Fortinet FortiGate-800 - Manual (Page 127)

Virus and attack definitions updates and registration Enabling push updates
FortiGate-800 Installation and Configuration Guide
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Figure 25: Push update port forwarding virtual IP
Adding a firewall policy for the port forwarding virtual IP
To configure the FortiGate NAT device
1 Add a new external to internal firewall policy.
2 Configure the policy with the following settings:
3 Select OK.
Configuring the FortiGate unit with an override push IP and port
To configure the FortiGate unit on the internal network
1 Go to System > Update.
2 Select the Allow Push Update check box.
3 Select the Use override push check box.
Source External_All
Destination The virtual IP added above.
Schedule Always
Service ANY
Action Accept
NAT Selected.