🟡 Medium ⏱ 5–30 min Last verified: 20 May 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read • Source: Ubuntu Security Notice USN-6232-1 Related CVEs: CVE-2020-21365 Upstream summary: It was discovered that wkhtmltopdf was not properly enforcing the same-origin policy when processing certain HTML files. If a user or automated system using […]
Node.js ist eine JavaScript-Laufzeitumgebung für serverseitige Programmierung. Sie ermöglicht Entwicklern die Erstellung von skalierbaren Backend-Funktionen mit JavaScript, einer Sprache, die viele aus der Browser-basierten Webentwicklung bereits…
In this guide, we will be setting up VNC on a Ubuntu 16.04 server and connecting to it securely through an SSH tunnel. The VNC server we will be using is TightVNC, a fast and lightweight remote control package. This choice will ensure that our VNC connection will be smooth and stable even on slower internet connections.
🟠 High ⏱ 5–30 min Last verified: 19 May 2026 Affected versions: Ubuntu 16.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
![[Video] How To Set Up Sudo and SSH Keys on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot](https://www.progressiverobot.com/wp-content/uploads/2026/05/video-how-to-set-up-sudo-and-ssh-keys-on-ubuntu-14-04-94276-featured.png "[Video] How To Set Up Sudo and SSH Keys on Ubuntu 14.04 6")
This tutorial screencast will show you how to set up a non-root superuser account (sudo) and SSH key authentication on an Ubuntu 14.04 server. Following these steps can improve the security of your server, and is recommended for all Linux servers.
🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7035-1 Related CVEs: CVE-2016-1585 https://bugs.launchpad.net/apparmor/+bug/1597017 Upstream summary: It was discovered that the AppArmor policy compiler incorrectly generated looser restrictions than expected for rules allowing mount operations. A local attacker could […]
SSH is the primary remote administration protocol for Linux servers. A default SSH configuration leaves many attack vectors open: root login, password authentication, and broad listening options. This guide hardens SSH on Ubuntu 26.04 LTS using key-based authentication, restricted access, and fail2ban. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS SSH access […]
Python是一种灵活多样的编程语言。它的用途广泛，在脚本、自动化、数据分析、机器学习和后端开发方面都具有优势。Python于1991年首次发行，名字的灵感来源于英国喜剧团体“Monty Python”，因此Python开发团队希望让Python用起来很有趣。易于安装配置、代码风格相对简单直接、有即时的反馈和报错，这些特性让Python成为编程初学者的一个很好选择，也同样适合有经验的程序员。[Python…
🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4968-1 Related CVEs: CVE-2021-3520 Upstream summary: It was discovered that LZ4 incorrectly handled certain memory operations. If a user or automated system were tricked into uncompressing a specially- crafted LZ4 […]
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