Use the Whitelist Settings page to enable or disable a GRE traffic whitelist using the Web UI.

To enable a GRE traffic whitelist:
In the Web UI, choose Settings > Whitelists.
Select the Enable GRE Traffic Whitelist checkbox.
Click Update.
To disable a GRE traffic whitelist:
In the Web UI, choose Settings > Whitelists.
Clear the Enable GRE Traffic Whitelist checkbox.
Click Update. The following message appears:

Close the message.