Firewall

How to Configure HAProxy Load Balancer on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure HAProxy Load Balancer 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 haproxy load balancer 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 […]

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Common Problems 112633

Windows Server 2019 — Jumbo frame MTU mismatch across virtual and physical switches fragments storage traffic — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 8 August 2021 Affected versions: Windows Server 2019 📖 ~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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How to Install Caddy Web Server on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install Caddy Web Server on FreeBSD 13

Introduction This guide explains how to Install Caddy Web Server on FreeBSD 13 on FreeBSD 13. 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 Configure IPsec Transport Mode for Server-to-Server Encryption on Windows Server 2016 — Windows Server 2016 tutorial on Progressive Robot

How to Configure IPsec Transport Mode for Server-to-Server Encryption on Windows Server 2016

Introduction IPsec Transport Mode encrypts traffic directly between two Windows Server 2016 hosts without requiring a VPN gateway or tunnel infrastructure. Unlike IPsec Tunnel Mode (used in site-to-site VPNs), Transport Mode encrypts only the data payload of each IP packet, leaving the original IP headers intact. This makes Transport Mode ideal for server-to-server communication within […]

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How to Install Jaeger for Distributed Tracing on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Jaeger for Distributed Tracing on RHEL 8

Jaeger is an open-source, end-to-end distributed tracing system originally developed by Uber Technologies and now a CNCF graduated project. It lets you follow a single user request as it propagates across dozens of microservices, measure the latency contribution of each span, and pinpoint the exact service or database call responsible for a slowdown. On RHEL […]

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How to Set Up IPsec with StrongSwan on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Set Up IPsec with StrongSwan 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 set up ipsec with strongswan 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 […]

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How to Configure Logical Volume Manager on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure Logical Volume Manager on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure logical volume manager on ibm aix 7.1 on […]

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How to Install and Configure Dovecot IMAP Server on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install and Configure Dovecot IMAP Server on RHEL 7

How to Install and Configure Dovecot IMAP Server on RHEL 7 Dovecot is a secure, high-performance IMAP and POP3 server that integrates seamlessly with Postfix on RHEL 7. While Postfix handles the transport of mail (sending and receiving via SMTP), Dovecot provides the retrieval layer — allowing mail clients such as Thunderbird, Outlook, or Apple […]

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How to Install Certbot and Automate Let's Encrypt Renewals on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Certbot and Automate Let’s Encrypt Renewals on RHEL 8

Let’s Encrypt provides free, trusted TLS certificates, and Certbot is the official client for obtaining and renewing them automatically. On RHEL 8, Certbot is available through the EPEL repository and integrates tightly with both Nginx and Apache via dedicated plugins. Automating renewals with the built-in systemd timer ensures your certificates never expire without manual intervention. […]

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How to Install and Configure Squid Proxy on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install and Configure Squid Proxy on FreeBSD 13

Introduction How to Install and Configure Squid Proxy 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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