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August 28, 2019

Technical Note: FortiGate / FortiManager Communications Protocol Guide, v6.2

  • August 28, 2019
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Description
The FortiGate / FortiManager Communications Protocol Guide, v6.2 is available as an attachment to this article.


Table of Contents

ChangeLog

Overview
Exceptions
Protocolcomponents
FGFM header
Keep-Alive messages
Customizing the Keep-Alive settings
FortiManager passive mode

FortiGate to FortiManager authentication
Tunneling
Tunnel setup details
Communication hardening
Protocol operation on FortiGate
Security concerns
Protocol operation on FortiManager

Topology scenarios
Scenario1: FortiGate has public IP address, FortiManager is behind NAT
Scenario2: FortiManager on a routable public IP address/FortiGate behind NAT
Scenario3: Both FortiManager and FortiGate have public IP addresses
Scenario4: Mixed topology
Scenario5: Both devices behind NAT

FGFM built-in recovery
Making changes to the FortiGate management IP address
FGFM recovery logic
Example