is the IP address of LAN and internet different?

Question

is the IP address of LAN and internet different?

Answer 1

with nat, Internal (LAN) addresses are different do External (internet) IP addresses

Answer 2

The IP address assigned by your Internet Provider is the one which is sent each time you access a website.

Answer 3

You are having totally 5 classes of IPs

(Class A 1.0.0.1 to 126.255.255.254

Class B 128.1.0.1 to 191.255.255.254

Class C 192.0.1.1 to 223.255.254.254

Class D 224.0.0.0 to 239.255.255.255

Class E 240.0.0.0 to 254.255.255.254). out of that it is subdivided into two set that is the Private and public. Private IPs can be given for lan and public IPs can be provided for computers in the internet. These are the private ips that can be provided.

10.0.0.0 - 10.255.255.255

172.16.0.0 - 172.31.255.255

192.168.0.0 - 192.168.255.255 out of the total ips ranging from 0.0.0.0-255.255.255.255. Hope this part is clear.



Now if you are in an orgnizarion with more number of people it is not possible to provide public IPs for all desktops as the ISPs provides the orgnization with a limited number of public IPs depending up on your internet Bandwidth. So usually what the admins do is that they either setup a proxy server or use a facility called NAT(Network address transilation). in both the cases the internal IP is routed to go through this proxy server or NAT equipment. Proxy server or nat equipment actually converts your private IP to a public IP as it is said to do so by the System Administrator. So as your private IP is converted to Public IP you see your ip different in the internet. Hope the answer is clear to you.

Answer 4

multiply 255x255x255x255 and you will realize that we don't have enough IP numbers for every computer in the world.



So, only servers get true IP numbers while LANs use local IPs and are connected to the Internet using a gateway that translates the local address into an Internet address. An external site will see the address from the gateway.



By the way, because your computer doesn't have an Internet IP address it can't be used as a server on the Internet (if that is what you are trying to do) at least not easily.

Answer 5

Correct.

All of your internal LAN IPs are different, but the "world" sees you as one public IP, your 218.55... because it is the public routable IP on your routers WAN interface.

This is called PAT not NAT. NAT is one-to-one.

PAT is "one to many" (Port address translation). They work the same, but you don't have to put a NAT rule in place for each computer on your private LAN.

Answer 6

Yes...



Your router holds your IP address (218.55.xxx.xxx)



Your router uses DHCP to distribute new ip address' to computers plugged into it 192.168.1.1, 192.168.1.2 and so on and so forth



For all computers connected to your router everyone looking in (all remote websites/programs/applications) will only see 218.55.xxx.xxx for all computers and not your internal unique ip's 192.168.xxx.xxx



simple enough :)

Answer 7

yeah they are different. i am from china , i can use 192.168.x.y too , but it is not a external ip address

Answer 8

In the DOS box, type in "ipconfig /all" (no quotes of course)



Opposite IP Address it will give your LAN IP address.



Opposite DNS Servers, it will give your router IP address, and below that your internet IP address.



That internet IP address should match the one reported by the "IPlocation" site.