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syrushcw 14Jul2008 21:26

Internal IP's on the internet
 
So when I was routerless for about a month or so when ever I booted up my computer I noticed my computer was requesting for a DHCP address and it was talking to a 10.x.x.x address. So I decided to delv a little deeper to see what was going on. I fired up ettercap to collect DHCP requests and this is what I got.
DHCP: [10.42.0.1] ACK : 24.181.183.57 255.255.254.0 GW 24.181.182.1 DNS 24.151.8.210
DHCP: [10.42.0.1] ACK : 24.181.183.57 255.255.254.0 GW 24.181.182.1 DNS 24.151.8.210
DHCP: [10.42.0.1] ACK : 24.181.183.57 255.255.254.0 GW 24.181.182.1 DNS 24.151.8.210
DHCP: [10.42.0.1] ACK : 24.181.183.57 255.255.254.0 GW 24.181.182.1 DNS 24.151.8.210
DHCP: [10.42.0.1] ACK : 24.181.183.57 255.255.254.0 GW 24.181.182.1 DNS 24.151.8.210
DHCP: [10.42.0.1] ACK : 24.181.183.57 255.255.254.0 GW 24.181.182.1 DNS 24.151.8.210
DHCP: [10.42.0.1] ACK : 24.181.183.57 255.255.254.0 GW 24.181.182.1 DNS 24.151.8.210
DHCP: [10.42.0.1] ACK : 24.181.183.57 255.255.254.0 GW 24.181.182.1 DNS 24.151.8.210
DHCP: [10.42.0.1] ACK : 24.181.183.57 255.255.254.0 GW 24.181.182.1 DNS 24.151.8.210
DHCP: [10.93.130.73] OFFER : 10.12.4.155 255.255.0.0 GW 10.12.0.1 DNS 24.151.8.219
DHCP: [10.12.0.1] ACK : 10.12.4.155 255.255.0.0 GW 10.12.0.1 DNS 24.151.8.219
DHCP: [10.93.130.73] OFFER : 10.12.42.34 255.255.0.0 GW 10.12.0.1
DHCP: [10.12.0.1] ACK : 10.12.42.34 255.255.0.0 GW 10.12.0.1
DHCP: [10.42.0.1] ACK : 24.181.183.57 255.255.254.0 GW 24.181.182.1 DNS 24.151.8.210
DHCP: [10.42.0.1] ACK : 24.181.183.57 255.255.254.0 GW 24.181.182.1 DNS 24.151.8.210
DHCP: [10.93.130.73] OFFER : 10.12.4.83 255.255.0.0 GW 10.12.0.1 DNS 24.151.8.219
DHCP: [10.12.0.1] ACK : 10.12.4.83 255.255.0.0 GW 10.12.0.1 DNS 24.151.8.219


Interesting huh? Well it gets even better. My IP wasn't even in te 24.*.*.* range.

sk0: flags=8843 metric 0 mtu 1500
options=b
ether 00:17:31:c1:d8:da
inet 96.x.x.x netmask 0xffffff00 broadcast 255.255.255.255
media: Ethernet autoselect (100baseTX )
status: active
So I searched all the IP's on ARIN and they are all owned by Charter, Newtown. So am I getting local IP's because cable broadband is just like a giant lan, I remember hearing that some but never develed to far into it.
Can some one tell me how this works?

GreenGrass 14Jul2008 21:32

Re: Internal IP's on the internet
 
This some kinda Denial Of Service attack? :/

syrushcw 14Jul2008 21:33

Re: Internal IP's on the internet
 
Nope just my computer listening not trans any packets

syrushcw 14Jul2008 21:35

Re: Internal IP's on the internet
 
Quote:

Originally Posted by syrushcw
Nope just my computer listening not trans any packets

I don't want my net to go down then I'll be lonely :cryin:
I'm just wondering how you can have private IP's on a WAN

XXxxImmortalxxXX 15Jul2008 04:47

Re: Internal IP's on the internet
 
Hello im sry this is offtopc but are you the owner of syruswow?

syrushcw 15Jul2008 05:14

Re: Internal IP's on the internet
 
No I'm not :-/


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