IT, Cloud & DevOps Blog

How to Configure Edge Transport Server for Email on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Edge Transport Server for Email on Windows Server 2016

Introduction Windows Server 2016 includes an optional Edge Transport server role as part of the Exchange Server infrastructure. An Edge Transport server sits in the perimeter network (DMZ), handling all inbound and outbound Internet email to shield internal Exchange servers from direct Internet exposure. It performs anti-spam filtering, recipient validation, connection filtering, and policy enforcement […]

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Oracle Linux 8 — sqlite — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — sqlite — vulnerability — patch and remediation guide (ELSA-2022-7108)

🟡 Medium   ⏱ 10–30 min  Last verified: 20 August 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-7108 Related CVEs: CVE-2020-35525 CVE-2020-35527 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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How to Set Up SonarQube Code Analysis on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up SonarQube Code Analysis on Debian 10

Introduction Deploying set up sonarqube code analysis on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You […]

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Oracle Linux 8 — gnutls — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — gnutls — vulnerability — patch and remediation guide (ELSA-2020-2637)

🟠 High   ⏱ 15–60 min  Last verified: 20 August 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-2637 Related CVEs: CVE-2020-13777 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How to Authenticate Users to a SSH Server Using Monkeysphere on an Ubuntu VPS — step-by-step Linux tutorial on Progressive Robot

How to Authenticate Users to a SSH Server Using Monkeysphere on an Ubuntu VPS

The authorized_keys file on an SSH server can become difficult to manage with key changes and a large amount of entries. It can be hard to know which credentials are valid and which actual person each key is associated with. The Monkeysphere system allows you to configure authentication to an SSH server in plain English by utilizing GPG keys. This leads to a more manageable system and allows you to create policies for users, not keys.

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