VMware

Root account continuously locking out

Fairly new to vmware and ESXi. I allowed port forwarding for a day or two so I could access my vsphere client from outside my LAN to do some things at work because I have a slow week. It kept locking out after every hour or so, which I would then have to reboot it in order to log back in. After checking the logs, there were 500 something failed attempts to log in. So the lockouts were due to brute force attacks on the login credentials I determined. However, after I disabled the port forwarding and rebooted my router, it continues to lockout. Any thoughts on this?



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5 Comments

  1. > I allowed port forwarding for a day or two so I could access my vsphere client from outside my LAN

    1. Don’t do that.
    2. Either you have ports open somewhere else -or- something got owned on your network.
    3. Trace the IP the connection requests are coming from.

  2. Any time I have experienced that, it was due to a monitoring software having the wrong root credentials. It tried to poll five minutes before every hour and it locked it out. It didn’t last forever.

    Do you have Dell OpenManage running?

  3. You can stop it from locking by removing the even_deny_root keyword in the system-auth conf file inside /etc/pam.d, IIRC. But it’s simpler to stop whatever monitoring script is trying to login under SSH with an old password.

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