Networking

How to Set Up FTP Server with vsftpd on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up FTP Server with vsftpd on Debian 10

Introduction How to Set Up FTP Server with vsftpd on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from […]

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How to Configure IPv6 on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure IPv6 on Windows Server 2012 R2

How to Configure IPv6 on Windows Server 2012 R2 IPv6 is the successor to IPv4, offering a vastly larger address space (128-bit addresses versus IPv4’s 32-bit), improved routing efficiency, mandatory IPsec support, and built-in autoconfiguration capabilities. Windows Server 2012 R2 has first-class support for IPv6 and is actually designed to prefer IPv6 over IPv4 by […]

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Common Problems 118539

Ubuntu 16.04 LTS SSSD Cache Causes Domain Login Failures

🟠 High   ⏱ 5–30 min  Last verified: 16 March 2020 Affected versions: 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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Common Problems 118089

Ubuntu 18.04 LTS Fail2ban Bans Legitimate Admin IPs

🟡 Medium   ⏱ 5–30 min  Last verified: 16 March 2020 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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How to Install and Configure Rclone on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install and Configure Rclone on Debian 10

Introduction Deploying install and configure rclone 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 Ensure Debian […]

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How to Configure IPsec for Server-to-Server Encryption on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure IPsec for Server-to-Server Encryption on Windows Server 2012 R2

How to Configure IPsec for Server-to-Server Encryption on Windows Server 2012 R2 Internet Protocol Security (IPsec) provides authentication and encryption at the IP layer, ensuring that traffic between servers cannot be intercepted or tampered with even if an attacker has gained access to the network segment. On Windows Server 2012 R2, IPsec is configured through […]

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How to Configure LDAP on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure LDAP on Windows Server 2016

How to Configure Windows Server 2016 LDAP Lightweight Directory Access Protocol (LDAP) is the standard protocol used to query and modify entries in Active Directory on Windows Server 2016. Applications, scripts, and management tools communicate with Active Directory over LDAP on port 389 (unencrypted or with STARTTLS) and LDAPS on port 636 (LDAP over SSL/TLS). […]

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Common Problems 113058

Windows Server 2016 – Kernel nonpaged pool leak from third-party driver – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 15 March 2020 Affected versions: Windows Server 2016 📖 ~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 Two-Factor Authentication with Google Authenticator on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up Two-Factor Authentication with Google Authenticator on Debian 10

Introduction How to Set Up Two-Factor Authentication with Google Authenticator on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ […]

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How to Set Up a LAMP Stack on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up a LAMP Stack on RHEL 8

A LAMP stack — Linux, Apache, MariaDB, and PHP — is one of the most widely deployed web server configurations in enterprise environments. RHEL 8 ships with the tools needed to install and configure each component using dnf and its module system. This tutorial walks you through installing and securing a fully functional LAMP stack […]

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