ZyXEL Communications USG210 - What Could Go Wrong

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Create a Security Policy in order to view the testing result. Set Destination to be the
Internal Server IP address (192.168.1.33 in this example) and set Log type to be the
Log Alert.
Go to the ZyWALL/USG Monitor > Log, you will see [alert] log message such as
below. The Source Interface is the WAN1 or WAN2 interface which is handling the
least amount of outgoing and incoming traffic.
What Could Go Wrong?
If you cannot access the Internal Server, please check that the NAT configuration
matches the Internal Server IP address and Port number. If the NAT configuration is
correct, please check the system status of your Internal Server is up.