Firewall

How to Optimize AIX for High-Throughput Workloads on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Optimize AIX for High-Throughput Workloads on IBM AIX 7.2

Introduction IBM AIX 7.2 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 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to optimize aix for high-throughput workloads on ibm aix 7.2 […]

Read more
How to Install MongoDB on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install MongoDB on RHEL 7

How to Install MongoDB on RHEL 7 MongoDB is a document-oriented NoSQL database that stores data in flexible, JSON-like BSON documents rather than traditional rows and columns. Its schema-less design makes it an excellent choice for applications that need to handle varied or rapidly evolving data structures, such as content management systems, real-time analytics platforms, […]

Read more
How to Configure Docker Networking on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Docker Networking on RHEL 8

Docker networking determines how containers communicate with each other, with the host, and with external networks. RHEL 8 adds a layer of complexity because Docker writes its own iptables rules at startup, which can interact unexpectedly with firewalld — the default firewall manager on RHEL 8. Understanding Docker’s network drivers and how they map to […]

Read more
How to Enable HTTP/2 in Nginx on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Enable HTTP/2 in Nginx on FreeBSD 12

Introduction Deploying enable http/2 in nginx on freebsd 12 on a FreeBSD 12 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 […]

Read more
How to Set Up Ansible on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up Ansible on Debian 10

Introduction This guide explains how to Set Up Ansible on Debian 10 on Debian 10 Buster. Debian Buster uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 10 install with the standard […]

Read more
How to Configure Remote Access VPN with SSTP on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Remote Access VPN with SSTP on Windows Server 2012 R2

How to Configure Remote Access VPN with SSTP on Windows Server 2012 R2 Secure Socket Tunneling Protocol (SSTP) is a VPN tunneling protocol developed by Microsoft that encapsulates Point-to-Point Protocol (PPP) traffic over HTTPS (SSL/TLS on port 443). Because SSTP uses port 443, it traverses most firewalls and web proxies without requiring special port forwarding […]

Read more
Common Problems 115131

firewalld Blocking Required Application Port – RHEL 8 Post 029

🟡 Medium   ⏱ 5–30 min  Last verified: 10 April 2020 📖 ~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 […]

Read more
How to Set Up WebSphere Application Server on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Set Up WebSphere Application Server 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 set up websphere application server on ibm aix 7.1 […]

Read more
How to Configure DNS Client on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure DNS Client on IBM AIX 7.2

Introduction IBM AIX 7.2 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 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure dns client on ibm aix 7.2 on IBM […]

Read more
CHAT