Tutorials - rootDB

How do I remove the Google Updater from macOS?

NPS 802.1x Radius Authentication with EAP-TLS and strong certificate mapping for non domain joined devices

Cisco router with zone based firewall and port forwarding

Outlook 2016 + 2019 : Fix Meetings are created as Teams Online Meetings by default

For IT Users and Developers

Become part of a new community that brings together IT professionals, developers and administrators from around the world to share knowledge and find innovative solutions. From cloud computing and DevOps to cybersecurity, you can benefit from proven experience and expertise at the highest level.

colinardo 2 days agoMikroTikFirewallDevelopment

Mikrotik Scripting: Using the "place-before" parameter to place fw rule "after" other rule

This is a quick trick to programmatically place firewall rules after specific rules, not before. Normally you already have the place-before parameter when adding firewall ...

max 3 days agoMicrosoftWebbrowserWindows 11

Microsoft Edge no longer starts - Reset Edge

On a couple of occasions, after logging in to Edge, the browser itself would no longer start. The usual PC restart didn't help either. Tested ...

Frank 4 days agomacOS

How do I remove the Google Updater from macOS?

Who hasn't experienced this: you delete Google Chrome in macOS and yet the annoying ‘Google Updater has added objects that can run in the background’ ...

Frank 5 days agoPHP

Fast string compare function for PHP

Hello User, As a developer, I was faced with a challenge: I needed a fast but rough string comparison function for our website. It checks ...

Frank on Oct 12, 2024WebbrowserWebserverWeb Development

Web server tuning: display WebP images directly in the browser

When switching to WebP images, I encountered a little unexpected behaviour: When linked directly, most browsers immediately start downloading WebP images instead of displaying them ...

AlexWisha on Apr 17, 2024Linux NetworkUbuntuServer

How to set up and configure a Linux GRE tunnel

This guide will walk through the setup and configuration of a GRE tunnel between two Linux hosts. The two Linux hosts are running Ubuntu 22.04 ...

rubberman on Nov 11, 2023DevelopmentC, C++

CodeBlocks Portable with MinGW 32 and 64 bit on Windows

1. Introduction Hello community Besides VC, I'm reasonably happy with Code::Blocks as an IDE for C and C on Windows. While you probably can't convince ...

colinardo on Aug 28, 2023Windows NetworkEncryption, CertificatesWindows ServerRouters, Routing

NPS 802.1x Radius Authentication with EAP-TLS and strong certificate mapping for non domain joined devices

Introduction This tutorial describes the procedure how to use 802.1x EAP-TLS strong authentication especially for non domain joined devices on your LAN. So your device ...

colinardo on Aug 02, 2023MicrosoftOutlook MailMicrosoft Office

Outlook 2016 + 2019 : Fix Meetings are created as Teams Online Meetings by default

Hi folks. Some of you may encounter the problem that older Outlook versions create new meetings by default as Online-Meetings when Microsoft Teams is installed ...

colinardo on Mar 28, 2023MikroTikDNSLAN, WAN, WirelessRouters, Routing

Mikrotik: mDNS Repeater as Docker-Container on the Router (ARM,ARM64,X86)

TOC Preface mDNS repeating (Multicast DNS) on Mikrotik routers, a feature often requested, is not yet part of RouterOS itself at the time of writing ...

Frank on Jan 20, 2023LinuxMonitoring

Install Monitoring Uptime Kuma

I have been looking for a simple monitoring program for our website for some time. Thanks to the help of our users I found in ...

aqui on Jan 10, 2023FirewallSecurityNetworksRouters, Routing

Cisco router with zone based firewall and port forwarding

This tutorial is a short extension to the more comprehensive local . Due to several requests regarding port forwarding and combination with a secure DMZ ...

colinardo on Dec 30, 2022MikroTikDNSDevelopmentRouters, Routing

Mikrotik Scripting: Resolve Domain to IPv6 Address

Hello Mikrotik users. Unfortunately Mikrotik does not provide an explicit function for resolving DNS names to IPv6 addresses. The :resolve function only returns a single ...

Frank on Nov 21, 2022DevelopmentUbuntuDatabases

Ubuntu: Build Redisearch v2 module for Redis from source code

Here is a tutorial to compile the Redisearch module v2.x for Redis by yourself. At the moment you can get it as binary only as ...

aqui on Mar 14, 2022VPNLAN, WAN, WirelessNetworksRouters, Routing

Cisco IPsec VPN with Mikrotik or FritzBox

Preamble The following tutorial is a quick overview how a site-to-site VPN access using the IPsec protocol can be realized with a Cisco IOS ...

aqui on Jan 28, 2022LinuxLinux NetworkVPNRouters, Routing

IKEv2 VPN server for Windows and Apple clients on Raspberry Pi

Preamble The following tutorial did not claim to be fully comprehensive and the Raspberry Pi should be taken here as an example. It works ...

colinardo on Oct 16, 2021MicrosoftWindows 11

Windows 11 - Deploy Default Startmenu Layout

In Windows 11, the customization options for administrators have been further reduced. The previous possibility to customize the menu via the LayoutModification.xml file has been ...

colinardo on Oct 11, 2021MicrosoftWindows 11

Windows 11 - Activate classic context menu

Short tip for those who are annoyed by the new context menu under Windows 11. But there is a hack to define the classic menu ...

max on Oct 05, 2021MicrosoftWindows 11

Windows 11 Download Alternative to save an ISO or create a USB stick

For all who are looking for an alternative download possibility for Windows 11 (Release Build 22000.194) there is the Universal MediaCreationTool Script. The MediaCreationTool.bat is ...

Frank on Sep 21, 2021MicrosoftOutlook Mail

Add an Outlook 2019 IMAP account - No more username in settings - Solution

Another curiosity under Office 2019 just hit me hard. I wanted to add a normal IMAP/SMTP account to Outlook 2019. But that was so difficult ...

colinardo on Jul 10, 2021MikroTikOther systems

RouterOS 7.1beta6 - GRE Tunnel does not work with non Mikrotik devices (fix)

Small advice for all users trying to create a simple GRE Tunnel to a non Mikotik device under the current beta version. If the tunnel ...

aqui on Jul 05, 2021Networking BasicsLAN, WAN, WirelessNetworks

Cisco WLAN access point 1142N and 2702, 3702 for SoHo use

Preamble Renewals of commercial WiFi enterprise networks cause of new standards and hence new required hardware (additional 6 GHz band etc.) result in the ...

aqui on Jul 02, 2021VPNMikroTikNetworksRouters, Routing

Cisco, Mikrotik, pfSense site-to-site VPN with dynamic routing

Preamble The following tutorial is an addon to existing VPN tutorials on administrator.de. It describes a mixed hardware VPN site-to-site setup between Cisco and Mikrotik ...

Frank on Jun 24, 2021MicrosoftWindows 11

Windows 11: Set the Start menu back to the left

In the latest Windows 11 version, the new Start menu is displayed in the centre: You can easily set it back to the left side ...

Frank on Jun 22, 2021MicrosoftWindows 10

Windows 10 Core Isolation: Remove incompatible drivers

Hello, Actually, I just wanted to follow the Windows Security recommendations and under Settings -> Windows Security -> Core Isolation, turn on Memory Integrity. According ...

Frank on Jun 22, 2021LinuxRedHat, Fedora, CentOS

Install Powerline for Fedora

Powerline is a very practical optical extension for vim and the Linux shell (bash, zsh, tmux, IPython, Awesome and Qtile). You can find an overview ...

Dani on May 31, 2021Microsoft

Staying on top of Office 365 Updates

Moin! One of the main challenges when using Office 365 products and services is to stay aware of announcements, updates and upcoming features. This applies ...