity, there may still be issues with transfer of larger files through the local network
Ensure there is no packet inspection of traffic between the Sensor and CB's update server performed by firewall or proxy
Support for signature updates over https was added beginning with Sensor version 3.3.0.984, so testing connectivity over https may prove useful