WP log showing U00003623 Detected possible intrusion from '<IP address>:39206'

Products

• CA Automic Workload Automation - Automation Engine
• CA Automic One Automation

Issue/Introduction

WP logs showing many messages U00003623 Detected possible intrusion from '<ip address>:39206'. The Automation Engine received a message without valid login.  A trace of the entire message will be written to the Server log. 

Messages are with different IP Addresses. What is the cause of above messages in wp log ?

Environment

Release : AWA 21.02

Component : Engine

Resolution

The log entry "  U00003623 Detected possible intrusion from '<ip address>:39206'. 
The Automation Engine received a message without valid login. A trace of the entire message
 will be written to the Server log."  

Above message is due to the JWP does not find a user in the user list.

If this error happening frequently and you can reproduce with trace . Open a case with support.