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Stuffe
Joined: 27 Jan 2015
Posts: 5
Location: Denmark
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 Posted: Thu Apr 16, 2015 4:31 pm Post subject: Router modem combination (newbie) |
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I am very much a newbie when it comes to this networking stuff, so this question might be very dumb, but I simply haven't found the answer anywhere.
I am able to open ports on my local router with this great miniupnp tool, but the external IP it returns seems to be the one my modem is giving my router. I can use this external IP port combination to connect back to my machine once the port has been opened, but I can't use it with my "outside"/internet ip. Is there a way to "chain" these upnp commands so I can open up my modem, or how are you supposed to get through there?
Example:
| Code: |
C:\Users\Stuffe>C:\Users\Stuffe\Desktop\upnp\upnpc-shared.exe -a 10.0.0.25 80 80
TCP
upnpc : miniupnpc library test client. (c) 2005-2014 Thomas Bernard
Go to http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
for more information.
List of UPNP devices found on the network :
desc: http://10.0.0.1:5000/Public_UPNP_gatedesc.xml
st: urn:schemas-upnp-org:device:InternetGatewayDevice:1
Found valid IGD : http://10.0.0.1:5000/Public_UPNP_C3
Local LAN ip address : 10.0.0.25
ExternalIPAddress = 192.168.1.11
InternalIP:Port = 10.0.0.25:80
external 192.168.1.11:80 TCP is redirected to internal 10.0.0.25:80 (duration=0)
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Now I can use 192.168.1.11:80, but not my "internet ip"[/code] |
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miniupnp
Site Admin
Joined: 14 Apr 2007
Posts: 1593
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| Posted: Fri Apr 17, 2015 8:35 am Post subject: |
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It looks like you are in a NAT over NAT setup. UPnP is NOT designed to work in such setup.
Why are you using 2 routers ?
I guess you ADSL/cable modem is including a router.
1) Either remove the 2nd router from your network and connect your computers directly to your modem/router
2) or configure your modem/router in "bridge" mode to remove the router function, so you can add your additional router.
_________________
Main miniUPnP author.
https://miniupnp.tuxfamily.org/ |
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Stuffe
Joined: 27 Jan 2015
Posts: 5
Location: Denmark
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| Posted: Fri Apr 17, 2015 1:26 pm Post subject: |
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| miniupnp wrote: | It looks like you are in a NAT over NAT setup. UPnP is NOT designed to work in such setup.
Why are you using 2 routers ?
I guess you ADSL/cable modem is including a router.
1) Either remove the 2nd router from your network and connect your computers directly to your modem/router
2) or configure your modem/router in "bridge" mode to remove the router function, so you can add your additional router. |
Alright thank you miniupnp.
Do you happen to know roughly how many % of internet users out there are on a similiar configuration where they can't use UPNP directly? Im developing some hobby software, thats why Im asking  |
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jasn
Joined: 23 May 2015
Posts: 2
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| Posted: Sat May 23, 2015 5:18 pm Post subject: |
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We have a cable modem connected to an separate firewall device, which then connects the rest of the LAN here to the internet. What's the easiest way to determine whether one has a NAT over NAT setup?
Thanks,
Jason |
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miniupnp
Site Admin
Joined: 14 Apr 2007
Posts: 1593
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| Posted: Tue May 26, 2015 7:46 am Post subject: |
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| jasn wrote: | We have a cable modem connected to an separate firewall device, which then connects the rest of the LAN here to the internet. What's the easiest way to determine whether one has a NAT over NAT setup?
Thanks,
Jason |
you'll know thanks to the subnet addresses use (RFC1918)
_________________
Main miniUPnP author.
https://miniupnp.tuxfamily.org/ |
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