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Issues opening a port on AX4200 ORBI RBR750

Nick_2021
Aspirant

Issues opening a port on AX4200 ORBI RBR750

Hello,

I have a Plex server app running on a QNAP NAS on a network. Everything works great on LAN, but I can't make other devices connect to it directly from the outside (over internet). Supposedly Plex/QNAP should open whatever ports they need on router via UPNP, but they don't. And no matter what port I'm trying to open manually (and force Plex/QNAP to use it) - it's not accessible from the outside.

 

Setup is the following: Verizon FiOS 1Gbps fiber  >> UTP-Cat5E-wired >> AX4200 ORBI RBR750 router >> UTP-Cat5E-wired >> QNAP NAS (static IP).

I had an hour long session with QNAP technician and he said "the port is not getting opened, so it's a router issue"...

 

To be fair, I initially used FiOS default router (Gateway FiOS Router FiOS G-1100-FT-FRONTIER) trying to make this work. I had a remote session with a Verizon tech and he couldn't figure it out either and blamed the router, so we ended up replacing the router with the same one. The issue remained.

So I then went ahead and got the ORBI mesh hoping that a router swap would help. It didn't. So I don't think it's a Netgear issue per se, but there's clearly something preventing my setup from being avail from the outside, and I'd REALLY appreciate if some bright mind can help me solve it. 

 

Router is 192.168.1.1 (no double-nat)

NAS is 192.168.1.212 (static)

By default Plex tries to use port 32400. I tried it (and a dozen other ports).

ORBI is on V3.2.18.1_1.4.14 firmware.

PC is a Win10x64.

 

Thank you,

Nick

Message 1 of 9
antinode
Guru

Re: Issues opening a port on AX4200 ORBI RBR750

> Router is 192.168.1.1 (no double-nat)

 

   "Router" has _two_ IP addresses.

 

   That looks like the IP address of the router's _LAN_ IP interface,
which proves nothing.  What is the IP address of the router's
WAN/Internet interface?  If you're worried about revealing secrets, then
the top half of the address, "a.b" out of "a.b.c.d", would satisfy most
of my curiosity.
ADVANCED > ADVANCED Home : Internet Port : Internet IP Address

 

   Is that the address which you're using for remote access?

   Plug that address into the form at: https://whois.arin.net/ , and see
if it is a public or private address.

 

> NAS is 192.168.1.212 (static)


   Terminology: A "static" address is configured on the device itself.
What you configure on a (DHCP server on a) router is a reserved dynamic
address, not a static address.  Either one should fix the address of a
device, but some implications are different.

 

> [...] no matter what port I'm trying to open manually (and force
> Plex/QNAP to use it) - it's not accessible from the outside.

 

   Actual port-forwarding rule?  Actual error message when you do what,
exactly?

 

   For the usual problems with port forwarding, see:

 

      https://community.netgear.com/t5/x/x/m-p/1859106

Message 2 of 9
Nick_2021
Aspirant

Re: Issues opening a port on AX4200 ORBI RBR750


antinode wrote:

>What is the IP address of the router's WAN/Internet interface?  
ADVANCED > ADVANCED Home : Internet Port : Internet IP Address

108.56.x.x - verizon's public adress. Rotates pretty often.

 


@antinode wrote:

>Is that the address which you're using for remote access?

>Actual port-forwarding rule?  Actual error message when you do what, exactly?

 


yes, plex dynamically picks up the public address (while using it's own port (with checkbox unchecked) or with the one I force it to). In the pic below I'm manually assigning port 32400 (Plex's default):

https://drive.google.com/file/d/1GCrAIfG2acmEpVPIspv3QKAQrarB6Z8B/view?usp=sharing

 

this is the port forwarding rule from ORBI setup:

https://drive.google.com/file/d/1z6DKDwJ7d6DdgbQ23byrzp1I-HxKPjca/view?usp=sharing

 


@antinode wrote:

>A "static" address is configured on the device itself.
What you configure on a (DHCP server on a) router is a reserved dynamic
address, not a static address.  Either one should fix the address of a
device, but some implications are different.

NAS has this IP set as static and ORBI has it reserved for NAS as well:

https://drive.google.com/file/d/1nh64MuKZoH_ByHXaSg7IYKc94dgHikqT/view?usp=sharing

 

this is https://canyouseeme.org/ trying to ping the port:

https://drive.google.com/file/d/1XV2GN1WEwVQM0lA3DHTRTCdQ_m7xrgzA/view?usp=sharing

 

Thank you for your input,

Best regards,

Nick

Message 3 of 9
antinode
Guru

Re: Issues opening a port on AX4200 ORBI RBR750

   I didn't spot any obvious problems in your configuration.

 

>       https://community.netgear.com/t5/x/x/m-p/1859106

 

   Did you try the tests in that list (particularly in item 3)?

 

> ORBI is on V3.2.18.1_1.4.14 firmware.

 

   Hmmm.  The latest I see is "V3.2.17.12_1.4.14".  Normally, if
everything seems right except the actual behavior, I'd suggest a
different/older firmware version, but I'd hesitate if I couldn't return
to the starting place.

Message 4 of 9
Nick_2021
Aspirant

Re: Issues opening a port on AX4200 ORBI RBR750

>> ORBI is on V3.2.18.1_1.4.14 firmware.

>Hmmm.  The latest I see is "V3.2.17.12_1.4.14".

I'm pretty sure it came with it OOB. I'm hesitant trying to go backwards. I doubt it's an issue with the new FW. As I mentioned, FiOS Gateway routers had the same issue. It does sound like an ISP block of some sort..

 

>1. Wrong external IP address
   IP is correct from what you can see.

 

>2. Bad port-forwarding rule
   Also, as you see - it seems correct. Pretty straightforward setup...

 

>3. Server not listening on the port-forwarding target system.
   It's the default Plex port. It responds to it internally within LAN.

 

>Can you access the server from a system on your LAN using the server's LAN IP address?
   Yes, as stated above the Plex server is working like a charm on LAN. All devices on LAN can play media from it using their respective apps (ios/android) or straight via browser page (IP+port). They play directly & at original quality, with no transcoding necessary.
Devices outside LAN, however, can still connect to it via their apps, but they get the message you saw in the screenshot about 'connection is not direct blah blah' and end up getting a transcoded 720p feed of 2mpbs (plex limitation) that's routed through some proxy I guess. Plex standard behavior.

 

>If that works, then, still from a system on your LAN, try using the router's WAN/Internet IP address. That should verify the port-forwarding rule(s) (and the "NAT loopback" feature of the router).
   Tried that: "This site can’t be reached" timeout.

 

>4. External influences:
>ISP blocking
   All the ports? I tried a multitude of ports... I might try talking to their support again.
>other firewalls
   I don't have any on LAN. Can't see any FW-related settings on ORBI either...

 

sigh...

Thanks for your input.

If you have any other ideas - shoot. 

Message 5 of 9
antinode
Guru

Re: Issues opening a port on AX4200 ORBI RBR750

> Tried that: "This site can't be reached" timeout.

 

   If you have all the addresses right, and the port-forwarding rule is
right, then, to me, that suggests a router firmware problem (port
forwarding, or NAT loopback) or a server problem.

 

> [...] FiOS Gateway routers had the same issue. It does sound like an
> ISP block of some sort..

 

   Or a server problem.

 

> >4. External influences:

 

   I would not expect external anything (ISP, or whatever) to affect
access from your LAN, even when using the router's WAN/Internet address.


   Being largely ignorant/innocent of Plex, I might try running some
other server (Web, FTP, SSH, ...) on the same system, and see how port
forwarding for that service works.  Or on a different system.  (Is the
problem with the ISP or the local server?)

 

> PC is a Win10x64.

 

   And speaking of firewalls, does Windows see this network connection
as Public (bad) or Private (good)?  Any other exotic Windows firewall
stuff?

Message 6 of 9

Re: Issues opening a port on AX4200 ORBI RBR750

You have posted your message in the section of this community given over to DSL Modems and Routers. (This is easily done, given Netgear's complicated community structure.)

Many questions apply to different types of device, so you might get informed responses here, but modem/routers and Orbi devices are very different product lines and technologies, with few people using both, so you might get more help, and find earlier questions and answers specific to your hardware, in the appropriate section for your device. That's probably here:

Orbi - NETGEAR Communities

Just another user.

My network DM200 -> R7800 -> GS316 -> PL1000 -> Orbi RBR40 -> Orbi RBS50Y -> RBS40V
Message 7 of 9
Nick_2021
Aspirant

Re: Issues opening a port on AX4200 ORBI RBR750

Hello Michael,

 

Thank you for your input. I'll try posting in ORBI community.

Though I don't believe the issue is specific to modem-vs-Orbi differences..

 

Best regards,

Nick

Message 8 of 9

Re: Issues opening a port on AX4200 ORBI RBR750


@Nick_2021 wrote:

 

Though I don't believe the issue is specific to modem-vs-Orbi differences..

 


No, but people over there are more used to the ways of the Orbi technology and you will find a lot more message traffic there.

 

DSL modem routers are a small and shrinking business for Netgear. Just count the number of messages.

 

 

Just another user.

My network DM200 -> R7800 -> GS316 -> PL1000 -> Orbi RBR40 -> Orbi RBS50Y -> RBS40V
Message 9 of 9
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