Postfix is a mail transfer agent (MTA), an application used to send and receive email. It can be configured so that it can be used to send emails by local application only. In this tutorial, you’ll install and configure Postfix as a send-only SMTP server. You’ll also request free TLS certificates from Let’s Encrypt for your domain and encrypt the outbound emails using them.
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory openSUSE-SU-2020:1676-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-25219 CVE-2020-26154 CVE-2012-4504 Upstream summary: url::recvline in url.cpp in libproxy 0.4.x through 0.4.15 allows a remote HTTP server to trigger uncontrolled recursion via a response […]
Clustering adds high availability to your database at the hardware level by distributing changes to different servers. In the event that one of the instances fails, others are quickly available to continue serving…
🟡 Medium ⏱ 5–30 min Last verified: 12 September 2020 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 & […]
🟡 Medium ⏱ 5–30 min Last verified: 12 September 2020 📖 ~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 & Cross-Refs References & Further […]
Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up set up cron jobs and scheduled tasks on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each […]
This guide will walk you through the process of configuring a remote MySQL database server that your website or application can connect to. It uses WordPress as a working example of something that can connect to the MySQL backend remotely, but the technique is widely applicable to any application backed by MySQL.
R é uma linguagem de programação de código aberto e é amplamente usado para realizar análise de dados e o computação estatística. É amparado pela Fundação R para computação estatística, além de ser uma linguagem cada vez mais popular e extensível com uma comunidade ativa. O R…
🟡 Medium ⏱ 10–30 min Last verified: 12 September 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4470-1 Related CVEs: CVE-2017-6318 CVE-2020-12861 CVE-2020-12862 CVE-2020-12863 CVE-2020-12864 CVE-2020-12865 CVE-2020-12866 CVE-2020-12867 Upstream summary: Kritphong Mongkhonvanit discovered that sane-backends incorrectly handled certain packets. A remote attacker could possibly use this issue […]
Database monitoring is the continuous process of systematically tracking various metrics that show how the database is performing. In this tutorial, you’ll import database metrics, generated by the Redis INFO command, into Elasticsearch via Logstash. The imported data can later be analyzed and visualized in Kibana. By the end of the tutorial, you’ll have an automated system pulling in Redis statistics for later analysis.
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