Unable to get external IP to work

[EternalKing]

Hey, would appreciate some help. I have the router from AT&T model: BGW320-500. I am unable to see the external IP on it. I enabled UPNP NX on the server.cfg as mentioned in other forum posts. I went ahead and did Port Forwarding to port 4000 and external port 24224 as shown in the server.cfg file I have to keep it the same, but when doing the enable default gateway it errors out and tells me I’m unable to “Failed to map the port on gateway”

Just to clear it out, I enabled the port 4000 on my AT&T router and this is the info I get from the command prompt

 

C:\Program Files (x86)\NoMachine\bin>nxserver –upnpmap

Local IP                   192.168.1.65

Gateway IP                 192.168.1.xxx

External IP                64.17x.x.x

 

C:\Program Files (x86)\NoMachine\bin>NXSERVER –upnpstatus

Local IP                   192.168.1.65

Gateway IP                 192.168.1.xxx

External IP                64.17x.x.x

Any help would be appreciated.

 

[Britgirl]

Hi, when you searched the forums, did you also find the article about how to connect over the Internet? And did you follow the tips there?

How to connect over the internet to NoMachine behind a NAT router
https://kb.nomachine.com/AR10R01099

“Failed to map the port on gateway” suggests that the port you used in the port-forwarding rule on your router could already already be in use. Go back to your router and change the external port number to, for example, 24222, the restart the nxserver (NoMachine settings -> Server -> Status -> Restart) or you can do it from the commandline. For safe measure also restart UPnP.

Open CMD as administrator and execute:

c:\ProgramData\NoMachine\nxserver\nxserver.exe --restart
c:\ProgramData\NoMachine\nxserver\nxserver.exe --upnpmap

Is it possible there is a double NAT in place? If so, you will need to map the ports on both routers. So Router A must map to Router B and Router B to the computer you want to access.

[EternalKing]

I’ve gone through everything you mention and although I can see the external IP the port is not “binding” to it so I’m unable to use it, in the section where it states failed to map the port on gateway it’s greyed out and I can’t change it either. unsure if there’s something I can do there. I only have the 1 router so it’s not double NAT. Unless there’s something I’m missing there.

[Britgirl]

Can you check your External IP and compare with what’s showing, for example, on whatismyip.com? If IP addresses are different, then that would indicate indeed a double NAT.

If it’s the same, I advice you to start again (remove old changes, basically to what you had before changing anything) and set Port Forwarding with for example 24222 (or other – but not 24224 which is used for UPnP which is what I’ve understood you’ve done).

[Author]

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