ESX Server "Did not receive identification string from INSIGHTMGR"

[Ronny-]

Hi there,

i've several ESX Servers. On each server i add a user called hpsim. That user is configured on my HP Insight Manager for my ESX Servers.

now.. from time to time i see the following log entry on my ESX Serveri n the Logfile:
/var/log/messages


Mar 17 11:03:12 ESXSERVER sshd[30924]: Connection from <> port 1482
Mar 17 11:03:12 ESXSERVER sshd[30924]: Did not receive identification string from <>
Mar 17 11:03:12 ESXSERVER sshd[30925]: Connection from <> port 1483
Mar 17 11:03:12 ESXSERVER sshd[30927]: Connection from <> port 1488
Mar 17 11:03:12 ESXSERVER sshd[30927]: Accepted password for hpsim from <> port 1488 ssh2
Mar 17 11:03:12 ESXSERVER sshd(pam_unix)[30929]: session opened for user hpsim by (uid=0)
Mar 17 11:03:13 ESXSERVER sshd[30929]: Received disconnect from <>: 11: The user disconnected th e application
Mar 17 11:03:13 ESXSERVER sshd(pam_unix)[30929]: session closed for user hpsim
Mar 17 11:03:52 ESXSERVER ntpd[2078]: time reset -0.194500 s
Mar 17 11:03:52 ESXSERVER ntpd[2078]: synchronisation lost



What does that mean? No identification string?

regards
ronny