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What is the error message sshd: error: PAM: Authentication failure for illegal user

 

Information

Summary:

What is the error message sshd: error: PAM: Authentication failure for illegal user

Environment:

Product: LoadMaster, ECS Connection Manager

Version: Any

Platform: Any

Application: Any

Question/Problem Description:

What is the error message sshd: error: PAM: Authentication failure for illegal user

Steps to Reproduce:  
Error Message: Mar 22 07:01:27 HA-2 sshd[18660]: error: PAM: Authentication failure for illegal user user from TESTUSER from 1.2.3.4
Defect Number:  
Enhancement Number:  
Cause: This message means that a client with a source IP address of 1.2.3.4 tried to access the Kemp interface via SSH with the username "USERID", but the login failed because the username does not exist. 
Resolution: Investigate if the source IP address 1.2.3.4 is from a trusted workstation. 
Workaround:  
Notes: https://support.kemptechnologies.com/hc/en-us/articles/213906303-Web-User-Interface-WUI- 

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