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Start / Stop /Restart BIND DNS Server

Knowledge base Linux Tips and Tricks

Introduction For testing purposes I am using Univention with bind9. The greater goal is to use A...

Network browsing not working

Knowledge base Linux Tips and Tricks

Sometimes network browsing or the mapping of a SMB share with a file manager in Linux is not work...

Installation of Thunderbird

Knowledge base Thunderbird

Introduction Prerequisites Download the newest Version of Thunderbird directly from their Webpa...

Manual installation of WinBox

Knowledge base

WinBox Winbox is a very useful application from mikrotik for the purpose to manage their devices...

Add M365 account to Apple Mail

Knowledge base

Introduction Microsoft 365, Azure or Exchange Server uses a proprietary protocol for E-Mail, Cal...

Add Microsoft Outlook Account/Teams to Thunderbird

Knowledge base Thunderbird

Introduction Microsoft 365, Azure or Exchange Server uses a proprietary protocol for E-Mail, Cal...

Add E-Mail account to MS Outlook

Knowledge base

Introduction Microsoft 365, Azure or Exchange Server uses a proprietary protocol for E-Mail, Cal...

Webflow User Guide

Knowledge base CSA Webflow

1. Logging In and Dashboard visit webflow.com/login Enter username and password.  Enter yo...

Add custom certificates to Apache

Knowledge base

Introduction In numerous cases you want to enable https on a webserver like Apache. So I decid...

Add metager as search engine to your browser

Knowledge base

Introduction MetaGer is a meta-search engine focused on protecting users' privacy. Based in Germ...

Hardening of Linux

Knowledge base Linux Tips and Tricks

Introduction Despite the fact that Linux is Open Source and Linux it comes as a surprise that in...

Check for open ports

Knowledge base Linux Tips and Tricks

https://phoenixnap.com/kb/linux-check-open-ports lsof -nP -iTCP -sTCP:LISTEN netstat -tunpl...

Map a shared drive on MacOS

Knowledge base MacOS Tips & Tricks

Introduction Mapping of network drive seems to be a big issue. Hopefully this manual brings a li...

Mount SAMBA shares

Knowledge base Linux Tips and Tricks

Introduction There a several ways of mounting SAMBA shares on a Linux machine. This manual gives...

PVE - VM does not stop

Knowledge base Proxmox Virtual Environment - PVE

Introduction Sometimes a virtual machine cannot be stopped from the GUI. Resolution qm stop <n...

PVE - No quorum error

Knowledge base Proxmox Virtual Environment - PVE

Introduction A typical error on a PVE cluster is No Quorum error It can happen, when other mac...

MacOS - Flush DNS Cache

Knowledge base MacOS Tips & Tricks

Introduction For some reasons Apple nurses a bug in the DNS resolver. This leads to the problem,...

MacOS - Privacy hint / OCSP patch

Knowledge base MacOS Tips & Tricks

Introduction The Online Certificate Status Protocol (OCSP) is an Internet protocol used for obta...

How to Disable SIP

Knowledge base MacOS Tips & Tricks

Introduction System Integrity Protection (SIP) SIP protects MacOS from cyber attacks. However, ...

Boot into recovery mode

Knowledge base MacOS Tips & Tricks

Intel based Reboot and press: Command-R: Start up from the built-in macOS Recovery System. Us...