NETWORK SECURITY ENGINEERING
FortiGate Firewall Guides
Practical FortiGate configuration, troubleshooting, VPN, firewall policy and network security guides for real-world environments.
Browse the FortiGate session troubleshooting guide, FortiGate SD-WAN configuration guide, or SSL deep inspection guide.
FortiGate Session Troubleshooting with Flow Debug, Sessions and Logs
Trace a FortiGate session through policy, routing, NAT, flow debug and logs to isolate why traffic is not behaving as…
FortiGate Packet Sniffer and Debug Flow for Real Troubleshooting
Use FortiGate packet sniffer and debug flow together to determine where traffic is lost and how the firewall processes it.
FortiGate SSL Deep Inspection: Design, Configuration and Troubleshooting
Configure FortiGate SSL deep inspection and troubleshoot certificates, policy scope, browser trust and inspection failures.
FortiGate SD-WAN Configuration for Dual ISP Failover and Load Balancing
Learn FortiGate SD-WAN configuration with a practical real-life example, step-by-step configuration, verification and troubleshooting.
FortiGate Policy Route Configuration with Dual ISP Real-Life Examples
Learn FortiGate policy route configuration with a practical real-life example, step-by-step configuration, verification and troubleshooting.
FortiGate LDAP Authentication with Active Directory: Configuration and Testing
Learn FortiGate LDAP Active Directory configuration with a practical real-life example, step-by-step configuration, verification and troubleshooting.
How to Add and Manage a FortiGate Firewall in FortiManager
Learn add FortiGate to FortiManager with a practical real-life example, step-by-step configuration, verification and troubleshooting.
FortiGate High Availability Active-Passive Configuration and Failover Testing
Learn FortiGate HA active passive configuration with a practical real-life example, step-by-step configuration, verification and troubleshooting.
FortiGate Remote Access IPsec VPN Configuration and Verification
Learn FortiGate remote access IPsec VPN with a practical real-life example, step-by-step configuration, verification and troubleshooting.
FortiGate SSL VPN Configuration with a Remote User Example
Learn FortiGate SSL VPN configuration with a practical real-life example, step-by-step configuration, verification and troubleshooting.
How to Troubleshoot FortiGate IPsec VPN Phase 1 and Phase 2 Problems
Learn FortiGate IPsec VPN troubleshooting with a practical real-life example, step-by-step configuration, verification and troubleshooting.
FortiGate Site-to-Site IPsec VPN Configuration with a Branch Office Example
A practical FortiGate site-to-site IPsec VPN guide with a branch-office topology, GUI and CLI configuration, verification steps, troubleshooting, and production…
Recommended FortiGate Guides
- FortiGate session troubleshooting
- FortiGate SD-WAN configuration
- FortiGate SSL deep inspection
- FortiGate packet sniffer and debug flow
What You’ll Find Here
- Configuration: deployment examples for firewall policies, VPN, SD-WAN, inspection, and routing.
- Troubleshooting: practical methods for sessions, packet flow, logs, and connectivity issues.
- Security: guidance for inspection, authentication, hardening, and operational reviews.
Choose the Right Guide
Use configuration guides for new deployments and troubleshooting guides when diagnosing sessions, routing, VPN, inspection, policy, or connectivity problems.