FortiGate Advanced
Troubleshooting
Workshop
Elevate your FortiGate troubleshooting skills
from “I can manage it” to “I can fix anything.”
FortiGate firewalls are at the heart of your network security. When issues arise—performance drops, unexpected outages, VPN failures, or complex policy conflicts—you need more than basic administration skills.
The FortiGate Advanced Troubleshooting Workshop is an intensive, hands-on program designed for engineers who already know FortiGate and want to master diagnosing, isolating, and resolving complex problems in real-world environments.
Through guided labs, live demonstrations, and proven troubleshooting methodologies, you’ll learn how to use FortiOS built-in tools, logs, and debugs to quickly identify root causes and restore service with confidence.
Course Payment
Master Fortinet’s FortiOS & Take Your
Network Security Skills to the Next Level
Bring Your Laptop
Lunch and Snacks will be provided
This Course Include 5 Modules
Curriculum / Modules
Module 1: Advanced Troubleshooting Methodologies & System Resources
- Advanced troubleshooting approach for FortiGate environments
- Understanding FortiGate system resources (CPU, memory, sessions, daemons)
- Using CLI, diagnose, and debug tools to analyze system health
- Interpreting logs and counters for system-level issues
- Best practices to proactively detect and prevent resource-related problems
Module 2: Session Traffic Flow & Network Connectivity
- Deep dive into FortiGate session lifecycle and traffic flow
- Verifying interfaces, routes, and policies from a troubleshooting perspective
- Identifying and resolving issues in end-to-end traffic paths
- Using diagnose debug flow and packet captures for traffic analysis
- Handling common connectivity issues: drops, timeouts, asymmetric routing
Module 3: Security Fabric, Authentication & Identity (FSSO)
- Security Fabric components and their role in troubleshooting
- Identifying and resolving Security Fabric communication issues
- Firewall authentication flow and common problem patterns
- FSSO architecture and operation (agents, collectors, polling modes)
- Troubleshooting FSSO user mapping, group membership, and policy hits
Module 4: Security Profiles & High Availability Troubleshooting
- Troubleshooting issues caused by security profiles (AV, IPS, web filter, app control, SSL inspection)
- Detecting false positives vs genuine threats and tuning profiles
- Performance impact of security profiles and optimization techniques
- High Availability (HA) architecture and synchronization concepts
- Diagnosing HA failovers, sync problems, and cluster instability
Module 5: Advanced VPN & Routing Troubleshooting (IPSec, IKEv2, BGP, OSPF & More)
- Troubleshooting IPSec VPNs: negotiation flow, Phase 1/Phase 2 failures
- IPSec with IKEv2: specific behaviors, logs, and debug techniques
- Common IPSec & IKEv2 issues: mismatched parameters, routes, selectors, and lifetimes
- Troubleshooting dynamic routing protocols: BGP and OSPF on FortiGate
- Analyzing route propagation, neighbor relationships, and flapping routes
- Handling advanced scenarios combining VPN, routing, and security features
Learning Outcomes
By the end of this workshop, you will be able to:
Apply a structured troubleshooting methodology to FortiGate incidents.
Troubleshoot high availability (HA) clusters, failover events, and sync issues.
Analyze session tables, logs, and packet captures to pinpoint problems.
Troubleshoot interface, VLAN, and policy-related connectivity issues.
Identify and resolve performance bottlenecks (CPU, memory, sessions).
Troubleshoot IPsec and SSL VPN connectivity and stability issues.
Resolve routing and SD-WAN anomalies, including asymmetric routing and failover problems.
Use diagnose and debug commands effectively for traffic, routing, VPN, and system issues.
Investigate and fix issues related to security profiles (IPS, web filtering, application control, etc.).
Who Should Attend
This programme is ideal for:
Network / Security Engineers managing FortiGate firewalls.
Security Operations Center (SOC) analysts involved in incident response.
System Integrators and Managed Service Providers supporting Fortinet environments.
IT professionals planning to deepen their FortiOS troubleshooting expertise.
Prerequisites
Participants should have:
Solid understanding of basic FortiGate configuration and administration.
Familiarity with networking fundamentals (TCP/IP, routing, switching, VLANs).
Experience working with firewall policies, NAT, and VPNs on FortiGate.
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Book a free consultation — we’ll reach out shortly to understand your requirements and help you move forward.
Schedule a Free Consultation
Book a free consultation — we’ll reach out shortly to understand your requirements and help you move forward.
