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Systemctl lists all failed Linux units / services

Is there a command to print a list of all devices or services that fail using systemd on Linux? Can you give me the systemctl command to list all failing services on Linux? This short tutorial explains how to find/list…

Winning Cyber Threat Intelligence: Taking More Personal View

In this last article in our trilogy, we look at how a Cyber Threat Analyst (CTI) and related programs can provide insight into the physical and cyber threats your organization faces. The value of these ideas is reflected in the…

Even greater risk comes with great convenience

IoT devices are becoming increasingly popular – almost all of them can now be connected to the Internet. Some of them may be at your home or business and you may not even notice them. Smart lights that synchronize with…

How to Edit Your Videos With Youtube Video Editor

There are many video editors, and we already have a large list for Windows, MacOS and Linux. However, if you want to do a simple operation, they can be exaggerated. When you upload a video to YouTube, why not use…

How to limit SSH (TCP port 22) connections to Ubuntu with ufw

How to restrict ssh connection attempts using a UFW (Uncomplicated Firewall) on a Ubuntu or Debian Linux server? UFW stands for simple firewall. This is the default firewall on Ubuntu. However, you can also install ufw on other Linux distributions.…

Bash Check that Shell is interactive or not under Linux / Unix Oses

How do you check in GNU/Bash if a shell interacts when writing shell scripts or not? The bash shell is considered an interactive shell when it reads and writes data from the user’s terminal. Most startup scripts control a shell…

How to Set OpenDKIM to CentOS 8 / RHEL 8 Mail Server

Previously I showed you how to set up SPF and DKIM on CentOS/RHEL mail server. Two common pieces of software that can do DKIM signing and verification on Linux are OpenDKIM and Amavis. In that tutorial I used Amavis, because…

Can you please explain encryption to me?

Van: Thomas, KevinSent: 24. August 2019 10:43: Malik, subject Javvad: Encryption Jav I am updating the presentation package for this month’s management meeting. Could you send me a brief description of the encryption so that the SLT can better understand…

Samsung smartphone users at risk from critical security bugs. Patch right now

Samsung has released a security update for its popular Android smartphones with a crucial solution to a security vulnerability that affects all devices sold by the manufacturer since 2014. On the Android security update page, Samsung researcher Mateusz Jurczyk from…

All of your VMDR questions, answered

Last week Qualys launched its latest VMDR solution, Vulnerability Management Detection and Response, which combines the visualization, management, detection and response capabilities of the world’s hybrid computing environments in a single application. It was presented to the world in an…