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Articles
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Linux
- What is Linux?
- New features and changes to the Debian 9 (Stretch) operating system
- New features and changes to the Debian 10 (Buster) operating system
- What's new and changes in the Debian 11 (Bullseye) operating system
- News and changes of the Debian 12 (Bookworm) operating system
- Download and install the Digital Prosperity Software Basic Package for free
- Other software
Tutorials
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Tutorials
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Basic Systems
- Install VirtualBox 5.2 on Debian 9 (stretch) host operating system
- Installing VirtualBox 6.0.x on a Debian 10 (Buster) host operating system
- Install VirtualBox 6.1.x on Debian 10 (Buster) host operating system
- How to configure VirtualBox for basic systems
- How to Build a Bootable Drive with Rufus
- Make bootable flash drives with Rufus 3.3
- Creating a bootable flash drive on Debian
- Make bootable flash drives with Rufus 4.3
- Making a bootable flash drive with the balena Etcher 1.5
- Creating a recovery flash drive using GParted Live
- Install Debian 8 (Jessie) Minimum Server
- Install Debian 9 (Stretch) Minimum Server
- Installing Debian 9 (Stretch) Minimum Server (page 2)
- Install Debian 10 (Buster) Minimum Server
- Installing Debian 10 (Buster) Minimum Server (page 2)
- Install a minimum server for Ubuntu 18.04 LTS (Bionic Beaver)
- Installing a Minimal Server for Ubuntu 18.04 LTS (Bionic Beaver) (page 2)
- Ubuntu 20.04 LTS (Focal Fossa) minimal server installation
- Installing Ubuntu 20.04 LTS (Focal Fossa) Minimal Server (Page 2)
- Debian 11 (Bullseye) minimal server installation
- Installing the Debian 11 (Bullseye) Minimal Server (page 2)
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Basic graphics systems
- How to configure VirtualBox for graphical desktop operating systems
- Installing Debian 11 (Bullseye) in UEFI mode with the KDE Plasma desktop environment and the Calamares installer
- Linux Mint 20.1 (Ulyssa) BIOS mode installation with Cinnamon desktop environment
- Ubuntu 22.04 LTS (Jammy Jellyfish) UEFI Mode Installation
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Multi-boot systems
- Dual boot: Installing Windows 7 and Debian 10 (Buster) operating systems in BIOS mode on a hard disk
- Dual Boot: Installing Windows 7 and Debian 10 (Buster) Operating Systems on a Hard Disk in BIOS Mode (Page 2)
- Dual boot: Installing Windows 11 and Ubuntu 21.10 (Impish Indri) operating systems in UEFI mode on two partitions on a hard disk
- Dual boot: Installing Windows 11 and Ubuntu 21.10 (Impish Indri) operating systems in UEFI mode on two partitions on a hard disk (page 2)
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Web hosting
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Servers
- Installing Debian 8 (Jessie) LAMP Server v1.0
- Installing Debian 9 (Stretch) LAMP Server v1.0
- Installing Debian 9 (Stretch) LAMP Server v1.0 (page 2)
- Installing Debian 10 (Buster) LAMP Server v1.0
- Installing Debian 10 (Buster) LAMP Server v1.0 (page 2)
- Installing Debian 10 (Buster) LAMP Server v1.0 (page 3)
- Debian 11 (Bullseye) LAMP server v1.0 installation
- Install v18.04 on the Ubuntu 1.0 LTS (Bionic Beaver) LAMP Server
- Install Ubuntu 20.04 LTS (Focal Fossa) LAMP Server v1.0
- Perfect server: Debian 8 (Jessie) V1.0
- Perfect Server: Debian 8 (Jessie) V1.0 (page 2)
- Perfect Server: Debian 8 (Jessie) V1.0 (page 3)
- Perfect Server: Debian 8 (Jessie) V1.0 (page 4)
- Perfect server: Debian 9 (stretch) V1.0
- Perfect server: Debian 9 (stretch) V1.0 (page 2)
- Perfect server: Debian 9 (stretch) V1.0 (page 3)
- Perfect server: Debian 9 (stretch) V1.0 (page 4)
- Perfect server: Debian 10 (Buster) V1.0
- Perfect Server: Debian 10 (Buster) V1.0 (Page 2)
- Perfect Server: Debian 10 (Buster) V1.0 (Page 3)
- Perfect server: Debian 11 (Bullseye) v1.0
- How to build and arming our ISPConfig3 server and how to secure our control panel, main services and websites with Let's Encrypt SSL
- How to build and arming our ISPConfig3 server and how to secure our control panel, main services and websites with Let's Encrypt SSL (page 2)
- How to build and arming our ISPConfig3 server and how to secure our control panel, main services and websites with Let's Encrypt SSL (page 3)
- Apache
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PHP
- How to install PHP 7.1.19 in optional mode on Debian 8 perfect server
- How to Install PHP 7.1.19 in Optional Mode on Debian 8 Perfect Server (page 2)
- How to install PHP 5.6.40 as an optional version on Debian 9 (Stretch) perfect server
- How to install PHP 5.6.40 as an optional version on a Debian 9 (Stretch) perfect server (page 2)
- How to install PHP-FPM on a Debian 8 (Jessie) LAMP server
- How to install PHP-FPM on a Debian 8 (Jessie) LAMP server (page 2)
- How to install newer PHP versions on our Debian 9 (Stretch) LAMP server in PHP-FPM mode
- How to install newer PHP versions on our Debian 9 (Stretch) LAMP server in PHP-FPM mode (page 2)
- How to install PHP 8.2 on a Debian or Ubuntu server and set it as an optional PHP version in the ISPConfig control panel
- How to install PHP 8 on your Debian or Ubuntu server
- How to manually change the PHP version of a website or web application running in a PHP-FPM pool?
- Database
- Filesystem
- Networking
- Dns Settings
- Correspondence
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ISPConfig
- Creating the first Web account in the ISPConfig server configuration
- Creating Your First Web Account in ISPConfig Server Configuration (page 2)
- Update the ISPConfig 3 control panel
- Upgrade ISPConfig 3 control panel to 3.2
- Disable prefixing of user names in the ISPConfig3 control panel
- How to configure custom PHP versions on our ISPConfig server
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Security
- How to enable Fail2Ban program filters in the ISPConfig server environment
- How to unblock our blocked IP address if we are banned from any of our server services
- How to handle our HTTP authentication passwords in the htpasswd file using the htpasswd command
- How to secure our ISPConfig3 control panel and key services with free Let's Encrypt SSL
- Install Let's Encrypt Free SSL on an ISPConfig3 server environment
- Enhance SSH protection with additional Fail2Ban filter patterns on Debian 8 (Jessie)
- How to keep unwanted robots away from our server websites
- Basic port scanning - Or how to check the security of our Linux server against unauthorized intruders (page 2)
- Basic port scanning - Or how to check the security of our Linux server against unauthorized intruders
- How can we change the default tcp port 22 of our SSH server on our Debian or Ubuntu Linux server for better security?
- How to defend against attacks resulting in large volumes of 404 or other 4xx HTTP error codes with Fail2Ban
- How to protect our server from attacks on our databases with "Access denied for user root@ip address (using password: YES / NO)" using Fail2Ban
- How to configure the HSTS (HTTP Strict Transport Security) header for our web pages running on our Apache web server
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Operation of websites
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CMS systems
- Installing and setting up Drupal 8 CMS system
- Upgrading your Drupal 8 base system easily
- Upgrading the Drupal base system to 8.8
- Installing and setting up Drupal 9 CMS system
- Upgrading your Drupal 9 base system in two ways
- Installing WordPress 5.2 CMS on an ISPConfig server environment
- Installing WordPress 5.2 CMS on ISPConfig Server Environment (page 2)
- Maintenance, troubleshooting
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CMS systems
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Other accessories
- Installing Composer PHP package manager
- How to extend phpMyAdmin sessions
- Rotate and compress log files with Logrotate
- Rotate and compress log files with Logrotate (page 2)
- How to install Matomo (formerly Piwik) web analytics software on our Apache server
- How to install Matomo (formerly Piwik) web analytics software on our Apache server (page 2)
- How to install Matomo (formerly Piwik) web analytics software on our Apache server (page 3)
- How to install Matomo (formerly Piwik) web analytics software on our Apache server (page 4)
- How to install Matomo (formerly Piwik) web analytics software on our Apache server (page 5)
- How to install Matomo (formerly Piwik) web analytics software on our Apache server (page 6)
- How to install Matomo (formerly Piwik) web analytics software on our Apache server (page 7)
- How to install Matomo (formerly Piwik) web analytics software on our Apache server (page 8)
- Server monitoring with Munin on Debian 9 (Stretch) and Debian 10 (Buster)
- Server monitoring with Munin on Debian 9 (Stretch) and Debian 10 (Buster) (page 2)
- How to upgrade our Matomo (formerly Piwik) web analytics system to version 4.x.
- How to upgrade our Matomo (formerly Piwik) web analytics system to version 4.x (page 2)
- How to easily install from the backports repository or upgrade your manually installed phpMyAdmin web database management system on Debian 10 (Buster) servers
- How to set the default website on our ISPConfig server so that the Apache2 Debian Default page is not loaded when accessing the server's IP address or full hostname
- Server monitoring with Monit on Debian and Ubuntu systems
- Server monitoring with Monit on Debian and Ubuntu systems (page 2)
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Servers
- Shell, SSH, terminal tips, tricks
- System management
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Filesystem
- How to use remote NFS file sharing on your Debian computer as a local directory
- How to share directories between Linux and Windows
- How to share directories between Linux and Windows (page 2)
- How to share directories between Linux and Windows (page 3)
- How to access SSH (SFTP) -based file systems on remote Linux servers from a Windows computer
- How to access SSH file systems on remote servers from linux
- How to use UUID unique identifiers to consistently mount partitions
- How to create an SFTP user without shell access on your Linux system
- File management
- Package Management
- Networking
- Security
- System recovery
- VirtualBox
- Hardware
- Programming
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Graphical user interface
- General
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Desktop Applications
- How to securely store and keep your passwords in sync on your computers and mobile devices with KeePass Password Manager
- How to securely store and keep your passwords in sync on your computers and mobile devices with KeePass Password Manager (page 2)
- How to control your remote computer with Chrome Remote Desktop
- Convenient use of terminal windows with Asbrú Connection Manager
- Convenient use of terminal windows with Asbrú Connection Manager (page 2)
- Sound management
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Updates
- How to upgrade your home computer from Debian 8 (Jessie) to Debian 9 (Stretch)
- Migrate network device names to the udev standard of Debian 9 (Stretch)
- How to upgrade your perfect Debian9 (Stretch) based server to Debian 10 (Buster)
- How to upgrade your perfect Debian9 (Stretch) server to Debian 10 (Buster) (page 2)
- How to upgrade your perfect Debian9 (Stretch) server to Debian 10 (Buster) (page 3)
- How to upgrade our perfect server based on Debian 10 (Buster) to Debian 11 (Bullseye)
- How to upgrade our perfect server based on Debian 10 (Buster) to Debian 11 (Bullseye) (page 2)
- How to upgrade our perfect server based on Debian 10 (Buster) to Debian 11 (Bullseye) (page 3)
- Tips, tricks, useful examples, quick solutions
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Troubleshooting
- What to do if the Composer PHP package manager is running very slowly, stumbling while updating projects
- What to do if the Debian 8 (Jessie) APT package manager throws 404 (not found) errors when upgrading
- What should I do if I get an error when changing the label of our external NTFS HDD?
- Fixes PAC Manager 4.5 connection failure on Debian 9
- How to fix errors in the Security Policy for ImageMagick / Imagick Conversion Systems
- How to automatically clean PHP session files left in the tmp directories of web accounts in an ISPConfig server environment
- What if our Sury.org repository is not updated due to a GPG signing error on our Debian server?
- How to deal with "Possible attack detected. This action has been logged." error message in our ISPConfig control panel
- How to fix a locale error for Perl-based programs to work properly
- How to fix "AH00124: Request exceeded the limit of 10 internal redirects due to probable configuration error." types of Apache errors?
- How to handle "WARNING: POSSIBLE DNS SPOOFING DETECTED!" and "REMOTE HOST IDENTIFICATION HAS CHANGED!" error at ssh login time?
- How to troubleshoot a "Not authorized to perform operation" error message when automatically mounting flash drives and other external USB storage devices
- How can we manually unmask services that are masked (service is masked) that we cannot unmask with the unmask option of the systemctl command?
- How to fix "dovecot: master: Error: socket() failed: Address family not supported by protocol" errors
- How to fix "554 5.7.1 Service unavailable; Client host blocked using zen.spamhaus.org; Error: open resolver;" from our server delivery of bounced letters with an error message?
- How To Fix "This PC can't run Windows 11" Error When You Install Windows 11 On VirtualBox
- What to do if your VirtualBox does not start the installation ISO image files in EFI mode
- What to do if you update the "This must be accepted explicitly before updates for this repository can be applied. See apt-secure (8) manpage for details." do we get an error message?
- What should we do if our Matomo web analytics system generates "AH01630: client denied by server configuration" type Apache errors that causes Fail2Ban to block our IP address?
- What to do if you get a "public key not available" (NO_PUBKEY) error message when upgrading the repository on your older Debian system
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