VMware ESX 3.0 cannot monitored via SSH

VMware ESX 3.0 cannot monitored via SSH

Hi App-Support!

If i what to add a new monitor over ssh, an VMware ESX 3.0, i cannot connect to this Server.
After i click on "Add Monitor" AppManager never brings back a new status window.
With "putty" the connect with same user/pw works fine.

I look in the messages log on the server and find this entry:
sshd[29791]: Did not receive identification string from

Is it an ESX Firewall Problem? Or SSHDeamon config Problem?

Application Monitor is up to date with Build 7100 SP1.

Kind regards,
Alexander