probe router wirelessly, double NAT
hawat.thufir at gmail.com
Sun Dec 29 09:51:18 UTC 2013
On Sun, 29 Dec 2013 08:45:31 +0100, Nils Kassube wrote:
> thufir wrote:
>> I'm having some trouble with vuze, so am looking at some networking.
>> The computer uses a wifi adapter to connect with the router. The
>> adapter is a bit unusual:
>> So the computer gets an IP address from the adapter, and the adapter
>> gets an IP address from the router. Presumably this is double-NAT?
> I had a look at the manual of your GWU627 and I think the device works
> as a bridge and you have single NAT from your router.
>> thufir at dur:~$ ifconfig eth0 Link encap:Ethernet HWaddr
>> inet addr:192.168.0.15 Bcast:192.168.0.255
>> thufir at dur:~$ traceroute 192.168.1.1
> 192.168.1.1 is a private IP address which is only used in your local
> network. Do you have a machine with that IP in your LAN? Or is it a typo
> and you meant 192.168.0.1 which seems to be your router?
>> traceroute to 192.168.1.1 (192.168.1.1), 30 hops max, 60 byte packets
>> 1 192.168.0.1 (192.168.0.1) 1.364 ms 6.244 ms 6.238 ms 2 * * *
>> 3 18.104.22.168 (22.214.171.124) 19.651 ms 21.628 ms 21.655 ms 4
>> rc2bb-tge0-4-0-5.vc.shawcable.net (126.96.36.199) 21.772 ms rc2bb-
>> tge0-13-0-10.vc.shawcable.net (188.8.131.52) 24.005 ms rc2bb-
>> tge0-13-0-6.vc.shawcable.net (184.108.40.206) 23.947 ms
> Your router tries to find the way to 192.168.1.1 via the public
> internet. That can't work because private addresses should not be
> reachable that way.
Exactly, the GWU627 is a bridge. My ip address is in 192.168.0.x, that's
what the bride provides.
http://192.168.0.1/Docsis_system.asp in firefox brings up the interface
for the Cisco DPC3825 DOCSIS 3.0 Gateway (router).
I **believe** that the DPC3825 gives out addresses in the 192.168.1.x
range, but I see it as 192.168.0.1 because the GWU627 is a bridge.
Is the above a correct understanding?
Basically, I want to probe the router.
When I ran 12.04 LTS earlier today, Vuze worked fine. Now that I've
installed 13.10, Vuze won't connect (0 users).
I don't see how it could be the router or ISP, but, still, want to try to
gather some data.
More information about the ubuntu-users