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Forum Discussion
Port forwarding only works for some ports - RBK852
I have an RBK852 and have a few port forwarding rules set up, some of them work, such as ports 8080 and 8123 but others do not work such as 25565 and 443. All the port forwarding rules were set up ex...
death_cares wrote:I have an RBK852 and have a few port forwarding rules set up, some of them work, such as ports 8080 and 8123 but others do not work such as 25565 and 443. All the port forwarding rules were set up exactly the same.
Some ISPs block inbound traffic on port 443 (reference).
Another thing to verify is that you don't have Double NAT (if you do, port forwarding will still work but only if your ISP router also has port forwarding rules for the same ports from it to the Orbi router). You can check for Double NAT via the community faq instructions: https://community.netgear.com/t5/Orbi-WIFI-6-AX-AND-Wi-Fi-6E-AXE/Community-FAQ-My-Orbi-port-forwarding-doesn-t-work/td-p/1984296
I know double NAT isn't an issue as I only have the one router and I have other port forwarding rules that work.
The page for my ISP (Cox) doesn't say that they block the ports that I'm having trouble with but I'll contact them and see
Contacted my ISP and they said that only the ports listed on this page (https://www.cox.com/residential/support/internet-ports-blocked-or-restricted-by-cox.html) are blocked and all other ports should be fine to forward