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On the DVD

The latest Ubuntu Server release, Hirsute Hippo, offers improvements to the Ubuntu Server Live Installer, with enhancements to automation and stability and the ability to convert Debian Installer preseed scripts into Live Installer artifacts with the autoinstall-generator snap.

Welcome

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A new trajectory for system administrators: Security and documentation

Go-To Tools

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If you like ASCII-based monitoring tools, take a look at three new tools – Zenith, Bpytop, and Bottom.

Return to Sender

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Tune the iptables configuration for Docker by establishing your own forwarding rules.

Shadow Boxing

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Malicious attackers are trying to conquer your AWS castle in the cloud. To mount a strong defense, you'll need a deeper understanding of privilege escalation and shadow admin permissions.

Tech News

Principled

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CFEngine 3 comes with a promise of more efficient configuration management and strict compliance with policies; however, it faces some tough competition.

The Easiest Way

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The powerful Ansible automator comes without airs and graces, does without complex syntax, self-documents, and has no need to hide its light compared with Puppet and other configuration management tools.

Turboboost

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HTTP/2 introduced multiplexing, resulting in superior bandwidth utilization over HTTP/1.1, and HTTP/3 solves the problem of transmission delays from packet loss by replacing TCP with QUIC.

The Postman Cometh

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Mailman 3.0 is a new major version, released 15 years after version 2.0. We put the new version through its paces and explain the installation procedure and new features.

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