Failing health checks - Timeout waiting for connection

Real Server is failing health checks, found the entry to support this in the log files, trying to understand exactly what it means.  

Product: LoadMaster

Version: Any

Platform: Any

Application: Any

What does "Timeout waiting for connection" mean?

• This message appears in your logs when a TCP-based health check is in use.
• You can view the logs by going to: System Configuration > Logging Options > System Log Files >The system message file and warning message file will both show entries for when a Real Server fails it's health check
• This indicates that the TCP connection is unable to form between the LoadMaster and the server.

• Environmental investigation is needed.
• Typical problems include network congestion or a static route on the server.
• Could be helpful to take a packet capture and verify the LoadMaster is getting responses from the Server to see if anything is blocking or filtering the packets