Introduction.
The information regarding your battery status and ACPI is stored in /proc and /sys file system. The easiest way to read this information is using the various commands line option tools as well as GUI tool on Linux operating system.
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This guide covers how to secure a local Linux login using the U2F feature on YubiKeys and Security Keys. This does not work with remote logins via SSH or other methods. The commands in the guide are for an Ubuntu (or Ubuntu based) system, but the instructions can be adapted for any distribution of Linux.
Continue reading “How to configure local two-factor authentication with U2F on Ubuntu 19.10”
Securing your Linux server is important to protect your data, intellectual property, and time, from the hands of crackers (hackers). The system administrator is responsible for security of the Linux box.
OpenVPN is a free and open source VPN solution. VPN solution. As a result VPN allow to secure your data communications. It implements OSI layer 2 or 3 secure network extension using the SSL/TLS protocol. A VPN allows your yo connect securely to an insecure public network such as WiFi network at the airport or hotel. Almost companies also use VPN to access corporate or enterprise or home server resources. You can bypasss geo-blocked site and increase your privacy or safety online.
Continue reading “How to install and configure OpenVPN on Debian 10”
Proxmox Virtual Environment (PVE) is an open source server virtualization management solution based on QEMU/KVM and LXC. You can manage virtual machines, containers, highly available clusters, storage and networks with an integrated, easy-to-use web interface or via CLI.
Continue reading “Proxmox upgrade from 5.x to 6.x (Debian stretch to buster)”
Introduction
CentOS is a Linux distribution that provides a free, enterprise-class, community-supported computing platform functionally compatible with its upstream source, Red Hat Enterprise Linux (RHEL).
The Vesta Control Panel is a free, open source control panel with website, email, database, and DNS functionalities. In this tutorial you will upgrade the control panel PHP 5.6 to PHP 7.3 on CentOS server.
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In this tutorial we will be configuring Cloudflare real ip under nginx server. As a result Cloudflare service will helps protect and speed up your web site project. In a standard shared hosting plan, visitors access the site directly.
The mcrypt extension is included in PHP 5.4 through PHP 7.1. It was removed from PHP 7.2 and moved to an unofficial PECL extension because the mcrypt library is no longer maintained.
Continue reading “Install mcrypt for PHP 7.2 / 7.3 on DirectAdmin server”
This tutorial explains the procedure to upgrade Debian 7 (wheezy) to Debian 10 (buster) in a few simple steps.
Continue reading “How to upgrade Debian 7 (wheezy) to 10 (buster) safely”
You can convert a .ppk file in Ubuntu with installing putty-tools. So
sudo apt-get install putty-tools
Then youn can convert the .ppk file with puttygen to OpenSSH’s format like so:
puttygen <the_key.ppk> -O private-openssh -o <new_openssh_key>.key
