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How-to

How-to guides for server admins: short, task-focused steps for cPanel, DirectAdmin, Linux, Windows Server and networking.

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

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

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

SIP Ports Firewall Rules: 4 Setups for CSF, firewalld and pfSense

Which ports a PBX really needs (SIP 5060/5061 and the RTP media range), how to open them in CSF, firewalld and pfSense, and how to restrict SIP to your trunk provider so scanners cannot brute-force extensions.

September 30, 2026

Zoho Cliq Networks: set up external partner collaboration

Create a Zoho Cliq Network for partners, vendors and contractors, configure its branding, policies, roles and teams, invite external members with expiring links or bulk import, delegate administration, and verify that guests see only what they should.

September 29, 2026

Upgrade vCenter 8 to 9: Safe Migration Assistant Steps

Perform the two-stage VCSA 8.0 U3 to vCenter 9.1 upgrade using the installer ISO, from pre-checks and backups through deploying the new appliance, copying data, and validating services and plugins afterwards.

September 29, 2026

Imunify360 Whitelist IP and Countries from the CLI: Commands

Use imunify360-agent ip-list and country-list commands to whitelist and blacklist addresses, networks and countries, remove greylist blocks, create RBL exemptions, script bulk imports, and confirm the entries are active in the firewall.

September 29, 2026

Transfer FSMO Roles with PowerShell and ntdsutil: Safe Steps

How to move the five FSMO roles between domain controllers cleanly with Move-ADDirectoryServerOperationMasterRole, and how to seize them with ntdsutil when the old holder is gone for good, including the metadata cleanup you must do afterwards.

September 29, 2026

Imunify360 Force Update and Rollback: Safe Staged Rollouts

Understand how Imunify360 staged rollouts delay new versions for up to two weeks, update manually with dnf or apt, force the latest build with the official script, test beta from the testing repository, and roll back to a previous package version safely.

September 29, 2026

Upgrade ESXi 8 to 9.1: Safe esxcli and Lifecycle Manager Steps

Plan and execute an ESXi 8.0 U3 to 9.1 upgrade, either per host with esxcli software profile update from an offline bundle or cluster-wide with vSphere Lifecycle Manager images, with the pre-checks, VIB conflicts and rollback path.

September 29, 2026

DISM RestoreHealth Offline Source: Windows 11 Repair

Run DISM RestoreHealth and SFC in the right order on Windows 11 and Windows Server, read the CBS and DISM logs, and repair the component store from a mounted install.wim when Windows Update cannot be reached.

September 29, 2026

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