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If I understood you right you're able to connect to oline games of Warzone but you can't host ? It's a little bit difficult to see the settings on the screenshot 'cause it's very jaggy. Enter your local IP (for example 192.168.0.2) into the "send incoming calls to" - field and again in the field for "Multi-DMZ" . I think you done it that way. If Warzone isn't working find out which ports are needed for Warzone online gaming and add them using the "special-applications" button.