ubuntu

Ubuntu 18.04 — etcd — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — etcd — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 March 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6189-1 Related CVEs: CVE-2021-28235 CVE-2020-15106 CVE-2020-15112 CVE-2020-15113 CVE-2020-15114 Upstream summary: It was discovered that etcd leaked credentials when debugging was enabled. This allowed remote attackers to discover etcd authentication credentials […]

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Common Problems 117929

Ubuntu 18.04 LTS Time Drift Breaks Kerberos and TLS

🟠 High   ⏱ 5–30 min  Last verified: 3 March 2021 Affected versions: 18.04 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 & […]

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Установка и настройка сервера OpenVPN в Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Установка и настройка сервера OpenVPN в Ubuntu 20.04

Виртуальная частная сеть (VPN) позволит вам работать в незащищенных сетях, как если бы вы находились в частной сети. Она предоставляет возможность получить безопасный и защищенный доступ к сети Интернет со смартфона или…

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How to Migrate Redis Data with Master-Slave Replication on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How to Migrate Redis Data with Master-Slave Replication on Ubuntu 14.04

Redis is an in-memory, NoSQL, key-value cache and store that can also be persisted to disk. For any number of reasons, like transitioning to a more powerful server, sometimes it becomes necessary to migrate your data from one server to another. This article will show how to migrate Redis data from an Ubuntu 14.04 server to a similar server using master-slave replication.

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How To Install and Configure Postfix on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Install and Configure Postfix on Ubuntu 16.04

Postfix is a popular open-source Mail Transfer Agent (MTA) that can be used to route and deliver email on a Linux system. It is estimated that around 25% of public mail servers on the internet run Postfix. In this guide, we’ll teach you how to get up and running quickly…

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Common Problems 118523

Ubuntu 16.04 LTS – repository signature or GPG key errors block updates – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 2 March 2021 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 […]

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How To Set Up an NFS Mount on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Set Up an NFS Mount on Ubuntu 18.04

NFS, or Network File System, is a distributed file system protocol that allows you to mount remote directories on your server. This tutorial goes over how to install all the components needed to run NFS and also walks readers through two distinct use cases for the protocol.

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