Senior Architect - IT Security and Compliance at TPC Group. Houston, Texas.
My name is Brody Kilpatrick, my Github profile is Lone Star Coder (https://github.com/LoneStarCoder). I am currently employed as Senior Architect - Security and Compliance. I have historically performed various levels of sysadmin, application, and automation work. This website contains many years of my blog posts consolidated into a single site. For any blog post that was either written or aided by AI, I add a comment or disclaimer.
Read more about my background and full work history on the About page.
How to install a simple postfix relay on Red Hat Linux
A primer on setting up the simplest possible Postfix relay on Red Hat Linux, including adding a custom mail header to every message that traverses the relay. October 24, 2025
Create a Simple RAG System with AnythingLLM and LMStudio
This beginner-friendly tutorial guides you through building a local Retrieval-Augmented Generation (RAG) system without writing code, running entirely on your own hardware for complete privacy and control. October 9, 2025
Query Windows Firewall Rules ONLY from GPO
A PowerShell script that will only retrieve firewall rules that were created via an Active Directory GPO or the local security policy. August 18, 2022
Make the Windows Defender Firewall Log Useful with PowerShell
A small PowerShell script to parse the Windows Firewall log into an array. August 16, 2022
Some Notes on Exchange 2019 and Preparing AD
Notes from recent experience preparing AD for Exchange 2019 and the commands used, since the official documentation was incomplete. October 15, 2021
See the full list of 137 posts.
The Name Resolution Trinity: mDNS, LLMNR & NBT-NS Attack Surface.
The combination of mDNS, LLMNR, and NBT-NS creates a devastating attack surface that allows adversaries to poison name resolution, capture credentials, and establish persistence in enterprise networks. Recent threat intelligence shows these protocols are increasingly targeted in sophisticated attack campaigns, with attackers leveraging automated tools to exploit all three protocols simultaneously. (written by ai) July 11, 2025
Brody Kilpatrick Blog (WordPress) and the IT-related posts from my Blogger blogs (Operations Manager 2012, System Center Service Manager, Brody’s IT Tasks, and my main Brody Kilpatrick blog) have all been consolidated into the Blog on this site.
There is more history, but some have been abandoned.