Zte Z288L User Manual page 20

If you select Enable, the Port Mapping Settings will appear:
Source Port: Set the source port of the computer that provides services.
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• Destination IP Address: Specify a computer located at LAN to provide services.
Destination Port: Set the destination port of the computer that provides services.
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Protocol: Set which protocol will be applied by services.
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Comment: Type comment for the port mapping settings.
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Click Apply to add a new rule.
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ZTE Z288L User Manual