Re: Any ideas?

[Robert Graham <robert_david_graham () yahoo com>]

RFCs are not the law. You can break them. I use so-called routable/non-private (although not allocated) addresses for 
my internal network. ISPs route non-routable/private addresses. Specifically, they use such addresses as part of their 
management network: they assign private addresses in the 10.x.x.x space to routers, modems, etc. 

> From what I understand, cable-modem providers give a 10.x.x.x address to their cable-modems for management purposes. I 
> believe the last time I had a cable modem, I saw these 10.x.x.x addresses exposed on my Ethernet.

I run traceroute through my tethered cellphone, and find that the phone company assigns 192.168.x.x addresses to 
routers. nmap scans confirm other machines in that so-called "private" "non-routable" range.

I'm sure if you ping the 10.10.167.40, you'll find that it's only a couple hops away.


--- On Fri, 4/3/09, Richard Golodner <rgolodner () infratection com> wrote:

> From: Richard Golodner <rgolodner () infratection com>
> Subject: [funsec] Any ideas?
> To: funsec () linuxbox org
> Date: Friday, April 3, 2009, 2:44 PM
> When I do:
>
> Show IP Nat Translations, I see this coming from my
> wife's laptop.
>
>  
>
> Pro Inside global                      Inside local        
>  Outside local
> Outside global
>
> tcp 24.148.6x.xxx:2022    10.10.10.98:2022     
> 10.10.167.40:2967
> 10.10.167.40:2967
>
>  
>
>                 How does this 1918 address space route
> across the internet?
> 10.10.10.98 is her machine. Any ideas are welcome and there
> are no chat
> programs allowed on our (MY) LAN, so I have ruled that out.
>
>                 Thank you and have a great weekend, Richard
>
> _______________________________________________
> Fun and Misc security discussion for OT posts.
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