Networking

Common Problems 118446

Ubuntu 16.04 LTS – interface stays down after boot

🟠 High   ⏱ 5–30 min  Last verified: 23 October 2021 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~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 […]

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How to Set Up iocage Jail Storage on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Set Up iocage Jail Storage on FreeBSD 13

Introduction How to Set Up iocage Jail Storage on FreeBSD 13 is a core administration task for any FreeBSD 13 server operator. FreeBSD 13 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for […]

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Common Problems 112417

Windows Server 2019 – NIC RSS and VMQ driver mismatch causes packet loss – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 23 October 2021 Affected versions: Windows Server 2019 📖 ~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 Configure Software Load Balancer with SDN on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Software Load Balancer with SDN on Windows Server 2016

How to Configure Windows Server 2016 Software Load Balancer Software Load Balancer (SLB) is a core component of the Software Defined Networking (SDN) stack in Windows Server 2016 Datacenter edition. It distributes network traffic across multiple virtual machines or services using the same load balancing algorithms and capabilities as hardware load balancers, but implemented entirely […]

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How to Configure Prometheus AlertManager on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure Prometheus AlertManager on FreeBSD 13

Introduction FreeBSD 13 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up configure prometheus alertmanager on freebsd 13 on FreeBSD 13 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 Set Up SSH Key Authentication on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Set Up SSH Key Authentication on FreeBSD 13

Introduction Deploying set up ssh key authentication on freebsd 13 on a FreeBSD 13 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 […]

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Common Problems 114951

RHEL 8 chronyd Time Drift Causing Kerberos and TLS Failures

🟡 Medium   ⏱ 5–30 min  Last verified: 21 October 2021 📖 ~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 Suricata IDS on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure Suricata IDS on FreeBSD 13

Introduction FreeBSD 13 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up configure suricata ids on freebsd 13 on FreeBSD 13 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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Common Problems 115458

RHEL 7 SSH Service Starts but Port 22 Is Unreachable

🟡 Medium   ⏱ 5–30 min  Last verified: 20 October 2021 📖 ~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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Common Problems 113122

Windows Server 2016 — NIC Teaming failover delay creates transient packet blackholes in bonded interfaces — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 October 2021 Affected versions: Windows Server 2016 📖 ~2 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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