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Tag Archives: Security

The new netstat: Playing with Get-NetTCPConnection

For some reason, I don’t like netstat. Never did. Fortunately PowerShell provides a similar command to netstat: Get-NetTCPConnection. Let’s discover the options of this command in form of this blog post.


PowerShell: Creating Login Banners (Logon Screen)

One of the first things you learn in cisco lessons is how to create login banners. A banner is a message shown to a user who is using the device. In this article I am going to configure login banners for Windows Server and Client Systems by using Windows PowerShell.


Windows Server 2016: Configuring Time based Group Membership with PowerShell

With Windows Server 2016 there is a new Feature called Privileged Access Management Feature. This feature is only available in Active Directory Environments running Windows Server 2016 Forest Mode. This guide shows step-by-step how to set up Time Based Group Membership with Windows PowerShell.


Securing Active Directory: Who can add computers to the domain? Only the domain admin?

“Only Domain administrators can add computers to the domain.” I can’t count how often I have heared these words. But when installing a new domain, a counter is configured and this counter allows each domain user to add up to 10 computers to the domain. This is the default setting. The setting can be changed and must be considered in the IT security concept.


DDOS: DNS Amplification Angriffe

Der DNS Dienst ist in Segen. Ohne DNS müssten sich Menschen IP-Adressen merken, oder altmodisch Hosts Dateien bearbeiten. DNS bietet also Komfort. Aber leider sind Komfort und Sicherheit keine Freunde. Das bekamen am 15.02.2006 einige DNS-Stammserver (Root-Server) zu spüren. Und zwar durch einen DNS Amplification Attack (DNS-Verstärkungsangriff).


Active Directory: Installing and Configuring Local Administrator Password Solution (LAPS)

This step-by-step guide demonstrates the integration of LAPS in an Active Directory environment. The user passwords of Active Directory users are stored central on all Domain Controllers. But what about the local account of the administrator? Many use the same password on all computers. A nightmare in terms of security. LAPS can store and change local administrator passwords centrally.


Use PowerShell to create compressed ZIP files

With PowerShell 5.0 two new commands are introduced: Compress-Archive and Expand- Archive. The commands compress and decompress data.


Mein E-Mail Konto: Ungewöhnliche Aktivität erkannt:

Heute bekam ich eine E-Mail von Microsoft. Es versucht jemand in mein E-Mail Konto zuzugreifen. Und zwar aus Deutschland. Während ich in Purkersdorf ganz ruhig geschlafen habe. Solche Lauser.