on a wnr2000 need to know if ports udp500, udp4500, and udp123 are open

[gwinn56]

how do i make sure ports udp500 , udp4500,and udp123 are open for a t-mobil outdoor antena

[DarrenM]

You would need to do some port forwarding.

https://kb.netgear.com/24290/How-do-I-add-a-custom-port-forwarding-service-on-my-Nighthawk-router

DarrenM