Book Image

Getting Started with FortiGate

Book Image

Getting Started with FortiGate

Overview of this book

FortiGate from Fortinet is a highly successful family of appliances enabled to manage routing and security on different layers, supporting dynamic protocols, IPSEC and VPN with SSL, application and user control, web contents and mail scanning, endpoint checks, and more, all in a single platform. The heart of the appliance is the FortiOS (FortiOS 5 is the latest release) which is able to unify a friendly web interface with a powerful command line to deliver high performance. FortiGate is able to give users the results they usually achieve at a fraction of the cost of what they would have to invest with other vendors.This practical, hands-on guide addresses all the tasks required to configure and manage a FortiGate unit in a logical order. The book starts with topics related to VLAN and routing (static and advanced) and then discusses in full the UTM features integrated in the appliance. The text explains SSL VPN and IPSEC VPN with all the required steps you need to deploy the aforementioned solutions. High availability and troubleshooting techniques are also explained in the last two chapters of the book.This concise, example-oriented book explores all the concepts you need to administer a FortiGate unit. You will begin by covering the basic tools required to administer a FortiGate unit, including NAT, routing, and VLANs. You will then be guided through the concepts of firewalling, UTM inside the appliance, tunnelling using SSL, and IPSEC and dial-up configurations. Next, you will get acquainted with important topics like high availability and Vdoms. Finally, you will end the book with an overview of troubleshooting tools and techniques.
Table of Contents (13 chapters)

Troubleshooting High Availability (HA)

Talking about high availability, we are able to divide this topic into two different aspects:

  • Troubleshooting HA clusters

  • Troubleshooting virtual clustering

Troubleshooting HA clusters

We can begin troubleshooting an HA cluster using the following steps:

  1. Apply a minimal security policy that allows to send traffic through the cluster and verify that the connection is working.

  2. We have to create a continuous network traffic through the cluster and then we can try to shut down the primary unit.

  3. Network traffic should flow with no interruption.

  4. Now we are able to restart the primary unit.

  5. We have to check the configuration on the FortiGate devices, to verify that it is the same on all the cluster units.

  6. Next step is to verify that all the interfaces are up and connected as required by the configuration.

Additional things to consider when troubleshooting an HA cluster are related to the risks of a split-brain scenario. The split-brain syndrome may occur when all of...