How to Install and Configure Postfix Mail Server on Ubuntu 24.04
Postfix is a popular, high-performance Mail Transfer Agent (MTA) that routes and delivers email. This guide installs and configures Postfix...
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How to Install and Configure Dovecot IMAP Server on Ubuntu 24.04
Dovecot is a secure, open-source IMAP and POP3 server that works alongside Postfix to deliver email to mail clients. This...
How to Configure DKIM, SPF and DMARC on Ubuntu 24.04
DKIM, SPF, and DMARC are email authentication standards that prevent spoofing and improve email deliverability. This guide configures all three...
How to Install Zabbix 7 on Ubuntu 24.04
Zabbix 7 is an enterprise-grade open-source monitoring solution for networks, servers, and cloud services. This guide installs Zabbix Server 7.0...
How to Install Prometheus and Grafana on Ubuntu 24.04
Prometheus is a powerful time-series monitoring system and Grafana is the leading visualisation dashboard. Together they form the most popular...
How to Set Up the ELK Stack on Ubuntu 24.04
The ELK Stack (Elasticsearch, Logstash, Kibana) is the leading open-source log management and analytics platform. This guide installs ELK Stack...
How to Harden SSH on Ubuntu 24.04
SSH is the primary remote access method for Linux servers and is a common target for brute-force attacks. This guide...
How to Set Up Two-Factor Authentication (2FA) for SSH on Ubuntu 24.04
Two-Factor Authentication (2FA) adds an extra layer of security to SSH by requiring a time-based one-time password (TOTP) in addition...
How to Set Up Automatic Login Banners and SSH Warnings on Ubuntu 24.04
Login banners warn users of authorised use policies and can have legal implications for intruders. This guide configures pre-login SSH...
How to Install GitLab CE on Ubuntu 24.04
GitLab Community Edition is a full-featured DevOps platform that combines Git repository management, CI/CD pipelines, issue tracking, and a container...
How to Set Up a Git Server with Gitea on Ubuntu 24.04
Gitea is a lightweight, self-hosted Git service written in Go. It offers a GitHub-like interface with a tiny resource footprint...
How to Register a GitHub Actions Self-Hosted Runner on Ubuntu 24.04
GitHub Actions self-hosted runners let you run CI/CD workflows on your own infrastructure, giving you more control over hardware, software,...
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