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sshd: error: kex_exchange_identification: Connection closed by remote host

Updated: 

 

Information

 

Summary:

What does "sshd: error: kex_exchange_identification: Connection closed by remote host" mean in the logs?
Environment:

Product: LoadMaster

Version: Any

Platform: Any

Application: Any
Question/Problem Description:

What does "sshd: error: kex_exchange_identification: Connection closed by remote host" mean in the logs?
Steps to Reproduce:  
Error Message: sshd: error: kex_exchange_identification: Connection closed by remote host
Defect Number:  
Enhancement Number:  
Cause:

These errors indicate that the LoadMaser is seeing an SSH connection opened, but nothing is being done with the SSH connection, such as authentication to the LoadMaster's console. This connection is then closed by the end user.

This is typical of monitoring solutions or other automated processes that rely on an SSH connection.
Resolution: If your LoadMaster is monitored via SSH, simply exclude the LoadMaster from being monitored. Otherwise, it would be a good idea to determine which devices are forming an SSH connection and prevent those connections from reaching the LoadMaster.
Workaround:  
Notes:

https://support.kemptechnologies.com/hc/en-us/articles/6370901430157-Troubleshooting-Connectivity-to-and-from-the-LoadMaster?source=search&auth_token=eyJhbGciOiJIUzI1NiJ9.eyJhY2NvdW50X2lkIjoyMjE4ODcsInVzZXJfaWQiOjQxNjgxNjE1OSwidGlja2V0X2lkIjoxNzM0NTIsImNoYW5uZWxfaWQiOjYzLCJ0eXBlIjoiU0VBUkNIIiwiZXhwIjoxNjU4NjY0NjE3fQ.4DkZsn9TRv5DIZcWa_uNI8K_0rsbj4MW7xFLfzhWe7Q
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