Monday, August 09, 2021

ssh authlog: Failed none for invalid user

Hello,

I was hoping somebody could set me straight here. On one of my machines I have a number of entries in my /var/log/authlog file that look like this:

    Failed none for invalid user admin from 14.239.50.255 port 51796

The machine has been being hammered with SSH bruteforce attempts and I noticed that "Failed none" entry popping up frequently.

What exactly does "Failed none" mean here in this in this context?

Any insight would be greatly appreciated as my Google-fu has failed me in my search for an answer.

Regards,

Jordan

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