Finding failed SSH login attempts on Debian Systems, Ubuntu, Centos
The following tutorial describes how to list all invalid ssh logins.
We will do everything by executing one command!
To view invalid logins in Debian / Ubuntu systems issue the command:
1 | grep "Failed password" /var/log/auth.log |
In the Centos system
1 | grep "Failed" /var/log/secure |
We will get the results as in the screenshot.
