how do they ban an ip address when you are on a LAN network?

Question

I asked a question a few months okay about being banned from a site. and got a few good responses so here goes my new question.. i always thought i was running on a broadband conection but it is not it is a lan network (271 townhome community with satelite cable and internet service) now we all have seperate IP addresses when checked through IPconfig but when checked through an online ip checker(which is the one everybody says they ban) they are all the same..so they must have banned the ip i get when i do ipconfig because our nieghbor still belongs to the same site my daughter was banned from..is this possible(i know nothing of this stuff). if you have any other questions pm me and i will try to explain more

lol so many terms i cant understand it all..it is all just floating between my ears trying to stick..can i have some easy answers

my neighbor can sign into her account from my computer so the ip most likley isnt banned right..my daughter tried to rejoin once but after 2 hours it told her she couldnt as she had been banned and she used a different email and screenname..which is why iam trying to figure out how they banned(i even deleted all cookie before she tried

Answer 1

each person should have a unique IP from there router, the router itself will also have a IP adress give to it by your ISP, the routers IP will be the one the world sees and can ban, which in effect could ban all of you, they can still ban via the network cards or routers MAC address, which is unique to each card/router no matter what the IP addy, this can also be bypassed though via the 'Clone MAC Addy' in your router setup page.

another popular way of banning users is with your own registery, they add user names in ther and check when you log in for banned users.

Answer 2

Basically, every computer has it's own ID, your router also has it's ID but your IP address is issued to you by your ISP. This is done through identifying the line rather than the individual computer. In other words, whichever computer is acting as the server, if more than one computer is on a LAN, it is given the IP Address. Any computers, although with their own ID, that connect through that computer acting as the server will use the same IP address. It's like your family. They all have their own identity but the location is the same. Therefore, it doesn't matter which family member I write to, it will go to the same address. The head of the family (or whoever gets the mail) becomes the server and distributes the mail to the individual identities. Therefore, it's like having all post to your house and from your house, banned. As for your neighbour, his / her connection has a seperate IP address, just like your postal addresses are different. Your neighbour would still get mail if deliveries were banned to your house. The same applies with internet connections.

Answer 3

If an external IP is banned, then all lan IPs using that external IP will not be able to connect. "ipconfig /all" will show the lan IPs. To check your external IP and test your ports see here: http://canyouseeme.org

What probably happened is that the site banned your daughter's account name, not the IP. If the site banned the IP then theoretically your neighbor won't be able to connect since he has the same external IP. Sites can only see external IPs and they ban those - they won't usually see your internal lan IPs.

Answer 4

I believe you have a very limited understanding of the system.

There are private, nonrouteable IP addresses and public routeable addresses.

In a typical set up you have an ISP that feeds a terminal device (e.g. a modem). In these cases, the modem has an Ethernet hand off to the LAN. (T1 and T3 are a bit different but the concept for IP addresses remains the same) The hand off has a public IP address or WAN IP address. This feeds into the WAN port of a router and is the IP address for routing Internet traffic to the modem and to all downstream devices. This public IP address is the public identifier for all users of this network. (Think of it like the appartment address is 1259 Elm Road. Each appartment has a unique subaddress like Apt 100, Apt 101, etc but each has the 1259 Elm Road street address for public identification.)

The router has 1 WAN port and 1 LAN port (some have 4 LAN ports but let's live with my example here). The LAN port plugs into a network switch and the network switch can be connected to additional network switches. Let's assume your appartment complex has 4 network switches with 24 ports per switch or a total of 96 ports. One port receives the router hand off so there are a total of 95 potential pcs connected to this LAN. Let's say this equates to 95 tenants in the apartment complex. We need to distinguish between Apt A and Apt B. This is done by private or nonrouteable IP addresses which the router provides to the LAN user. In the simplest of networks, an IP address of the format 192.168.x.y is seen. The 192.168 values in the first 2 sets of numbers means the IP address is NOT routeable, and the router will not pass the IP address upstream (more on that below). The router itself may use an address like 192.168.1.1 for itself. This means that the subnet it is using in this simplest of cases is 192.168.1.0 with a subnet mask of 255.255.255.0. Since 192.168.1.1 is reserved for the router's private side port, the router can assign IP addresses from 192.168.1.2 to 192.168.1.255 to LAN IP addresses. Apt A may have 192.156.1.2, Apt B may have 192.168.1.3 etc. This gives each LAN device a unique address within the complex much like Apt A distinguishes that apartment from the others.

Now the router engages in Network Address Translation or NAT. When Apt A access a public IP address (e.g. the user types in www.yahoo.com in the browser) the router received the request, notes the private IP address that requested it and sends the request to the public Internet using the public IP address as the identifier. This is NAT. The reply comes back using the public IP address. The router identifies the reply to its request, allows the reply in and forwards the reply to the private IP address. This way the private IP address never goes to the public side. It conserves public IP addresses and it also protects the requestor.

In your case you are seeing different LAN IP addresses for each LAN user - and you should (much like Apt A is not Apt B and should not have the same identifier). You are seeing the same public IP address - and you should (much like 1259 Elm Rd is the street address for all appartments).

Answer 5

guy before me is right, you all have your ip for your computer, but because you are in lan, at internet all persons in that network have only one ip, and that is ip of lan network