Brandon Hitzel
Identify, Isolate, Repair - Network Troubleshooting Tales and Tips
Discussing network troubleshooting tips, stories, and insights including 2 troubleshooting scenarios
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Brandon Hitzel
Apr 16, 202313 min read
3 Firewall Protection Techniques to Enhance Network Defenses
Three solid protection techniques you can implement on your firewall to enhance network security.
Brandon Hitzel
Oct 31, 202226 min read
Network Design: Dual ISP, DMZ, and the Network Edge
Detailed post about the network edge. Contains high and low level designs, considerations for Dual ISPs, and BGP guidance.
Brandon Hitzel
Jun 18, 20225 min read
Enterprise Wireless Design - ENWLSD Cisco Certification Study Material
An overview of the material used to study and pass the Designing Cisco Enterprise Wireless Networks ENWLSD (300-425) Network Certification
Brandon Hitzel
Jan 16, 202211 min read
Troubleshooting with Wireshark: The Case of the Gratuitous ARP
The story of a strange troubleshooting scenario where devices stop communicating inexplicably. Wireshark packet capture used for resolution.
Brandon Hitzel
Oct 14, 202014 min read
The Biggest Single Point of Failure in Human History - a Cloud
Opinion: Could we be setting ourselves up for problems with cloud dependency? Analysis and opinion of IT architecture trends
Brandon Hitzel
Apr 26, 202016 min read
Network Design Scenario #3: Remote Access VPN Design
Network Design covering Remote Access Client based VPNs aka SSL VPN
Brandon Hitzel
Nov 25, 201910 min read
Troubleshooting with Wireshark: The Case of the TCP Challenge ACK
Troubleshooting an issue where the server replies with an ACK only instead of SYN/ACK. Also I will show a few simple Wireshark tips.
Brandon Hitzel
Nov 22, 20192 min read
Cisco IT Blog Award Finalist in "Best Analysis"
Network Defense Blog has become a finalist in the Cisco IT Blog Awards! Vote now!
Brandon Hitzel
Sep 24, 201913 min read
5 Easy Router Protection Techniques - includes Attack and Packet Analysis
Executing attacks against a router using Kali Linux with Wireshark and the 5 easy steps to protect against them.
Brandon Hitzel
Mar 19, 20197 min read
Network Design Scenario #2: DMZ Design
This scenario covers the network Demilitarized zone or DMZ. Network segmentation is key for network defense. This post will discuss various
Brandon Hitzel
Jan 31, 20196 min read
Challenge Labs #2: Switching & Layer 2
These challenge labs cover layer 2 switching technology and protections Below I will showcase labs focused on switching which should give...
Brandon Hitzel
Dec 18, 20184 min read
Network Defense Against Perception - Updated
In this non-cyber network defense post we will discuss creating a network assessment document We've all heard it a million times - "The...
Brandon Hitzel
Oct 22, 20185 min read
Network Design Scenario #1: Redundant OSPF Point-to-MultiPoint WAN
Network design Scenario 1 will cover an OSPF Point-to-Multipoint WAN. Includes multi-area OSPF stub area design and pros and cons.
Brandon Hitzel
Sep 4, 20183 min read
Challenge Labs #1: CCNA/CCNP Labs
This post contains some challenge labs to help with CCNA/CCNP or networking studying. Below I will showcase 2 labs I have used in the...
Brandon Hitzel
Sep 2, 20183 min read
How to Disable Password Recovery on Cisco Devices
This article covers how to disable password recovery for certain cisco routers and switches.
Brandon Hitzel
Aug 31, 20183 min read
Knowledge is power - lots of links
Here is a large list of technology links I have bookmarked over time. "Give a man a fish, and you feed him for a day. Teach a man to...
Brandon Hitzel
Aug 29, 20183 min read
Hello World: Internet Plumbing & Data Conservation
This is a quick introduction to my new "Network Defense Blog" Welcome So I decided to start a blog. It seems so cliche when i think about...
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