Certbot offers a variety of ways to validate your domain, fetch certificates, and automatically configure Apache and Nginx. In this tutorial, we’ll discuss Certbot’s standalone mode and how to use it to secure other types of services.
![How To Set Up Timezone and NTP Synchronization on Ubuntu 14.04 [Quickstart] — step-by-step Linux tutorial on Progressive Robot](https://www.progressiverobot.com/wp-content/uploads/2026/05/how-to-set-up-timezone-and-ntp-synchronization-on-ubuntu-14-04-quickstart-86508-featured.png "How To Set Up Timezone and NTP Synchronization on Ubuntu 14.04 [Quickstart] 2")
Setting your server’s clock and timezone properly is essential in ensuring the healthy operation of distributed systems and maintaining accurate log timestamps. This tutorial will show you how to configure NTP time synchronization and set the timezone on an Ubuntu 14.04 server.
Munin is a helpful utility that provides a visual way to monitor a VPS. It is set up to be extremely plug and play. It can be installed very quickly through apt-get. We will be using Ubuntu 12.04 in this guide.
🟡 Medium ⏱ 10–30 min Last verified: 9 January 2023 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5658-1 Related CVEs: CVE-2022-2928 CVE-2022-2929 CVE-2021-25217 CVE-2019-6470 Upstream summary: It was discovered that DHCP incorrectly handled option reference counting. A remote attacker could possibly use this issue to cause DHCP […]
How to install and configure Elasticsearch on CentOS 8
🟠 High ⏱ 15–60 min Last verified: 9 January 2023 Affected versions: Oracle Linux 9 📖 ~4 min read • Source: ELSA advisory ELSA-2022-9601 Related CVEs: CVE-2022-21505 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
Red Hat Enterprise Linux 9 (RHEL 9, codenamed “Plow”) is the most significant release of RHEL in years, built on Linux kernel 5.14, OpenSSL 3.0, and shipped with a hardened-by-default security posture including SELinux enforcing mode, nftables as the default firewall backend, and full support for the latest POWER, ARM, and x86_64 architectures. Whether you […]
🟠 High ⏱ 5–30 min Last verified: 8 January 2023 Affected versions: Ubuntu 22.04 LTS Ubuntu 22.04 Ubuntu 22.04.4 📖 ~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 […]
🟡 Medium ⏱ 10–30 min Last verified: 8 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2013-4136 CVE-2014-1831 CVE-2015-7519 CVE-2016-10345 CVE-2017-16355 CVE-2018-12029 Upstream summary: ext/common/ServerInstanceDir.h in Phusion Passenger gem before 4.0.6 for Ruby allows local users to gain privileges or possibly change the ownership […]
🟡 Medium ⏱ 10–30 min Last verified: 8 January 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5704-1 Related CVEs: CVE-2022-42010 CVE-2022-42011 CVE-2022-42012 Upstream summary: It was discovered that DBus incorrectly handled messages with invalid type signatures. A local attacker could possibly use this issue to cause […]
