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Understanding IP address - what the hell?

by llewyn / May 16, 2010 10:40 AM PDT

I am trying to understand about IP addresses. My understanding is that everyone has one if you are on the internet.

If I run Belarc advisor, it reports these IP addresses:
1394 Net Adapter
NVIDIA nForce Networking Controller
primary Auto IP Address: 192.168.1.102 / 24
Gateway: 192.168.1.1
Dhcp Server: 192.168.1.1
Physical Address: 00:18:F3:88:4F:56

Networking Dns Servers: 68.87.68.166
68.87.74.166

Then I did a search on the internet for IP address. A web page told me that my IP address was 71.56.46.184.

So which of these is my real IP address, and what makes it so? Does the "main" IP address correspond to the router or modem or some other piece of equipment?

Thanks for your help!

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ip address
by bill012 / May 16, 2010 10:34 PM PDT

It appears you did this from your PC behind your router.

Unless you pay for it you will only get a single IP from your ISP. That is your 71.56.46.184 address.

Since there is only 1 ip address the device you plug into the modem or other device the ISP uses gets this IP. If you run without a router your PC will directly get the ip.

When you use a router the router pretends all the machines at your location come from the same address. In effect your machine has 2 addresses.

The 192.168.1.102 is your "fake" address. These are actually called private addresses and are used to reduce the actual number of ip used.

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re: ip
by JezusSaurusRex / May 19, 2010 7:20 AM PDT

bill102 said thoroughly just about all there is to be said. But not that I'm adding to the topic at hand; I would take that private information off the web. It may open you up to spam or other personal privacy invasion. Just a little warning.

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