Zeekurity Zen Zeries

Zeekurity Zen Zeries

Zeek (formerly named Bro) is my favorite network security monitoring platform, and I’ve used and promoted it throughout my career.  It generates rich network metadata that’s incredibly valuable for incident response, forensics, and general troubleshooting. For most people, the main challenge with using Zeek is in setting 

How to Choose the Right EPP / EDR Solution

How to Choose the Right EPP / EDR Solution

This post is featured on the CrowdStrike Blog. Introduction Like most cybersecurity professionals, you’re looking for an EPP that protects against current and evolving threats, is easy to deploy and manage, and is ultimately invisible to end-users.  Today, there are dozens of these platforms available, and 

Zeekurity Zen – Part III: How to Send Zeek Logs to Splunk

Zeekurity Zen – Part III: How to Send Zeek Logs to Splunk

This is part of the Zeekurity Zen Zeries on building a Zeek (formerly Bro) network sensor. Overview In our Zeek journey thus far, we’ve: Set up Zeek to monitor some network traffic. Used Zeek Package Manager to install AF_PACKET and other useful packages. Now we’ll 

Zeekurity Zen – Part I: How to Install Zeek on CentOS 8

Zeekurity Zen – Part I: How to Install Zeek on CentOS 8

This is part of the Zeekurity Zen Zeries on building a Zeek (formerly Bro) network sensor. Overview This guide assumes you’ll be installing Zeek on CentOS 8, given how popular CentOS tends to be in the enterprise.  However, the guide should work for any RHEL-based 

How To Build a SANS GIAC Index

One of the keys to passing SANS GIAC exams is to build a comprehensive index to quickly find information during the exam.  Building an index will also help you study as it forces you to thoroughly review the material.  The steps below detail how to 

Palo Alto Firewall: macOS Updates NSURLErrorDomain error -1012

Palo Alto Firewall: macOS Updates NSURLErrorDomain error -1012

This is part of the Palo Posts how-to guides for getting the most from your Palo Alto firewall on a home or small business network. Overview About a month ago, I enabled decryption on my Palo Alto firewall and limited it only to traffic to 

Eric’s Top 7 Ways To Get Ready For Security Awareness This Summer

Eric’s Top 7 Ways To Get Ready For Security Awareness This Summer

Once upon a time, I believed that security awareness trainings were simply boring computer-based training videos that compliance requirements forced upon companies.  You’d simply “next, next, next” your way through and learn nothing of value.  However, in my current role I am directly responsible for 

Palo Alto Firewall: External Dynamic Lists

Palo Alto Firewall: External Dynamic Lists

This is part of the Palo Posts how-to guides for getting the most from your Palo Alto firewall on a home or small business network. Overview I recently attended Palo Alto’s annual Ignite conference for the first time.  It was a great experience for learning