Networking

Common Problems 116098

ufw logging floods journal and impacts I/O

🟡 Medium   ⏱ 5–30 min  Last verified: 29 May 2026 Affected versions: Ubuntu 26.04 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 115971

Ubuntu 26.04 LTS – netplan apply fails and network does not come up – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 29 May 2026 Affected versions: Ubuntu 26.04 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 Set Up WireGuard VPN on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Set Up WireGuard VPN on FreeBSD 15

Introduction Deploying set up wireguard vpn on a FreeBSD 15 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base + ports […]

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How to Install and Configure Samba File Server on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Install and Configure Samba File Server on FreeBSD 15

Introduction FreeBSD 15 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install and configure samba file server on FreeBSD 15 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux distribution. […]

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How to Scan for Vulnerabilities with OpenVAS on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Scan for Vulnerabilities with OpenVAS on Oracle Linux 10

Introduction How to Scan for Vulnerabilities with OpenVAS on Oracle Linux 10 on Oracle Linux 10 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting […]

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How to Configure VNET Jails on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Configure VNET Jails on FreeBSD 15

Introduction This guide explains how to Configure VNET Jails on FreeBSD 15 on FreeBSD 15. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained privilege […]

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How to Configure FreeBSD Jail Networking on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Configure FreeBSD Jail Networking on FreeBSD 15

Introduction This guide explains how to Configure FreeBSD Jail Networking on FreeBSD 15 on FreeBSD 15. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained […]

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How to Install OpenJDK 17 on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Install OpenJDK 17 on FreeBSD 15

Introduction Deploying install openjdk 17 on a FreeBSD 15 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base + ports approach […]

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How to Set Up PostgreSQL Streaming Replication on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Set Up PostgreSQL Streaming Replication on FreeBSD 15

Introduction Deploying set up postgresql streaming replication on a FreeBSD 15 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base + […]

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Common Problems 115985

Intermittent DNS Resolution with systemd-resolved

🟡 Medium   ⏱ 5–30 min  Last verified: 28 May 2026 📖 ~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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