What’s Altbrain?
Glad you asked! As the name implies, it’s my alternate brain. It’s a place to come when all the bits […]
Linux Firewall Management using firewalld
Over the past few months, I feel like I’ve been on a tear with deploying Linux. Most of the deployments
Overview of Single sign-on with SAML
I’ve found myself in several discussions about Single Sign-On (SSO) over the last few months and figured this would be
IPv4 CIDR Reference Chart
As the title suggests, a clean IPv4 CIDR chart. CIDR Prefix Subnet Mask Total IPs /32 255.255.255.255 1 /31 255.255.255.254
Granting an Entra App (Service Principal) access to a SharePoint Site using Graph Explorer
This process can be used if you need to run an unattended script or application (for example, a PowerShell script
Why Azure Resource Naming Matters
There are a few lessons in life that are worth learning. One of them is establishing a robust naming convention
How to Migrate Windows DHCP Server to a new Server
They say all good things come to an end, and this is most certainly the case with Windows Server operating
What’s Ubuntu Pro? How to manage it
Ubuntu Pro is a comprehensive subscription service provided by Canonical that extends the security and compliance capabilities of Ubuntu LTS
Cisco Nexus Show Commands
A list of Cisco Nexus show commands that you can run to obtain information about Nexus switches. General System Information
Cisco Catalyst Show Commands
Not to much to say here other than this is a solid list of Cisco IOS/IOS-XE show commands that you
Windows 11 on Unsupported Hardware
Have you ever tried to install Windows 11 and bumped up against the “Your PC doesn’t meet the minimum system
Common TCP, UDP Ports, and Tightening up Firewalls
Below is a list of common ports and protocols for use on your Windows and Linux firewalls, switch ACL’s, network
Windows 11 Debloat : A Guide to Debloating like a Pro (Without Breaking the Essentials)
I’ll probably warn you a few times here as there’s a significant chance that something could break if you run