title: difference private IP and public IP
body: <p>Can anybody explain me why I got two different IP-addresses?</p>
  
  <p>So if I type on terminal ipconfig I get my network information where my Ip-adress is like <code>192.168.###.###</code>.
  So I know that this is in private IP-range (private IP).</p>
  
  <p>But if I for example google after myipadress I got as result something like this: <code>84.112.###.###</code>.</p>
  
  <p>And this is in my opinion the public IP-adress and after the website information the location of the ip-address (ISP) is about 3.3 km away from my current location...</p>
  
  <p>So what would you answer if somebody asks after your IP-address??? which one would you say to him?</p>
  
  <p>And the second question (or my own opinion) how can I determine my public IP without googling? What is technique behind that?</p>
  
  <p>I think thats easy for this kind of websites because they get of course your public IP in the IP-frame if you go on their website and therefore that is not a problem.</p>
  
  <p>And finally why do I have a private address at all? I know behind a network/interface there can be about 255 devices. In this case my modem must be able to grant up to 255 devices to the internet by giving a private(dynamic) address to everyone. The last 3 numbers of the IP-address can differ.</p>
  
  <p>Can I say that my wlan-modem is a router?</p>
  
  <p>I'm really confused about the IP-adresses can anybody help me?</p>
  
  <p>thanks before</p>