Hello,I have an Orbi RBR50. I was told I need Ports 4500, 500 and 123 open to have something work on it (hard wired). Is there a way to open these ports? Do I need a new router? I need a T-mobile extender. It works plugged in directly to the modem, but my modem only has one outlet. It doesn't work from the router. Thanks!

CSrider wrote: I have an Orbi RBR50. I was told I need Ports 4500, 500 and 123 open to have something work on it (hard wired). Is there a way to open these ports? Do I need a new router? I need a T-mobile extender. It works plugged in directly to the modem, but my modem only has one outlet. It doesn't work from the router. Thanks! Would like to confirm "I was told" by looking at the setup information for this device/software? What is it? If a T-Mobile Extender works when plugged into the modem, it should work when plugged into the router. Which model of extender is this? (and what is the purpose of using an LTE product with the WiFi router?)

Thanks for the details. Let's review the setup instructions for this device: https://www.t-mobile.com/support/coverage/4g-lte-cellspot-setup-and-help The Orbi router does not block any UDP or TCP ports. Notice "No port forwarding is needed." The T-Mobile device uses these port to open connections, not receive connections. The next step is to verify that TCP ports are open. Setup suggests using Windows PowerShell to check ports 123.500, and 4500. Here's what happens on my PC that is connected to an Orbi RBR50 & Spectrum cable internet: So, "all good so far". In addition, Internet searches for this cell spot and 'port forwarding' turn up numerous responses that no port forwarding is required. Are you able to reproduce the same results with your Orbi router? When you look at the Orbi web interface, Attached Devices page, does the T-Mobile spot appear on the list and say that it is 'wired' to the router?

CSrider wrote: Thanks for your response! How do I put it on a DMZ? I looked it up, but I'm still unsure how to do that. On the Orbi RBR50, the web interface is used for this. See page 68 of the user manual: https://www.downloads.netgear.com/files/GDC/RBK50/Orbi_UM_EN.pdf This requires that you first learn the IP address of the T-Mobile device from the Attached Devices display. The manual does not mention this, but it is a good idea to take steps to ensure that the T-Mobile gets the same IP address every time the router is restarted (power outages, moving it around, updating firmware, etc.). This is done by entering the hardware MAC address (from the Attached Devices page) into an entry in the LAN Setup page. See page 73 of the manual. Most of us prefer that reserved IP addresses are not in the range of addresses used for the DHCP "pool". I see no problem with putting the T-Mobile device in the Orbi DMZ. I am simply confused as to what would keep it from working when connected to the router.

CSrider wrote: The only thing that shows as "wired" is Askey-AP5100W. I don't know what that is? The router itself? The Cellspot isn't listed. I tried a different cable, but that didn't help. I don't know how to check for the ports like you did. If the T-Mobile does not appear as 'connected', then it is not likely to function. Askey-AP5100W appears to be a WiFi system from Singapore. https://www.singtel.com/personal/support/broadband/routers-ont/askey-mesh That T-Mobile Setup Guide indicates that the Ethernet cable packaged with the device should be used to connect the Ethernet port on the back of the device (#5 with the yellow jack) to one of the LAN ports on the back of the Orbi RBR50. Normally, the product label will display the Ethernet hardware MAC address of the device in the form of hexidecimal numbers xx:xx:xx:xx:xx:xx That is the MAC address that should appear in Attached Devices https://www.t-mobile.com/support/coverage/4g-lte-cellspot-setup-and-help also says that the Internet LED should be solid green.

I see our messages "crossed" in the Internet. If you have good T-Mobile service now.... problem solved!

Orbi RBR50 Router Ports | NETGEAR Communities

12 Replies

microchip8
Master
Feb 07, 2024
Told by who?

What is this "something"?
plemans
Guru - Experienced User
Feb 07, 2024
Why not put the tmobile extender into the router's dmz? it'll open it up to everything online but that's on tmobile's device.
- CSrider
  Aspirant
  Feb 07, 2024
  Thanks for your response! How do I put it on a DMZ? I looked it up, but I'm still unsure how to do that.
  - CrimpOn
    Guru - Experienced User
    Feb 07, 2024
    CSrider wrote:
    
    Thanks for your response! How do I put it on a DMZ? I looked it up, but I'm still unsure how to do that.
    
    On the Orbi RBR50, the web interface is used for this. See page 68 of the user manual:
    
    https://www.downloads.netgear.com/files/GDC/RBK50/Orbi_UM_EN.pdf
    
    This requires that you first learn the IP address of the T-Mobile device from the Attached Devices display.
    
    The manual does not mention this, but it is a good idea to take steps to ensure that the T-Mobile gets the same IP address every time the router is restarted (power outages, moving it around, updating firmware, etc.). This is done by entering the hardware MAC address (from the Attached Devices page) into an entry in the LAN Setup page. See page 73 of the manual. Most of us prefer that reserved IP addresses are not in the range of addresses used for the DHCP "pool".
    
    I see no problem with putting the T-Mobile device in the Orbi DMZ. I am simply confused as to what would keep it from working when connected to the router.
CrimpOn
Guru - Experienced User
Feb 07, 2024
CSrider wrote:

I have an Orbi RBR50. I was told I need Ports 4500, 500 and 123 open to have something work on it (hard wired). Is there a way to open these ports? Do I need a new router? I need a T-mobile extender. It works plugged in directly to the modem, but my modem only has one outlet. It doesn't work from the router. Thanks!

Would like to confirm "I was told" by looking at the setup information for this device/software? What is it?

If a T-Mobile Extender works when plugged into the modem, it should work when plugged into the router.

Which model of extender is this?

(and what is the purpose of using an LTE product with the WiFi router?)
- CSrider
  Aspirant
  Feb 07, 2024
  Thanks again. The T-mobile tech had me plug the "Cellspot" directly into the modem. It worked fine. Unfortunately, the modem only has one ethernet outlet. I have to plug the router into the modem. (I have really fast Frontier internet) When the cellspot is plugged into the router (Orbi RBR50), it doesn't work. The T-mobile tech said I needed those listed ports open. My cell phone works very poorly at home (for calls) without it. Everything but call quality is fine.
  - CSrider
    Aspirant
    Feb 07, 2024
    Oops, forgot to include- Extender: Nokia 4G LTE Cellspot V2 Model SS2FII Femtocell Multiband SOHO

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Orbi RBR50 Router Ports