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Administration

• Reverse SSH – How to setup a temporary reverse SSH to allow remote access.

Email

• Postfix SMTP – How to setup email relay
• Roundcube Webmail – How to troubleshoot Roundcube
• Mailman – How to setup a mailing list system
• OpenEMM – How to setup email marketing system with OpenEMM

File

• Samba – setup Windows 10 computer to access Samba

Security

• fail2ban – How to ban suspicious IP address which are failure to access
• fail2ban – How to unban suspicious IP address
• jailkit – How to setup a chroot jail on Linux

Virtualisation

• KVM – How to manage a KVM virtual machine
• KVM – How to build a KVM virtual machine

Web

• Nginx HTTP – How to setup HTTP Redirection with Nginx
• Nginx HTTP – How to setup PHP with Nginx for Drupal
• Nginx HTTP – How to setup PHP with Nginx for WordPress
• Nginx HTTP – How to setup HongKongPost SSL Certificate with Nginx
• Nginx HTTP – How to setup free LetsEncrypt SSL certificate for Nginx
• Squid Proxy – How to setup Squid HTTP Proxy on Ubuntu 22.04 LTS
• ISPConfig3 – How to setup Nginx, Postfix, Dovecot with ISPConfig3