End user login to CI server

Hello,

In R/3 landscape there are 4 Application servers and CI Cluster (2 separate servers) and DB Cluster (2 separate servers)

In one of the CI Server, Message server and Enrique server is running. (allocated virtual IPs for this MSG server & ENQ server)

(End user will connect to the message server)

So when a request comes to message server, it will direct the request to one of the Application servers.

So according to the setup, all the users should reside in the Application servers. End- users are not allowed to login to CI server.

Only BASIS admins can login to this.

But when checking using al08, time to time it shows few users are login to this CI server (erpcv)

How this happens, Is that a problem with the message server or any other issue !!!

regards,