Fireside Fridays
We all have gaps in our security knowledge. Fireside Fridays is an opportunity to fill in those gaps. Each Friday we will pick a topic and go over the basics in a webcast. These sessions will be a combination of lecture and hands on labs. We’ll cover a single topic and hopefully fill in some of those cracks. Think of it as a single focused “ask us anything” session. No judgment on the questions that get asked, just a chance to raise the bar for all of us.
Below is an archive of previous Fireside Friday webcast recordings including the slide decks.
Index
January 10, 2025 – Windows Command Line
January 17, 2025 – Linux Terminal
January 24, 2025 – Introduction to Security Architecture
January 31, 2025 – Evaluating Risk
February 07, 2025 – Layer 2 Communications
February 14, 2025 – Routing and VLANs
February 28, 2025 – IP Addressing and Subnetting
March 07, 2025 – Packet Sniffing
March 14, 2025 – IPv6 for IPv4 Users
March 28, 2025 – Packet Crafting
April 04, 2025 – IP Transports
April 18, 2025 – Firewalling – Hands-on
April 25, 2025 – Anatomy of a VPN – Part 1 of 3
May 02, 2025 – Anatomy of a VPN – Part 2 of 3
Fireside Friday – Windows Command Line
January 10, 2025
Recording:
Slide Deck:
Fireside Friday – Linux Terminal
January 17, 2025
Recording:
Slide Deck:
Fireside Friday – Introduction to Security Architecture
January 24, 2025
Introduction to Security Architecture will be a high level overview of what goes into building a secure network environment from the ground up. This class will be all lecture.
Recording:
Slide Deck:
Fireside Friday – Evaluating Risk
January 31, 2025
When it comes to determining “risk”, many times we just try our best guess. However, there are both qualitative and quantitative methods for evaluating risk against an environment. In this session we will go over the basics. This class will be all lecture.
Recording:
Slide Deck:
Fireside Friday – Layer 2 Communications
February 07, 2025
In this session we will look at how systems on the same logical network exchange information. You will need access to a Windows or Linux system to follow along with the labs.
Recording:
Slide Deck:
Fireside Friday – Routing and VLANs
February 14, 2025
This session will cover how systems on remote networks exchange information. We will also discuss routing protocols and virtual networks. You will need access to a Windows or Linux system to follow along with the labs.
Recording:
Slide Deck:
Fireside Friday – IP Addressing and Subnetting
February 28, 2025
In this session we will discuss all of the things about IP addressing and subnet masking. We will also discuss data conversions between common formats used in network communications. You will need access to a web browser to perform the labs.
Recording:
Slide Deck:
Fireside Friday – Packet Sniffing
March 07, 2025
Hey! What’s that smell? That’s just packets going by on the wire! In this session we will discuss packet sniffing and decoding. We’ll also look at some of the common tools you can use. You will need access to Wireshark and a Linux terminal to perform the labs.
Recording:
Slide Deck:
Fireside Friday – IPv6 for IPv4 Users
March 14, 2025
Many of us are caught in a knowledge gap – we understand IPv4 and how to manage these networks, but have limited experience with IPv6. This talk will cover the things you need to know to work with IPv6.
Recording:
Slide Deck:
Fireside Friday – Packet Crafting
March 28, 2025
In this Fireside we’ll discuss how to manually open and connect to TCP/UDP ports and how to create your own custom IP packets. You will want to preload ncat and hping3.
Recording:
Slide Deck:
Fireside Friday – IP Transports
April 04, 2025
We’ve discussed the basics of IP communications. Let’s move up the stack and deep dive on ICMP, UDP, TCP and QUIC.
Recording:
Slide Deck:
Fireside Friday – Firewalling
April 11, 2025
In this Fireside we’ll deep dive into packet filtering firewalls as well as proxies. We will also discuss Network Address Translation (NAT) and how it works.
Recording:
Slide Deck:
Fireside Friday – Firewalling – Hands-on
April 18, 2025
In the last Fireside we discussed firewalling. In this hands-on class we will create various types of packet filtering firewalls and observe how they impact traffic patterns. For this class you will need access to a Linux system with Netfilter/iptables.
Recording:
Slide Deck:
Fireside Friday – Anatomy of a VPN – Part 1 of 3
April 25, 2025
In this webcast, we will start discussing the components that make up a VPN. We’ll talk about symmetric encryption, hashing, and Hash based Message Authentication Code (HMAC). We will also do a lab that shows the challenges you encounter when there are collisions in the hash space.
Recording:
Slide Deck:
Fireside Friday – Anatomy of a VPN – Part 2 of 3
May 02, 2025
In this webcast we will build on what we learned in the last Fireside Friday, in order to lay out the needed components for a VPN. We’ll talk about asymmetric encryption and setting up a secure channel over an insecure medium. We will also discuss the various methods available for initial authentication in a VPN.
Recording:
Slide Deck:
Fireside Friday – Anatomy of a VPN – Part 3 of 3
May 09, 2025
In the final installment of our VPN discussions, we will leverage the previous defined framework to understand various VPN technologies. We will discuss SSH, IPSec as well as TLS. We will also review recommended configuration options for each implementation.
Recording:
Slide Deck:
Fireside Friday – Authentication and Password Cracking
May 16, 2025
In this episode of Fireside Fridays we will discuss authentication and password policies. We’ll also look at how passwords are “cracked” discussing online and offline password cracking.
Recording:
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