Security - IT - Solutions

How to Create a Key Pair for EC2 Instances (AWS)

This article has not been completed yet. However, it may already contain helpful information and therefore it has been published at this stage. Introduction: #ec2-user Conlusio: Sources:General prerequisites for connecting to your instance - Amazon Elastic Compute CloudBefore you connect to your Linux

Exchange Online

How to avoid Spam (Part 3) - Implementing a country based email filter

In the second part of this series I showed you how to block specific IPs (Exchange & Exchange online). See link below: Link An additional way to reduce the amount of spam is to limit the countries (and languages) you want to get emails

Powershell

Managing File System Access Control Lists (Powershell)

Today I had to copy the permissions from one folder to another folder. Instead of doing this manually, I tried to do it with Powershell. And I succeeded... Here are my experiences with it.... Obtaining the ACL for files and folders:get-acl <folder&

Software

How to create a self-signed Certificate interactively (GUI)

During my activities as a system administrator, it happens from time to time that I have to provide a certificate for a variety of purposes. Since a self-created and self-signed certificate is often sufficient, I would like to introduce my favorite way to create

Powershell

How to avoid Spam (Part 2) - Identifying and blocking IPs

The following steps were taken with the help of Powershell and the associated modules (Exchange). In the first part of this series I showed you how to display the mail history of the last 2 days (Exchange & Exchange online). See link below: Link

Powershell

How to avoid Spam (Part 1) - Searching the mail history for spam

The following steps were taken with the help of Powershell and the associated modules (Exchange). Due to recent events (a customer was the victim of a malware attack) we are exposed to an increased amount of spam. More precisely, the mentioned customer was a