Brute Force – Cyber Attack
A brute-force attack is a method used by hackers to gain unauthorized access to a system or account by systematically trying all possible combinations of passwords or encryption keys until…
Nightly Reboot – Linux Cronjob Example
DISCLAIMER I’m not a certified financial planner/advisor nor a certified financial analyst nor an economist nor a CPA nor an accountant or a lawyer. I’m not a finance professional through…
How To Generate 4096-bit Secure ssh Key with ssh-keygen
Ssh is a secure protocol used to manage remote systems like Linux, BSD, UNIX, network devices event windows operating systems. The traffic between systems is encrypted. Ssh uses asymmetric keys…
How To Set up SSH Keys on a Linux / Unix System
I recently read that SSH keys provide a secure way of logging into a Linux and Unix-based server. How do I set up SSH keys on a Linux or Unix-based…
How to display listening ports using the netstat from the command line
If you’re troubleshooting a service that you know is running normally, the next step is to ensure it’s listening on the correct network port. The netstat command shows the services…
How to use buffers to copy and paste lines in VI/VIM
The vi and vim editors allow you to copy text from your file into temporary buffers for use in other places in the file during your current vi work session.…
Kali Linux 2022.1 Release (Visual Updates, Kali Everything ISOs, Legacy SSH)
Just announced from Kali, their new 2022.1 release is available for a dist-upgrade or a fresh install! “Today, we are pushing out the first Kali Linux release of the new…
How do I fix the GPG error “NO_PUBKEY”?
I recently added some extra repositories with the Mysterium network and received this error when I reloaded the apt package database: To fix this, I found to execute the following…
Linux Download: Top 12 Free Linux Distributions for Desktop and Servers
All the Linux distributions are either derivatives of GNU/Linux ( OS made up of Linux Kernel developed by Linus Torvalds and GNU software repository) or derived from other Linux derivatives.…