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
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...
Numbering the IPv4 and IPv6 WAN Link between ISP and Customer
In this post I want to show the different alternatives Internet Service Provider (ISP) can use to numbering their IPv4 and...
pfSense Boot Loop after Power Outage
A few weeks ago I installed pfSense 2.5.2 on a kettop Mi4005L Mini PC. This Mini PC uses an Aptio...
Apache HTTP Server and .htaccess
In this post I want to summarize some information about securing your Apache websites. This topic is well documented from...
Set up Fail2ban on Ubuntu 20.04.3 LTS
In this post I want to show how to install and use Fail2Ban on Ubuntu. Fail2Ban is an intrusion prevention...
Nikto Web Server Scanner
In this post I want to show how to install and using the nikto command-line vulnerability scanner. Introduction Nikto is...