An expired certificate is a nuisance. In the case of web servers, this is indicated by the display of an untrusted connection when a user tries to open the web page. We […]
PowerShell: Alert me when Certificates expires soon
EncryptFiles.ps1: Tool for encrypting File Content with PowerShell and Certificates
In two of my previous posts I showed how to encrypt and decrypt files with certificates. I think the time has come to automate that procedure. In short, I will provide a […]
PowerShell: Alert me when Disk Space is running low on my Windows Servers (E-Mail Notification)
Without any doubt, you should have an eye on the disk space of your servers. I’ve seen so many servers crashing due to dropping disk space over time, because of saving more […]
How secure is TeamViewer? What role does the TeamViewer Master Server play?
TeamViewer is free for private use. Companies have to pay for the service. And with that service we may encounter a problem: The whole connection is established via the TeamViewer Server. Something […]
Active Directory: Configuring Event Log Subscriptions (Forwarding)
Event Viewer enables you to view events and logs on your computer. And troubleshooting an issue might require to view log files from other remote computers. Event Log Subscriptions comes into play […]
Hyper-V: Backup VMs to a shared folder with Windows Server Backup and a Scheduled Task
Last week I had the task to backup Hyper-V VMs. No Replica, no Clustering, a simple backup with Windows Server Backup. The problem was that a repeating backup job had already been set […]
PowerShell: Encrypt and store your Passwords and use them for Remote Authentication (Protect-CmsMessage)
When it comes to certificates, many people flee. The topic is not very popular, but everything is not as bad as feared. In this article I will show you how to store […]
PowerShell: Test open TCP Ports with Test-OpenPort (multiple hosts, multiple port numbers)
As the headline says, it’s all about port scanning today. When a computer sends SYN to another computer, the remote computer will usually answer with SYN + ACK or RST. By this […]
Test-FirewallAllServer: Query the Firewall status on all Windows Servers
I’ve experienced that many people deliberately disable the Windows firewall. They don’t want to get annoyed with it, if something don’t work as expected. But there’s nothing to worry about, because it […]
PowerShell: Configuring Windows Firewall
Firewalls control traffic. They use technology such as Stateful Inspection to establish a connection to other networks. In this article I describe how to configure the host-based Windows Firewall by using Windows […]
Cyber Security: Installing Microsoft Advanced Threat Analytics (ATA) version 1.8
Microsoft Advanced Threat Analytics (ATA) is a platform that enables you to protect your infrastructure from cyber attacks. ATA is using a parsing engine to capture network traffic of protocols such as […]
