Repmgr.exe and Scanhost.exe communicate internally using dynamic ports

Products

• Carbon Black Cloud Endpoint Standard

Issue/Introduction

Repmgr.exe and Scanhost.exe communicate internally via IPC:port on a random netsh dynamic port that might conflict with another 3rd party application if it is designed to statically use a port from the dynamic port range.

Environment

• Carbon Black Cloud Console: Current Version
• Carbon Black Cloud Windows Sensor: All Versions
• Microsoft Windows OS: All Supported Versions

Cause

Repmgr.exe and Scanhost.exe communicate information about scanning and debugging information as part of the normal product functionality.

Resolution

It is an expected behavior that Repmgr.exe and Scanhost.exe communicate internally via IPC:port and that port number is chosen from the Microsoft netsh dynamic port range.

Additional Information

The Windows OS can list the dynamicport pool by using the following command in cmd prompt: 

 netsh int ipv4 show dynamicport tcp