Firewall

How to Set Up a Git Server with Gitea on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up a Git Server with Gitea on FreeBSD 12

Introduction How to Set Up a Git Server with Gitea on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 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, […]

Read more
Common Problems 113000

Windows Server 2016 — DNS resolution times out for external hosts — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 July 2019 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 […]

Read more
How to Configure tcpdump on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure tcpdump 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 tcpdump on ibm aix 7.1 on IBM AIX […]

Read more
How to Configure DHCP with DNS Dynamic Update on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure DHCP with DNS Dynamic Update on Windows Server 2019

Introduction to DHCP with DNS Dynamic Update on Windows Server 2019 DNS Dynamic Update (DDNS) allows the DHCP server to automatically register and deregister DNS records on behalf of DHCP clients whenever they obtain, renew, or release IP addresses. Without DDNS, administrators must manually maintain DNS A records and PTR records every time a machine […]

Read more
How to Set Up NAT on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Set Up NAT on Windows Server 2012 R2

How to Set Up NAT on Windows Server 2012 R2 Network Address Translation (NAT) allows a Windows Server 2012 R2 machine to function as an internet gateway, translating private IP addresses from an internal network to a public IP address for outbound internet access. This is commonly used for branch offices, isolated lab networks, or […]

Read more
How to Configure PostgreSQL Remote Access on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure PostgreSQL Remote Access on FreeBSD 12

Introduction How to Configure PostgreSQL Remote Access on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 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 packet […]

Read more
How to Set Up a Ceph Storage Cluster on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up a Ceph Storage Cluster on RHEL 8

Ceph is a unified, distributed storage system that simultaneously provides object, block, and file storage on commodity hardware. It eliminates single points of failure through replication and erasure coding, and scales linearly by adding nodes. The cephadm tool, introduced in Ceph Octopus, simplifies cluster deployment by using containers (Podman on RHEL 8) to manage Ceph […]

Read more
How to Install Oracle Database on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Install Oracle Database 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 install oracle database on ibm aix 7.1 on IBM […]

Read more
How to Install and Configure cAdvisor for Container Monitoring on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install and Configure cAdvisor for Container Monitoring on RHEL 8

cAdvisor (Container Advisor) is an open-source daemon from Google that collects, aggregates, and exports real-time resource usage and performance metrics for every running container on a host. Unlike Node Exporter, which reports host-level statistics, cAdvisor descends into cgroup hierarchies to expose per-container CPU, memory, network, and filesystem metrics in Prometheus format. On RHEL 8 with […]

Read more
How to Configure OpenSSH Server on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure OpenSSH Server on Windows Server 2016

Introduction OpenSSH Server is available for Windows Server 2016 as an optional Windows feature (from Windows 10 1809 / Server 2019 onward it is built-in; for Server 2016 it is installed as a standalone package). Installing OpenSSH on Windows Server 2016 enables SSH-based remote access — the same client tools used on Linux — giving […]

Read more
CHAT