how does an IP address be unique for every computer?
82485
IP's are assigned to clients by a service known as DNS (Domain Name Service), your ISP has a DNS client that connects to the closest DNS on its route to query for a free (re-usable, of course!) IP. when it finds one, it assigns it to you, and registers that IP with the DNS (so it is not 're-assigned' while you are using it!).\nThere are only 7 DNS in the whole world, and they manage to keep up the traffic of the whole internet, pheew, think about that hardware, sweet God!!!\n\nMoreover, IP's refer to a 'domain name'. right, the numbers encrypt an actual name. like, www.yahoo.com = xxx.XXX.xx.XXX . Thus, if you want your computer to have always a same 'domain name', you need a "static IP", something you have to pay the DNS services a lot of money for...
937681
IP address :  32 bits long (Ex 1010101010101010 .....32times)\nIts commonly written as octed (eg 10.12.4.3  i.e 8x4=32 bits)\n\nIP address is like ur telephone # which is unique across the globe(eg +91 9845012345 ) but instead of tel instrument u have a computer.\n\nHost name is the name of ur computer ( like ur name for the telephone # ).This may not be unique across the globe.However the combination of host name & the IP address is unique.\n\nDNS : Domain name service --- Ex . Its difficult to identify the person staying in ur apartment with his tel number especially when it is 32 bits long(IP address).You rather prefer addressing him by his name(host name).This particular server resolves/finds the IP address for a particular host (Like having table where u write name of the person against their tel number)
292328
Okay, the error "A Duplicate Name Exists on the Network" is given when two computers have the same "name" persay when you create a standard workgroup based network. You claim that none truly has the same name, but I find that hard to believe, it's possible, but it would be something I've never run into before. Not trying to call you stupid, and I apologize if this insults your level of expertise, I have to assume you know nothing in order to make sure I help you as much as possible. For an advanced answer and quick way to check if they truly have different names, go to the last paragraph.\n\nI'm going to assume you're using Windows XP. Open up "My Network Places". On the left hand side you'll see a menu, and one of the options will be "Create a Home or Small-Office Network" (NOT the wireless option one). Click through the wizard, selecting "This comptuer connects to the Internet through a residential gateway or through another computer." unless you know for sure it's something different. Click Next. On the next screen it'll ask for a Computer Description and Computer Name. MAKE SURE that the computer name is different for each computer. The description makes no difference. Click Next. On the next screen it asks for the Workgroup. Doesn't matter what you type in here, so long as you put in the same thing on every computer. I stick with the standard "MSHOME". Click Next, and on the next screen select "Turn ON file and printer sharing." Click Next, then Next again, and finally on the last screen select "Just Finish the wizard, I don't need to setup another computer, yada yada yada." Do this on each computer.\n\n\nADVANCED ANSWER: (For Windows XP or 2000) Right click on My Computer and click Properties (or go to Control Panel and then Select System). Click on the Computer Name tab up top. Check the "Full computer name" of each computer in question, and make sure they're unique. If they're not, click on the "Change" button. Input a unique computer name for each comptuer and make sure the workgroup is the same on every computer on the network, and click okay. You may need to restart your computer. If the problem still exists, you're beyond what I can help you with without actually being there in person.
881735
ya it is possible to have more than one ip address on one system.... it depends on the number of NIC's on ur system... NIC(Network Interface Card), each one ll have a unique IP address... for ur case one is the Realtek Ethernet card and the other being the inbuilt ethernet card on ur motherboard.
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Depending on the context, the source IP is the originating IP or your IP.  Sounds like you are talking about a firewall set up.
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It's damn simple. Just opt for "Full-Headers" rather than "Brief-Headers". Originating IP address will be disclosed to you automatically.\n\nRegards\n(Siddharth Razdan)
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One appears to be a complete IP address and the other is not. For the address to be complete there must be 4 numbers separated by dots (xx.xx.xx.xx).\n\nTypically, your computer uses one address to communicate with other computers within your local network (like your home or office) and shares a single address with computers outside your network (like on the Internet). This is done by your router or cable modem (assuming you're at home) by a process called network address translation (NAT).  On the router config page you often see a LAN and WAN address, with the WAN (wide-area network) address being the one for the internet connection to your service provider and the LAN (local-area network) address being the one used to connect to all of the other computers in your home or office. All of the computers in your local-area network will get addresses that are in the same "subnet" as the router.\n\nThere is no "difference" between one number and another as long as you're using an address which is valid on your network. The most important thing is that your local-area IP address is accompanied by the correct subnet mask. That's the one that usually looks something like 255.255.255.0. If you aren't sure what these mean, you need to talk to the network administrator or help desk for your internet service provider.
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Several possibilities:\n* You can stop the router from broadcasting the name of the network so that its existence won't be immediately obvious.\n* You can set a password for your router so that anyone who wants to connect will have to type in that password.\n* You can implement a MAC address filter so that only certain computers are allowed to connect. (A MAC address is a unique ID found in every network adapter. It will uniquely identify any computer.)\nAny or all of these can be used together or separately. Your router's documentation should explain how to do all these things.
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There are two types of IP address that your computer has, the Local IP address and its Internet IP address.\nThese are one and the same if you have a direct connection to the Internet, such as a dialup modem, or have only one computer plugged directly into some types of broadband modems.\n\nSo, since the question does not clarify which IP address you are looking for, I will answer how to find both.\n\nYour Internet IP address is how other computers on the Internet know where to find you, and how to communicate back and forth with your computer.\n\nYou can find this very simply by visiting one of the sites that the others mentioned, such as http://www.ipchicken.com\n\nMany times, if you are connected to the Internet through a corporate network or home network, you will also have a separate Local IP address (which is how your computer talks to other computers, devices, etc, on the network at the place it is actually plugged into, such as your home)\n\nIf you are running Windows 95, 98, or Millenium Edition, this can be found by clicking on the Start Menu, selecting Run, and typing "winipcfg" without the quotes, and hitting enter or clicking OK or Open.  \nAfter this is done a box will come up which will have a drop-down menu.  Select your modem or device you are connecting with, and it will show the "IP Address".\n\nIn Windows 2000 and XP, you would click Start, Run, and type "CMD" and click OK.\nA black screen will come up, with a blinking line.\nInside the black screen, you will need to type "ipconfig"\n\nThis will show your local IP address, such as the following:\n\n\nC:&#92;>ipconfig\n\nWindows IP Configuration\n\n\nEthernet adapter Local Area Connection:\n\n        Media State . . . . . . . . . . . : Media disconnected\n\n\n\nEthernet adapter Wireless Network Connection:\n\n        Connection-specific DNS Suffix  . : megapathdsl.net\n        IP Address. . . . . . . . . . . . : 10.20.1.108\n        Subnet Mask . . . . . . . . . . . : 255.255.255.0\n        Default Gateway . . . . . . . . . : 10.20.1.1\n\nC:&#92;>\n\nHere, this shows that my "Local Area Connection" (which is the network jack on my computer) is unplugged, but that my wireless connection has an IP address of 10.20.1.108 \n\nDoes this answer your question?
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Bit more complicated then that.\nThe name servers turn the names seperated by .(dot) into IP addresses.\nTheres a root nameserver that tells you the ip address of the top-level domain names like .com .net...\nThen the .com name server will tell you the ip address of the yahoo part in yahoo.com and yahoo.com can actually have a name server that will tell you games.yahoo.com for example.\nThese are sometimes called subdomains.\n\nBut that concept doesn't really get close to the actual workings of the internet. It is simply a protocol that runs on the internet like http.\nDomain names and ip address are interchangeable. The idea is that people have a harder time remembering 32 bit number.\nIP address is 4 numbers that range from 0-255 which are seperated by periods. Each number is a byte or 8 bits. The DNS simply turns a name in this IP address.\nHeres where things get complicated.\nYour computer has an IP address and sends "packets" to communicate with other devices on your network.\nRouters are responsible for knowing where to send the packet next, but all your computer has to know is if it should send the packet to the router or to something that is local or within it's "subnet". It knows that by having a subnet mask. 255.255.255.0 is often used as a subnet mask. This means that if the first three numbers are the same as my IP address then I'll send it to another computer localy. Like 192.168.2.3 is in the same subnet as 192.168.2.233, but 24.4.3.4 is not, so I'll let my router handle that data.\nNow that you know the basics let me throw you some extra concepts.\n\nMost home routers do something interesting which is called NAT. This simply means that it has an IP address assigned by your ISP and it shares it with all computers connected to it within your home. It then translates the address to the outside world so the outside world thinks it's talking to a single computer, but the router remembers whos talking to who, so it forwards the data to the right computer. It's like having the same mailing address, but when the mail arrives you have to hand it out to the right person.\n\nThis is all you need to know to set up almost any home IP based appliance.\nSo you see, it's not as simple as you though. I hope I didn't confuse you too much.
778661
It is hosted on different servers, we call them web-hosts.\nThese servers have 24x7 connection to the internet..so that websites can be accessed at all times. This is different from our home where we connect to the internet only when required. All the content of internet is distributed on diff servers..not on a single machine.\n\nwebsite addresses like yahoo.com and google.com are mapped using the DNS concept. read more about DNS here\nhttp://en.wikipedia.org/wiki/DNS
702677
1.IP address is usually dynamic.Check you IP\nin www.auditmypc.com. at different times.\n If it changes your IP address is dynamic.\n2.If static IP you cannot change it.Only your ISP can do it.
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The e-mail are being send through servers. There are programs that can trace back the e-mail sender, meaning that they can find the computers ip adress. There are more advanced programs that can even say the exact location (but cost a lot).\nBut this can't be done in general, because not all the e-mails come from a certain ip adress (i'm refering to those computers which connect to the internet by receiving a different ip automatically, though it's the same computer).
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A public IP address can be used to address a computer from outside a network; a private IP address is used to address a computer from within a network.\n\nFor example, if you use a router for your home network, it tends to have the address 192.168.0.1 or the like. The first two numbers -- 192.168 -- indicate this is a private address; only computers on the network, behind the router, can reach IP addresses in that group.\n\nA public IP address might be 70.232.43.168; if you type that into your Web browser ( http://70.232.43.168 ), and there is a Web server operating on that IP address listening on a default HTTP port, you'll see the Web site.
243886
There are databases that can be checked against to see where the IP address originates from.\n\nThey simply perform a check using the visiting IP address against these databases to get the location.
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IP address - Internet Protocol Address\nAn IP address is like the address of your computer on the internet. Yes, it can be changed. If your service provider has given you a dynamic IP service, it keeps changing every few minutes/hours. You can check your IP address by visiting a site such as www.whatismyip.com or just going to the Command Prompt and typing "ipconfig" and hitting the enter key. If your sevice provider has given you a static IP address, it does not change by itself, but you can manually change the IP address which appears on other sites (please note, it does not change the IP address of the whole machine, it only changes the IP address in that program) by using a proxy server. You can find proxies for free at sites such as www.proxy4free.com . Here is some additional info from wikipedia, visit wikipedia for more info, see the source url -\n\nAn IP address (Internet Protocol address) is a unique number that devices use in order to identify and communicate with each other on a network utilizing the Internet Protocol standard. Any participating device — including routers, computers, time-servers, internet FAX machines, and some telephones — must have its own unique address. This allows information passed onwards on behalf of the sender to indicate where to send it next, and for the receiver of the information to know that it is the intended destination.\n\nThe numbers currently used in IP addresses range from 1.0.0.0 to 255.255.255.255, though some of these values are reserved for specific purposes. This does not provide enough possibilities for every internet device to have its own permanent number. Subnet routing, Network Address Translation and the Dynamic Host Configuration Protocol (DHCP) server all allow local networks to use the same IP addresses as other networks elsewhere though both are connected to the Internet. Devices such as network printers, web servers and mail servers are often allocated static IP addresses so they can always be found.\n\nIP addresses are conceptually similar to phone numbers, except they are used in LANs (Local Area Network), WANs (Wide Area Network), or the Internet. Because the numbers are not easy for humans to remember, the Domain Name System provides a service analogous to an address book lookup called "domain name resolution" or "name resolution". Special DNS servers on the internet are dedicated to performing the translation from a domain name to an IP address and vice versa.
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If you have one computer and multiple user accounts on that machine, then yes, the IP address will remain the same.