May 11, 2024, 1:17 a.m. | Programmer Raja

DEV Community

As the sun set on a typical Saturday evening, I found myself engrossed in a blog titled "Visualizing Malicious IP Addresses." The author shared clever ways to detect unauthorized attempts to access virtual machines via SSH, using commands like:

$ journalctl --since "-1d" -u sshd | grep "Failed password" | wc -l
$ journalctl --since "-1d" -u sshd | grep "Failed publickey" | wc -l

Curious, I decided to try these commands on our own VM. To my …

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