Firewall

How to Use Python Virtual Environments on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Use Python Virtual Environments on FreeBSD 13

Introduction Deploying use python virtual environments 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 standard […]

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How To Set Up a Firewall with UFW on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Set Up a Firewall with UFW on Ubuntu 16.04

UFW, or Uncomplicated Firewall, is an interface to iptables that is geared towards simplifying the process of configuring a firewall. While iptables is a solid and flexible tool, it can be difficult for beginners to learn how to use it to properly configure a firewall. If you’re looking to get started securing your network, and you’re not sure which tool to use, UFW may be the right choice for you. This tutorial will show you how to set up a firewall with UFW on Ubuntu 16.04.

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Common Problems 114911

RHEL 8 firewalld Blocking Application Port Despite Service Running

🟡 Medium   ⏱ 5–30 min  Last verified: 19 November 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 Scan for Vulnerabilities with OpenVAS on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Scan for Vulnerabilities with OpenVAS on FreeBSD 13

Introduction This guide explains how to Scan for Vulnerabilities with OpenVAS 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 […]

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Common Problems 115534

logrotate Not Rotating Large Logs

🟡 Medium   ⏱ 5–30 min  Last verified: 18 November 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 Install Packer on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install Packer on FreeBSD 13

Introduction Deploying install packer 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 standard base + […]

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How to Set Up iSCSI Storage on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up iSCSI Storage on RHEL 8

iSCSI (Internet Small Computer Systems Interface) allows you to share block storage devices over a standard TCP/IP network, making it a cost-effective alternative to dedicated Fibre Channel SANs. On RHEL 8, the targetcli package provides a powerful interactive shell for configuring iSCSI targets, while iscsi-initiator-utils handles the client side. This tutorial walks through setting up […]

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Common Problems 112493

Windows Server 2019 — RRAS NAT translation table saturation causes outbound traffic drops during peak usage — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 16 November 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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Common Problems 117514

Ubuntu 20.04 LTS UFW Blocks Required Service Ports

🟡 Medium   ⏱ 5–30 min  Last verified: 15 November 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 Install Keepalived for High Availability on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install Keepalived for High Availability 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 install keepalived for high availability 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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