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Push updates through a NAT device Virus and attack definitions updates and registration
To enable push updates
1 Go to System > Update.
2 Select Allow Push Update.
3 Select Apply.
About push updates
When you configure a FortiGate unit to allow push updates, the FortiGate unit sends a
SETUP message to the FDN. The next time a new antivirus engine, new antivirus
definitions, or new attack definitions are released, the FDN notifies all FortiGate units
configured for push updates that a new update is available. Within 60 seconds of
receiving a push notification, the FortiGate unit attempts to request an update from the
FDN.
If available for your network configuration, configuring push updates is recommended
in addition to configuring scheduled updates. Push updates mean that on average the
FortiGate unit receives new updates sooner than if the FortiGate just receives
scheduled updates. However, scheduled updates make sure that the FortiGate unit
does eventually receives the latest updates.
Enabling push updates is not recommended as the only method for obtaining updates.
The push notification may not be received by the FortiGate unit. Also, when the
FortiGate unit receives a push notification it will only make one attempt to connect to
the FDN and download updates.
Push updates and external dynamic IP addresses
If the external interface of the FortiGate unit is configured with a dynamic IP address
(using PPPoE or DHCP), whenever the IP address of the external interface changes,
a SETUP message is sent to the FDN to notify it of the change. As long as this
SETUP message is sent, the FDN will have the most up-to-date IP address and the
next push notification is sent to this IP address.
Push updates through a NAT device
If the FDN can only connect to the FortiGate unit through a NAT device, you must
configure port forwarding on the NAT device and add the port forwarding information
to the push update configuration. Using port forwarding, the FDN connects to the
FortiGate unit using either port 9443 or an override push port that you assign.
Note: You cannot receive push updates through a NAT device if the external IP address of the
NAT device is dynamic (for example, set using PPPoE or DHCP).