Category Archives: Network

FortiNAC Initial Inventory Discovery – Session 2

In case you did not see the previous FortiNAC post, we installed FortiNAC on ProxMox.  We went through the initial…

By Manny Fernandez

March 5, 2026

Basics of Wireshark – Session 4 – Where to Capture From

Now that we have Wireshark installed and somewhat configured, lets discuss limitations.  Although this article is not so much about…

By Manny Fernandez

February 25, 2026

Basic of Wireshark – Session 3 – Capture vs Display Filters

The Philosophy of Packet Analysis Troubleshooting isn't about looking at every packet; it’s about noise reduction. In a high-traffic environment,…

By Manny Fernandez

February 24, 2026

Basics of Wireshark – Session 2 – Ring Buffers, Color Schemes and CLI Tools

Ring Buffers A Wireshark ring buffer is a specific capture configuration used for long-term monitoring or catching intermittent network issues…

By Manny Fernandez

February 23, 2026

Basics of Wireshark – Session 1 – Setting up your Wireshark Install

I have always been interested in packet capture and packet level analasys.  I remember using Novell's LANalyzer and who could…

By Manny Fernandez

February 22, 2026

Deploying FortiWeb on ProxMox Server

I have learned from buiding my lab, that all products running on ProxMox require a little more hand holding than…

By Manny Fernandez

February 14, 2026

Understanding Netplan on Linux

I remember back in the old days when I ran Red Hat on my Servers and Fedora on my desktop. …

By Manny Fernandez

February 7, 2026

Adding Networks to you EVE-NG Installation

In EVE-NG, you may want to add additional NICs to you EVE-NG installation, whether that is a virtual NIC if…

By Manny Fernandez

February 7, 2026

Maximum Transmission Unit (MTU)

In networking, MTU (Maximum Transmission Unit) is the largest size of a packet or frame, specified in octets (eight-bit bytes),…

By Manny Fernandez

February 5, 2026

InfoSec Monkey Lab – Update

Getting a new server and setting up the new lab.  I will be creating a detailed post and possibly a…

By Manny Fernandez

January 26, 2026

Traffic Shaping with FortiGate Firewalls

In this post, we are going to look at a real-world customer use-case where they currently have a 50Mbps Internet…

By Manny Fernandez

January 22, 2026

MAC Sticky Ports on FortiSwitch

I have a customer that is using point-of-sale devices that are connected via wired Ethernet connections.  One of the counter-measures…

By Manny Fernandez

January 18, 2026

Syncing Sublime Text for macOS with iCloud

I have been playing with the free version of Sublime Text for macOS for years.  I mainly have been using…

By Manny Fernandez

October 21, 2024

IPv4 and IPv6 DHCP Options

DHCP Options When configuring DHCP in various system, you sometimes requires specific options such as when you configure Cisco Phones…

By Manny Fernandez

July 26, 2021

Built-In “IPerf” on the FortiGate Firewall

I happen to love iperf.  Iperf is a tool that has been around for a long time.  The idea is…

By Manny Fernandez

May 14, 2020

Deploying Grafana and Monitoring your AWS environment

Today I deployed Grafana in my lab environment.  I am hoping to to get this pulling from FortiAnalyzer in the…

By Manny Fernandez

April 1, 2020

VX-LAN over IPSec using Fortigate Firewalls

VXLAN is a tunneling protocol that encapsulates layer 2 frames into layer 3 UDP packets.  VXLANs allow you to create…

By Manny Fernandez

January 18, 2020

Installing Observium to Monitor SNMP enabled devices

Observium is a fantastic solution to monitor network devices.  It has a map where you can enter the physical address…

By Manny Fernandez

June 4, 2019

Fortigate DHCP and Microsoft Dynamic DNS

Remote branches that utilize Fortigate's DHCP do not update Microsoft DNS servers automagically.  Fortinet does not have a syncing feature…

By Manny Fernandez

May 22, 2019

UPDATED – Certificate Pinning you SSL VPN with Microsoft CA and Fortigate Forticlient Using ‘user’ certificates

Customer wanted to ONLY allow devices that are trusted devices (owned by the customer) to connect using the ‘Full Access”…

By Manny Fernandez

May 15, 2019

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  • At its core, IEEE 802.1X is a network layer... Full Story

  • In case you did not see the previous FortiNAC... Full Story

  • This is our 5th session where we are going... Full Story

  • Now that we have Wireshark installed and somewhat configured,... Full Story

  • The Philosophy of Packet Analysis Troubleshooting isn't about looking... Full Story