Why Do I have Two Different IP address' showing?

**English Noodles** · 08-12-2009, 10:54 PM

Okay, so I have been playing around looking for the best solution to spoofing my MAC address when I noticed something strange happening with my IP address.

If I do the following:

Run ipconfig/all from a Command Prompt window.

(click Start, then Run, then type cmd in the text box.)
Type in ipconfig/all in the Command Prompt Windows.

My IP address is listed as being totally different as the IP address that shows if I check here > IP Chicken - Whats my IP address? ip address lookup

Could someone throw some light on to the reason for this please?

Thanks.

**dirtydog** · 08-12-2009, 11:14 PM

erco has got you

**StrontiumDog** · 08-12-2009, 11:51 PM

EN, not sure, but are you in Thailand? If so you're probably seeing your IP and then the transparent proxy used by the ISPs here.

**baldrick** · 09-12-2009, 03:59 AM

is your second IP in the private ranges Private network - Wikipedia, the free encyclopedia

10.x.x.x
172.16.x.x
192.168.x.x

if you are connected to your appartments network to connect to the internet you will be behind a NAT with a private address and the WAN on their modem will have the public internet facinng IP

as for spoofing/cloning your MAC there was one windows program I used years ago where the trial allowed you to set an new MAC - if you are using linux it is just a simple config edit.

if you are attempting a "security audit" of local wifi APs maybe you should look at backtrack

**kingwilly** · 09-12-2009, 06:07 AM

Split personality?

**blackgang** · 09-12-2009, 06:54 AM

Two-Faced maybe.

DaffyDuck · 09-12-2009, 07:04 AM

Originally Posted by English Noodles

Could someone throw some light on to the reason for this please?

One's the IP address assigned to your computer by the router of your apartment, hotel, house, or whatever it is that distributes the internet to your computer, or any others in your vicinity.

The other one is the *real* IP address assigned to said router by the ISP. The *real* address is one that is actually a Fully Qualified IP Address, while the address your machine is assigned to is most likely a private network IP address.

**harrybarracuda** · 09-12-2009, 03:22 PM

You have one external IP address that the world sees.

Behind your router (i.e. inside your home) you have a range of internal IP addresses (you might have a desktop and laptop for example).

NAT (or Network Address Translation) hides these internal IPs when you go out browsing or whatever.

If NAT didn't exist, the world would have run out of IP addresses a long time ago, because each attached device in your house would need one

**blackgang** · 09-12-2009, 04:39 PM

Plus you should have a seperate one for each of your NICs so why only 2?

**English Noodles** · 09-12-2009, 05:08 PM

Originally Posted by baldrick

is your second IP in the private ranges Private network - Wikipedia, the free encyclopedia 10.x.x.x 172.16.x.x 192.168.x.x if you are connected to your appartments network to connect to the internet you will be behind a NAT with a private address and the WAN on their modem will have the public internet facinng IP

Yes mate, the IP address from the command prompt is 192.168.x.xxx While the one from IP chicken is 58.8.xx.xxx So what IP adddress will show up to a person whos computer is connecting with my computer, through MSN or Skype for example? Is it the 192 or the 58 number? As the 192 IP seems to stay the same but the 58 IP changes (which is what I want).

**baldrick** · 09-12-2009, 05:55 PM

the 192.168 IP is leased to your MAC address by the DHCP server running on the appartment router servicing the LAN side.( if you change your MAC address you will get a new 192.168 IP )

the appartments routers WAN side gets an address assigned to it by the ISP. it will normally change every time it reconnects.

Network address translation - Wikipedia, the free encyclopedia is done by the appartment router between the WAN and the LAN.

for most things people will see the IP address on the WAN side of the router - but skype is a slightly different issue because of the way which it performs NAT traversal , well beyond the scope of my knowledge to explain.

**English Noodles** · 09-12-2009, 06:38 PM

Ok, so if I set up two fresh user accounts (on windows), log on to a website and sign up. then sign back out and change user accounts, change my MAC address and then sign up to the same site using a different name and details, they can't identify me as being the same person or using the same computer? I think they send flash cookies on to the hard drive but this would be okay because it was on a different user account? What do you think?

**English Noodles** · 09-12-2009, 06:50 PM

Thanks for the assistance so far Balrick, it's all helping.

**dirtydog** · 09-12-2009, 07:09 PM

If it's just for trolling why not just use a different browser for each account and go through a proxy server.

**baldrick** · 09-12-2009, 07:27 PM

Originally Posted by English Noodles

og on to a website and sign up. then sign back out and change user accounts, change my MAC address and then sign up to the same site using a different name and details, they can't identify me as being the same person or using the same computer?

as the IP they will see is the WAN IP of the appartment router then you will appear to be the same if they are looking at IPs - changing your MAC address will only change the internal LAN address which they will never see.

**slackula** · 09-12-2009, 07:50 PM

Why do you want to spoof your MAC in the first place?

**Muadib** · 09-12-2009, 08:00 PM

Because he's a troll...

Doesn't matter if you change / spoof the mac address bound to the NIC in your PC... The world will see you via the WAN IP bound to your router...

DaffyDuck · 09-12-2009, 08:02 PM

Originally Posted by slackula

Why do you want to spoof your MAC in the first place?

Dude, consider the source -- Duh!

**slackula** · 09-12-2009, 08:46 PM

Originally Posted by Muadib

Because he's a troll.

Are you around in Phuket at the moment? If you are I have some interesting suggestions for your free time!

Originally Posted by DaffyDuck

Dude, consider the source

I don't have to listen to you because Butterfly aka Vint Cerf has convinced me that you are a nasty Mac user who knows nothing about networking and therefore all your information is wrong. I have proved it by posting pictures of an old Mac and an iron in another thread. The iron manufacturers clearly copied the design of the iMac so you are gay and a retard.

You are obviously retarded because you keep posting stuff that doesn't include installing Windows XP which we all know is the greatest operating system ever written.

Consider yourself pWned.

/how did I do?

**zemotion** · 09-12-2009, 08:49 PM

What's the difference between an iP and ISp for the non geeks?

**English Noodles** · 09-12-2009, 09:19 PM

It's not for trolling anything, shame Muadib and Daffy have come along to try and turn the thread to shit and not add anything of value, fucking trolls should be banned from this section. Thanks Baldrick and a few others for some good answers.

**zemotion** · 09-12-2009, 09:26 PM

My question hasn't been answered. I resent such snobbishness.

**dirtydog** · 09-12-2009, 09:31 PM

isp internet service provider, ie maxnet or true, ip Internet Protocol, a number assigned to you by your isp.

**zemotion** · 09-12-2009, 09:35 PM

Thank you sir.

**English Noodles** · 09-12-2009, 09:38 PM

Originally Posted by Muadib

Doesn't matter if you change / spoof the mac address bound to the NIC in your PC... The world will see you via the WAN IP bound to your router.

Yes but if I go to an outside connection then the other end could trace it was still the same computer being used unless I changed my MAC address.

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