Disconnect OpenSSH user sessions after a certain period of inactivity with the systemd-logind service.

Setting up and maintaining an email service in the data center doesn't have to be a nightmare. The iRedMail open source solution lets you deploy a full-featured email server on a number of platforms in a matter of minutes.

We look at the Border Gateway Protocol, how it routes packets through the Internet, its weaknesses, and some hardening strategies.

Explore low-cost parallel computing.

The OSSEC free intrusion detection and host-based intrusion prevention system detects and fixes security problems in real time at the operating system level with functions such as log analysis, file integrity checks, Windows registry monitoring, and rootkit detection. It can be deployed virtually anywhere and supports the Linux, Windows, and macOS platforms.

Targeted attacks such as distributed denial of service, with thousands of computers attacking your servers until one of them caves in, cannot be prevented, but they can be effectively mitigated.

Security Onion bundles numerous individual Linux tools that help you monitor networks or fend off attacks to create a standardized platform for securing IT environments.

The AI skillset is currently limited, so you don't yet have to worry about AI replacing programmers. We look at the capabilities of AI scripting with free large language models and where it works best.

Kubescape checks Kubernetes container setups for security and compliance issues, making life easier for administrators.

RustDesk supports self-hosted cross-platform remote support and maintenance. The client and optional basic server are open source and available free of charge.