Category Archives: Network

23 July, 2026

EVPN Route Types: The Practitioner’s Field Guide

EVPN route types explained: master Types 1-11, NLRI fields, and DF election. Debug multihoming and MAC mobility on FRR, NX-OS, EOS, Junos, and FortiOS.

21 July, 2026

Wake-on-LAN from the FortiGate: Firing a Magic Packet with execute wake-on-lan

Use the FortiGate execute wake-on-lan command to send magic packets directly from the firewall. Configure CLI parameters, verify broadcasts, and troubleshoot endpoint settings.

20 July, 2026

Decoding SMTP Errors and Mail Failure Messages: A Practitioner’s Diagnostic Guide

Decode SMTP error codes and bounce messages with this diagnostic workflow. Identify transient vs permanent failures, read enhanced status codes, and fix mail delivery...

20 July, 2026

A little TCP story…

Understand TCP vs UDP explained through a simple analogy. Learn how the TCP handshake ensures reliability while UDP prioritizes speed for real-time applications.

20 July, 2026

HTTP Error Messages Decoded: A Practitioner’s Field Guide to Status Codes and What They Actually Mean

Master HTTP status codes troubleshooting. Decode 4xx and 5xx errors, diagnose FortiGate proxy issues, and use curl to fix network failures fast.

19 July, 2026

How CDNs Operate: A Practitioner’s Guide to Edge Caching, Request Routing, and Cache Control

Configure CDN edge caching, request routing, and cache control headers. Learn to delegate DNS, set origin rules, and validate cache hits with CLI tools.

14 July, 2026

The Different Types of Networks: A Practitioner’s Field Guide

Classify types of networks by geographic scale and topology. Learn how PAN, LAN, WAN, and mesh designs impact your security and routing decisions.

24 June, 2026

Power over Ethernet Standards Decoded: Matching PoE Types to the Devices That Need Them

Decode Power over Ethernet standards and match PoE types to devices. Learn to calculate PoE budgets and configure FortiSwitch ports to prevent device reboots.

23 June, 2026

What Is EVPN and VXLAN? A Practitioner’s Primer

EVPN and VXLAN explained: learn how the control and data planes work together in overlay networks. Understand VTEPs, VNIs, and where each technology falls...

22 June, 2026

Deploying NetFlow and sFlow on FortiGate (FortiOS 8.0) for Network Traffic Visibility with Cacti and FlowView

Configure NetFlow and sFlow on FortiGate FortiOS 8.0 to export traffic data. Learn to set up Cacti with FlowView for accurate network visibility and...

22 June, 2026

Deploying Cacti with NetFlow Support on Ubuntu Linux: Configuring Cisco, Fortinet and Juniper for Netflow

Deploy Cacti NetFlow configuration using the FlowView plugin on Ubuntu. Configure Cisco, Fortinet, and Juniper devices to export flow data for traffic analysis.

9 June, 2026

The Complete Guide to Ethernet and Fiber Cabling: Categories, Uses, and Limitations

Compare Ethernet and fiber cabling categories to select the right cable. Learn CAT speeds, fiber types, and distance limits to avoid network errors.

30 May, 2026

A Practical Guide to Ping: Your First Tool for Network Troubleshooting

Master ping command troubleshooting. Learn to read ping output, interpret TTL and packet loss, and use flags to diagnose network connectivity issues.

16 May, 2026

ARP: The Quiet Protocol That Keeps Your Network Running

Learn how ARP works to resolve IP to MAC addresses. Inspect the ARP cache, troubleshoot connectivity issues, and mitigate ARP spoofing attacks on your...

31 March, 2026

RFC 8805 – Self-Published Geo Location Feeds

Learn how to implement RFC 8805 self-published geolocation feeds. Publish accurate IP location data via RDAP to fix stale geo-database errors and improve security.

21 March, 2026

Monkey Bites – Creating a VLAN (Tagged) interface on macOS

Learn how to create a VLAN interface on macOS using networksetup. Configure 802.1Q tagging for persistent network segmentation that survives reboots.

21 March, 2026

Decoding the Alphabet Soup: A Guide to macOS Network Interface Naming

Understand macOS network interface naming conventions like en0 and lo0. Learn to map BSD names to hardware using networksetup and scutil commands.

5 March, 2026

FortiNAC Initial Inventory Discovery – Session 2

Configure FortiNAC inventory discovery for FortiGate. Set up SNMPv3, API keys, and admin accounts to sync switches and enable NAC policies.