Network Security Support Engineer (NST)


Course Overview

In this course, you will learn how to diagnose and troubleshoot the most common networking and security problems in a Fortinet protected network security solution. In interactive break-and-fix labs, you will use tools, diagnostics, and debug commands to detect, isolate, and resolve problems related to the most commonly used FortiGate features, such as IPsec, routing, web filtering, HA, IPS, and more. These skills and this knowledge will give you an advanced understanding of how to support a network security solution based on FortiGate devices.

Who should attend

Networking and security professionals involved in diagnosing, troubleshooting, and supporting an enterprise security infrastructure using FortiGate devices should attend this course.


This course assumes advanced knowledge of networking, and extensive hands-on experience working with FortiGate.

You must have an understanding of the topics covered in the FortiGate Security (FORT-SECI) and !FortiGate Infrastructure (FORT-INFRA) courses, or have equivalent experience.

It is also recommended that you have an understanding of the topics covered in the Enterprise Firewall (FORT-ENTFIREWALL) course.

Course Objectives

After completing this course, you will be able to:

  • Set up a baseline for FortiGate and analyze the first steps to diagnose a FortiGate
  • Monitor process activity, diagnose conserve mode, and troubleshoot unexpected reboots and frozen devices
  • Analyze information in the session table and debug flow output
  • Troubleshoot session helpers
  • Troubleshoot common problems related to local, LDAP, and RADIUS authentication
  • Troubleshoot common FSSO problems
  • Troubleshoot FortiGuard and web filtering problems
  • Monitor an HA cluster and troubleshoot common HA problems
  • Troubleshoot and diagnose IPsec VPNs with debug and sniffer commands
  • Troubleshoot routing problems with debug and sniffer commands
  • Troubleshoot rerouting problems with debug commands
  • Monitor OSPF status and o troubleshoot common OSPF problems with debug commands
  • Monitor and verify the BGP status with commands and troubleshoot common BGP issues

Prices & Delivery methods

Online Training

3 days

  • on request
Classroom Training

3 days

  • on request



7 hours difference

Online Training Time zone: Eastern Standard Time (EST)
Instructor-led Online Training:   This computer icon in the schedule indicates that this date/time will be conducted as Instructor-Led Online Training.