You have a carrier grade nat IP. This are not full working IPv4 addresses because your ISP use also a nat. You cannot simple open ports from outside in your router because the router before the IPFire blocks it.
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How can one tell they have a carrier grade nat ip?
Read up on it. Found it. Did not know it was a thing.
Because of the IP. 
Correct. Checked. I’m behind IPS’s central router, by Carrier Grade NAT (CGN). I requested public IP.
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2 posts were split to a new topic: I don’t seen any options for upnp in gui