Cb Response: Sensors no longer checking into minions but are still checking into master

[#1]

Environment

• CB Response Server: 6.x and Higher
• Recent changes were made to disable IPv6 in CB Response

Symptoms

• Overall backlog has increased
• Sensors will check into the master server, but communication to the minions fails

Cause

There is a misconfiguration for sensor communication in cb.conf

Resolution

1. Review EDR: Nginx will not start with IPv6 Error
2. Verify SensorServicesIP is set to 0.0.0.0 and not 127.0.0.1
3. If disabling IPv6 was not necessary to start Response services, comment out "LiveResposeIP", "WebsocketBindHost", and "SensorServicesIP" in cb.conf
4. Restart services - EDR: How to Restart Server Services