FortiOS 8.0: Custom Tags, Dynamic Tag Address Groups, and Policy Tagging
Manny FernandezOverview FortiOS 8.0 introduces custom tags as a first-class organizational and operational construct across the firewall object model. Tags can...
Read More
Multicast Routing vs Multicast Forwarding on FortiGate
Manny FernandezThese are two distinct mechanisms on FortiOS, and conflating them is a common source of "my multicast isn't working" tickets....
Read More
FortiGate Replacement Messages: A Practical Deployment Guide
Manny FernandezReplacement messages are the pages and text blocks that FortiOS substitutes in place of blocked, quarantined, or intercepted content. When...
Read More
FIPS 140 Explained: Levels, Lifecycle, and Fortinet Support
Manny FernandezIf you sell into government, defense, healthcare, or finance, the phrase FIPS validated eventually lands on your desk. FIPS 140...
Read More
FortiGate and NTP 4.0: Dual-Homed Time Sources, Authentication, and Hardening
Manny FernandezAccurate time is one of those infrastructure fundamentals that nobody thinks about until it breaks. On a FortiGate, the system...
Read More
Securing the Gate with Security Profiles Series: Application Control
Manny Fernandez1. Introduction and Concepts Application Control is a FortiGate security feature that identifies and governs network traffic based on the...
Read More
Securing the Gate with Security Profiles Series: Web Content Filter
Manny FernandezWelcome to our comprehensive series on FortiGate Security Profile configuration and deployment named Securing the Gate with Security Profiles. Over...
Read More
FortiSwitch Troubleshooting Guide For FortiSwitches Managed by FortiGate (FortiLink)
Manny Fernandez1. Introduction and Architecture 1.1 What is FortiLink FortiLink is the proprietary management protocol used by FortiGate firewalls to discover,...
Read More
Kasm Workspace on Ubuntu Linux; How to deploy and configure VPN
Manny FernandezEven when running a VPN, your machine can leave artifacts of your connection on sites when you are doing OSINT...
Read More
Logging deep-dive on FortiGate Firewalls
Manny Fernandez1. Introduction and Scope This deployment guide provides a complete technical reference for designing, configuring, and operating logging on Fortinet...
Read More
Policy-Based Routing on FortiGate Firewalls – A Comprehensive Deployment Guide
Manny Fernandez1. Introduction Policy-based routing, or PBR, lets a FortiGate make forwarding decisions on attributes other than the destination address. Traditional...
Read More
Replacing a failed FortiSwitch in an Multi-Chassis Link Aggregation (MCLAG)
Manny FernandezReplacing a failed FortiSwitch in an Multi-Chassis Link Aggregation (MCLAG) pair requires a bit of care to prevent network loops...
Read More
Understanding and Tuning FortiGate Conserve Mode: A Practical Guide to Memory Thresholds
Manny FernandezIf your FortiGate has ever started dropping sessions during a traffic surge, or if you have logged in to find...
Read More
Quantum-Safe FortiGate: A Practical Guide to Post-Quantum Cryptography in FortiOS
Manny FernandezThe cryptography that protects your VPN traffic today was not designed with quantum computers in mind. RSA and elliptic-curve cryptography...
Read More
A Beginner’s Guide to FortiOS 8.0’s CLI Code Lab
Manny FernandezIf you have ever made a change to a firewall and then watched in horror as your connection went dead,...
Read More
A Practical Guide to Ping: Your First Tool for Network Troubleshooting
Manny FernandezWhen something on a network breaks, the first instinct of most engineers is to reach for ping. It is one...
Read More
A Practical Guide to DNSRecon: DNS Enumeration Done Right
Manny FernandezDNS is one of the loudest, most underappreciated sources of intelligence about an organization's infrastructure. Before anyone touches a port...
Read More
Understanding the Linux diff Command: A Practical Guide
Manny FernandezIf you have ever needed to know exactly what changed between two versions of a file, the diff command is...
Read More
ARP: The Quiet Protocol That Keeps Your Network Running
Manny FernandezEvery time your laptop talks to your router, a small but essential protocol runs in the background to make it...
Read More
FortiGate BGP Troubleshooting: A Practical Guide
Manny FernandezBGP issues on FortiGate firewalls usually trace back to a handful of common culprits: misconfigured peers, routing policy mistakes, or...
Read More
