Установка, запуск и подключение к Jupyter Notebook на удаленном сервере
Автор выбрал Apache Software Foundation для получения пожертвования в размере $100 в рамках программы Write for DOnations. [Jupyter…
Ubuntu 20.04 — fail2ban — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 16 December 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5232-1 Related CVEs: CVE-2021-32749 Upstream summary: Jakub Żoczek discovered that certain Fail2ban actions handled whois responses in an insecure way. If Fail2ban was configured to use certain mail actions like […]
![How To Install Composer on Ubuntu 20.04 [Quickstart] — step-by-step Linux tutorial on Progressive Robot](https://www.progressiverobot.com/wp-content/uploads/2026/05/how-to-install-composer-on-ubuntu-20-04-quickstart-80552-featured.png "How To Install Composer on Ubuntu 20.04 [Quickstart] 3")
How To Install Composer on Ubuntu 20.04 [Quickstart]
In this quickstart guide, we’ll install Composer on an Ubuntu 20.04 server.
How To Back Up, Import, and Migrate Your Apache Kafka Data on Ubuntu 18.04
Backing up Apache Kafka data is an important practice to prevent unintended data loss. This tutorial will walk you through backing up, importing, and migrating your Kafka data on single and multiple Ubuntu 18.04 servers.
Ubuntu 16.04 — python-bleach — multiple vulnerabilities (5 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 15 December 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-8077-1 Related CVEs: CVE-2020-6816 CVE-2021-23980 CVE-2018-7753 CVE-2020-6802 CVE-2020-6817 Upstream summary: It was discovered that Bleach did not properly sanitize URI attributes containing character entities. An attacker could possibly use this […]
How to Set Up a Jekyll Development Site on Ubuntu 16.04
Jekyll is a static-site generator that provides some of the benefits of a Content Management System (CMS) while avoiding the performance and security issues introduced by such database-driven sites. In this tutorial, we will install a Jekyll 3.7.3 development site on Ubuntu 16.04. In later tutorials, we’ll explore the content generated here, publish a static site to the same server, and eventually deploy to a production location.
Cómo instalar Nginx en Ubuntu 20.04
Nginx es uno de los servidores web más populares del mundo y aloja algunos de los sitios más grandes y con mayor tráfico en Internet. Es una opción ligera que se puede utilizar como servidor web o proxy inverso. En esta guía, explicaremos cómo…
Ubuntu 14.04 LTS Backup Jobs Fail from Expired SSH Host Keys
🟡 Medium ⏱ 5–30 min Last verified: 12 December 2021 Affected versions: 14.04 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 & […]
Ubuntu 16.04 LTS – UFW blocks SSH access unexpectedly
🟠 High ⏱ 5–30 min Last verified: 12 December 2021 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~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 […]
Ubuntu 18.04 — flask-security — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 12 December 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-6792-1 Related CVEs: CVE-2021-23385 Upstream summary: Naom Moshe discovered that Flask-Security incorrectly validated URLs. An attacker could use this issue to redirect users to arbitrary URLs. Table of contents Symptom […]
