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Step-by-step guides and fixes for cPanel, DirectAdmin, Linux, Windows Server, email and DNS.

Step-by-step guides and fixes for server administrators: cPanel, DirectAdmin, Windows Server, email, DNS, security and more. Free to read, tested on real servers. Press / to search.

368 guides

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Default Browser Group Policy: Set Chrome, Edge or Firefox on Windows 11

Make Chrome, Edge or Firefox the default browser on every domain computer with a default associations XML file, choose a PDF handler, understand when Windows applies it, deploy the same file through Intune and avoid unsupported UserChoice scripts.

September 30, 2026

Set the Edge and Chrome Homepage with Group Policy: Complete Guide

Configure the home page, startup pages, Home button and new tab page for Microsoft Edge and Google Chrome with Group Policy, registry values or Intune, choose between mandatory and recommended policies, and add Firefox with the same approach.

September 30, 2026

Install Active Directory on Windows Server 2025: New Forest Step by Step

Build a new Active Directory forest on Windows Server 2025: prepare the server, add the AD DS role, promote with PowerShell or Server Manager, then configure DNS, sites, OUs and health checks.

September 30, 2026

Install Issabel 5 on Rocky Linux 8: Simple Step-by-Step PBX Setup

Prepare a minimal Rocky Linux 8 server, run the Issabel 5 netinstall script, log in to the web interface, and set up extensions, a trunk, routes, the firewall and backups.

September 30, 2026

Install Asterisk 22 LTS on Debian 13: Step-by-Step Guide

Build Asterisk 22 LTS from source on Debian 13, run it as a non-root service, register two PJSIP phones, add a simple dialplan and lock down the SIP and RTP ports.

September 30, 2026

Install VMware ESXi 9: Complete Step-by-Step Setup Guide

Check the hardware, build the install media, run the ESXi 9 installer, set the management network in the DCUI, then log in to the host client to add a datastore, NTP and the first VM.

September 30, 2026

Install Proxmox VE 9: Step-by-Step Setup on Bare Metal

A complete Proxmox VE 9 installation: prepare the hardware and USB stick, choose ZFS or ext4, set the management network, switch to the no-subscription repository, update, and create the first virtual machine.

September 30, 2026

Port Phone Number to VoIP: 6 Steps and Common Rejections Explained

The six steps to move business phone numbers to a VoIP provider or cloud phone system, the documents carriers ask for, the reasons ports get rejected, and how to avoid missed calls on port day.

September 30, 2026

Migrate PBX to Cloud: 8-Step Plan From 3CX or Asterisk

An eight-step plan for moving from an on-premises 3CX, FreePBX or Asterisk system to a hosted phone system: what to inventory, how to test the network, how to pilot and port numbers, and what to keep when you switch the old PBX off.

September 30, 2026

SIP SRV Records: DNS Setup for 3 Transport Types

How SIP clients find a server through DNS (NAPTR, then SRV, then A/AAAA), the exact records to create for UDP, TCP and TLS, how priority and weight give failover, and how to test the result.

September 30, 2026

VoIP Call Quality: Jitter, Packet Loss and MOS Explained With 3 Targets

The three numbers that decide VoIP call quality (delay, jitter and packet loss), the targets to aim for, how MOS and R-factor are derived, and a repeatable way to measure a connection before and after changes.

September 30, 2026

VoIP One-Way Audio Fix: 6 Checks for NAT and RTP

A step-by-step way to find why one side of a call cannot hear the other: read the SDP, check NAT settings in PJSIP and 3CX, confirm RTP reaches the PBX, and remove SIP ALG and short UDP timeouts.

September 30, 2026

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