All
.NET
AD CS
AD DS
AD FS
Amazon Web Services (AWS)
Atlassian
Azure Arc
BGP
Blazor Server
brief
C#
Cheat Sheets
Dell PowerEdge
DevOps
E-Mail
Exchange
Failover Clustering
Fax Server
FreeBSD
General
Google Cloud
Hype-Jargon
Hyper-V
IBM X3650
IEEE 802.11 WLAN
Infrastructure as Code (IaC)
IPv4 | IPv6
Kubernetes
Let's Encrypt
Linux
Logical Volume Manager (LVM)
Microsoft 365 (Office 365)
Microsoft Azure
Microsoft Defender
Microsoft Entra
Microsoft Intune
Microsoft Teams
Monitoring
Network File System (NFS)
Networks
OAuth2.0
OpenID Connect
Oracle Linux
pfSense
PKI
Postfix
PostgreSQL
PowerShell
Python
Red Hat
SAML 2.0
SAP
Security
Session Border Controller (SBC)
SLES
SQL Server
Storage
Sysinternals
System Center
TLS/SSL
Ubuntu
VEEAM
Virtual Machine Manager (VMM)
Visual Studio
VMware vSphere
VPN
Web server
Windows
X.509 PKI
Enable TLS for Postfix on Ubuntu
Regarding the Postfix documentation, TLS support is turned off by default, so you can start using Postfix as soon as...
Code Signing in Visual Studio
In this post I want to show how you can sign your Visual Studio application by using a X.509 code...
Prevent Members from Domain Users Group to Logon by default to any Domain joined Computers
In this post I want to show how you can prevent that domain users can logon by default to each...
Active Directory Certificate Mapping – Implicit vs. Explicit
In Active Directory you can use certificate mapping to bind an identity to a X.509 certificate, which then can be...
Using HTTP Strict Transport Security (HSTS) with Apache2
Securing the connection to a website by using a HTTP 301 Moved Permanently response status, to notify the user’s browser...