Linux

How To Configure Remote Access for MongoDB on Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

How To Configure Remote Access for MongoDB on Ubuntu 20.04

This tutorial walks you through configuring a MongoDB installation to securely allow access from a trusted remote computer. This will involve updating your firewall rules to provide the remote server access to MongoDB’s default port and changing Mongo’s configuration file to update its IP binding setting.

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Common Problems 121509

Debian 9 interrupted dpkg Requires Manual Configuration

🟠 High   ⏱ 5–30 min  Last verified: 16 July 2020 Affected versions: Debian 9 📖 ~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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Common Problems 115058

RHEL 8 nftables and firewalld Rules Conflict After Manual Changes

🟡 Medium   ⏱ 5–30 min  Last verified: 16 July 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 […]

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How to Configure GPG Key Management on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure GPG Key Management on Debian 9

Introduction Deploying configure gpg key management on debian 9 on a Debian 9 Stretch 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 Before you […]

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Initial Server Setup with Debian 7 — step-by-step Linux tutorial on Progressive Robot

Initial Server Setup with Debian 7

This tutorial covers how to login with root, how to change the root password, how to create a new user, and how to give the new user root privileges. It’s written for Debian 7.

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How to Set Up SSH Keys on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How to Set Up SSH Keys on Ubuntu 18.04

SSH-key-based authentication provides a more secure alternative to password-based authentication. In this tutorial we’ll learn how to set up SSH key-based authentication on an Ubuntu 18.04 installation.

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Ubuntu 20.04 — blueman — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — blueman — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 July 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4605-2 Related CVEs: https://launchpad.net/bugs/1897287 CVE-2020-15238 Upstream summary: Vaisha Bernard discovered that blueman did not properly sanitize input on the d-bus interface to blueman-mechanism. A local attacker could possibly use this […]

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