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Issues with Port Forwarding, DMZ, and Firewall.

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Issues with Port Forwarding, DMZ, and Firewall.

Setting up port forwarding has moved to the Xfinity website.  Since then I can not enable port forwarding to devices, even with IPv6 completely disabled (why is this a thing???).

 

An alternative is to set up a DMZ.  It does not work both on the Xfinity web site and the gateway's internal configuration.