Port open with UPNP, but finally not accessible

Hi Internet !

I have a Synology nas server with Minecraft on docker container using UPNP to make the server accessible over the internet but it seems not to work.

I have 2 apparals, one is the modem configured in bridge mode and the second is XR500 in router mode.

When I check in the advanced settings > UPnP. I see my IP server with the port 19132 open in TCP / UDP so normally the configuration should allow access to my container under docker and thus to the minecraft server, but it is not the case

On my nas

I tried to disable the UPNP service of the router and open the ports directly in the port forwarding tab, but it doesn't work either, is there any other configuration to do to make a machine accessible?

schumaku
Nov 04, 2020
Talk to your ISP, your Internet Service Provider. Request a public routable IPv4 address assigned.

3 Replies

schumaku
Guru
Nov 04, 2020
Your XR500 router does have public IPv4 address on it's WAN/Internet interface, or does your ISP (or in-house network service) deploy Carrier Grade NAT (RFC6598, or even worse private RFC1918) IPv4 addresses?

Compare the information shown on your router Web UI WAN/Internet port vs. a search for "what is my IPaddress"!

Is the XR500 connected behind another NAT router?

Any ISP side firewall provisions in place?
- Coyote570
  Aspirant
  Nov 04, 2020
  Effectively, the IP WAN address is private (10.x.x.x)
  My modem is in bridge mode, I have any other routers except the XR500
  
  So what should I do now ?
  - schumaku
    Guru
    Nov 04, 2020
    Talk to your ISP, your Internet Service Provider. Request a public routable IPv4 address assigned.

Forum Discussion

Port open with UPNP, but finally not accessible