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DescriptionThere have been reports of instability when using a Verizon Pantech UML290 3G/4G modem with a FortiGate. The modem sometimes disconnects and reconnects on its own. SolutionThe problem is caused by the modem switching randomly from 3G to 4G...

Description Topology Fortigate A -------Fortigate B -------ISP1 --> ISP2 -----ISP (N) --------Fortiguard Server Problem FortiGate A and B are in NAT mode. FortiGate B has no problem communicating with the Fortiguard Web filter server in Port 53 or Po...

Description This article describes how to load firmware and/or configuration backup from a USB drive Scope FortiGate 6.2+ Solution In scenarios where technical staff or a console cable are not available, it is possible to leverage a USB thumb drive t...

Description When 2 FortiGates are in HA Cluster, the “boot alternative firmware” option is not available via the GUI. To be able to use the “boot alternate firmware” option, it is necessary to break the HA Cluster (For example shutdown the Slave Fort...

DescriptionScenario: Multiple connections with multiple ISPs, policy routes are configured to route particular hosts/subnets on internal network to a certain ISP connection (port1, 2) Virtual IP: 1) SMTP Server 10.10.10.33 External IP = 1.1.1.33 Inte...