I was told that people that use cable and DSL Internet providers have a different IP address every time they log on.  Is this true?  I thought each computer had an IP address.  Would that also mean that the same computer using both cable and dial up providers would have different IPs, depending on which the person used to send an e-mail?
126701
Yup. \n\nWhat you've been told about sounds very much like Dynamic Configuration Host Protocol (DHCP). It's an Internet standard (specified in a standards track RFC and adopted by the Internet Engineering Task Force). It came about in part because the Internet was getting large enough that the 32-bit IPv4 addresses were beginning to run out. Partly because there have come to be a lot of devices on the Internet, and partly because of the way they were originally assigned (in class blocks, Class A, Class B, Class C, etc).\n\nThe IPv6 standard (if ever universally adopted) will cure much of this because IPv6 addresses are much longer (64 bits). This is enough to assign  every grain of sand on the planet its own IP address. Not yet, alas, but sometime. Maybe. \n\nRather than assigning each device a more or less permanent IP address (called a 'static' address), the DHCP idea is to 'lease' an address for a time (a day, a week, etc); usually renewal able. The idea is that not every computer requires access to the Internet at all times. Outside business hours, for instance. \n\nEvery device which is to participate in the DHCP scheme must have software installed to manage its end of the DHCP exchange, and there must be a DHCP server device to handle the central side of the DHCP leasing. And, of course, there must be some kind of physical data connection before DHCP can assign anything (Ethernet (10, 100, 1000 in the twisted pair cable group) and WiFi (a, b, g, n are the most important) are the best known). \n\nBecause IP addresses can be reused, this scheme has reduced  some of the demand for static IP addresses, and, more importantly, has substantially eliminated the requirement of half an hour's work configuring a machine for Internet use. When the computers can manage it themselves, humans can do other things. Especially when there are 4000 workstations to be configured.
279075
DSL and cable have to be compared on the basis of YOUR area to get a reasonable answer.  Cable tends to be faster for the same money, but if the cable provider doesn't have good operations, service outages can be a major problem.  DSL service outage problems can usually be resolved quickly.  Cable service outage problems tend to affect entire areas when they occur.  \n\nYou should talk with your neighbors about the reliability of the services they get (both DSL and cable).  For a list of providers in your area, check out www.dslreports.com  They also provide info about the services received by others from providers in your area.
363688
we're probably going to need some add'l information, such as are you connected to a home network (pc connected to router) or directly to your ISP (pc connected to cable/dsl modem) or dial-up.\n\nrouter:  log into the router and make sure it is set to DHCP so it "dynamically" assigns IP addresses to connected devices. on your PC go to START > SETTINGS > CONTROL PANEL > LOCAL AREA CONNECTION > TCP/IP and make sure your PC is set to "obtain IP address automatically". a reboot may be necessary.\n\ndirectly to ISP: you may need to check with them to see what your TCP/IP settings need to be. some assign static IP addresses vs. dynamic so you may need to hard-code your address they provide.\n\ndial-up: typically addressing resolves itself during your connection sequence. check w/ISP if it's not working.\n\ntry the TCP/IP thing on the PC, then the router if you are using one. if no luck, post some follow-up info on your post.\n\ngood luck!
396506
Well,\n\nBefore reading any of the below information, you need to be aware of some network basics.\n\nKnow the difference between a static IP address and a dynamic IP address. See each of the links for additional information about each of these terms. \nWhen on the Internet, it is up to your Internet Service Provider (ISP) to assign and give you your network address seen by the Internet. Additional details posted below. \nIf you're planning on designating and/or using a static IP address, you should be aware of how IP address ranges are handled and netmasks. See each of these links for additional information. \nChanging your Internet IP address \n\nModem users\n\nWhen connecting to the Internet, your ISP will assign your computer an address each time you connect. This means that often each time you connect you'll have a different IP address. If you're wanting to change your IP address, try disconnecting and reconnecting.\n\nBroadband users\n\nAlmost all broadband service providers will assign your computer or home network a static IP address. If you're connected to a broadband network and need to change your IP address we suggest contacting your broadband provider.\n\nChanging your home network IP address\n\nMicrosoft Windows users\n\nTo change or specify the IP address of your computer for your own local area network (LAN), follow the below steps. Keep in mind that if you're connecting to the Internet with a broadband connection, adjusting your network settings may cause issues with your broadband connection. Finally, if your home network is setup through a network router, that router could be assigning your computer dynamic IP addresses, and specifying a static IP address may cause issues.\n\nGet to the Microsoft Windows desktop. \nRight-click on My Network Places or Network Neighborhood and click Properties. \nRight-click on Local Area Connection and click Properties. \nClick Internet Protocol (TCP/IP) and click Properties. If this is not present, you'll need to install this protocol. \nIn the Internet Protocol (TCP/IP) Properties window, select "Use the following IP address" if not already selected and specify the new IP address you wish to use. While entering this data you'll also need to specify the subnet mask and default gateway. \nLinux users\n\nThe below information is for how to specify and adjust your network settings through the command prompt. Changing your network settings will require root access.\n\nGet to the command prompt. \nMove to the /etc/sysconfig/network directory. \nEdit the interfaces file and adjust your network settings in this file.
96551
Ok. Here is what I think is happening. Your router is assigning dynamic IP's to your PC' within the network. That should not cause any kind of trouble. \n\nHowever, If you want to assign static IP addresses to the computers, then there should be a setting within the router's configuration where it says "Reserve IP...."\n\nYou will have to enter the MAC Addresses of the 2 PC's and then reserve IP's. \n\nI hope that helps.\n\nYour router, also has an IP address, but that IP address will be assigned by your internet service provider. The router IP is generally dynamic and is governed by the DHCP servers of the ISP. If you want static IP on the router, you will have to contact your ISP and tell them that you want a static IP assigned to your connection. They may charge you more for that.
8317
The simplist would be to connect them to a network hub with an Ethernet cable, give each a static IP, turn on sharing and copy over the network.  You could also do the same with a cross-over cable. No additional software is needed.\n\nMany DSL or cable modems have built-in DHCP servers, so if you have ports available on your router/modem, you can use them and not worry with the static IP address.
535
DSL is a type of broadband connection.  It stands for Digital Subscriber Line, and is offered by traditional phone companies (wired, not wireless).  The signal travels thru phone lines and into your home or business.  A modem is connected to it so it can translate the signal into ditigal data and then is usually output via Ethernet.  Its main competitor (at least in homes)is Cable broadband.  The difference between the two is that cable generally provides faster bandwith (download/upload speed), but is less secure than DSL, which provides each user with a unique IP (Internet Protocol)address.  Most cable internet home subscribers are connected to a router with up to 255 other subscribers, making attacks and intrusions much more likely.
597511
The DHCP server at your ISP generates the IP address.  You are typing the correct commands to release/renew your IP address.  The IP address they issue is within a range of addresses on the network they have registered to be able to use.  You'll have to switch ISP's if you want to be on another network.
248537
If you are on a local network (meaning your two computers are connected to a Linksys or Netgear router, for example), it is possible that a virus on one computer can be transferred to the other via the network. \n\nAs for your second question, the simple answer would be "No". Say you opened up an e-mail that had an attachment with a virus in it. You open it and now your computer is infected. If you were to disconnect that computer from the Cable/DSL Modem and reconnect another one, the virus would not "transfer" over because you didn't open the e-mail from that second computer. This answer is based on the assumption that no local network exists in your home. \n\nHope I clarified this for you.
491520
They can log your externally exposed IP address.  This wont be the same address you see if you're behind a network router (linksys) or something.  If you'd like to know your IP they see, go to www.whatismyip.com.  If you leave a message or comment, if they're smart, they'd be able to associate your page hit with that message time and from then on out, thye'd know that IP address was you.  This might be a problem if you're using dsl, as thats a static connection, and your IP would always be the same.  However, with cable, it uses DHCP so your IP should change pretty frequently i blieve.
238624
My cable modem got so old that we lost our Internet.  Our ISP told us the modem was too old and no longer supported.  Our ISP (Time Warner) was the one that supplied us with the modem in the first place.\n\nDon't expect your ISP to notify you when they make changes in their network that cause your Internet to fail.
477101
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.
316612
It mean some other computer on the network has the exact same address as your computer.  Contact your Network Admin so he can you give another IP address for your computer.
454809
No.  My DSL is faster than anybody's cable I've ever seen.  Cable starts off fast, but slows down the more people in your neighborhood gets cable internet.  Because you have to share it.
113257
Does your router have an active internet connection. If you unpluged the cat 5 cable from your laptop and then connected it to the cable or dsl router you will need to reset the modem to reset the MAC address or you will not get on line.  After that I would check your security setting on both router and laptop and make sure they both match.
67869
I am not a Mac person, but I don't think that matters in this case. I assume you've got your DSL modem connected to the wall jack, and your 2 port router connected to the DSL modem. Can you connect to the internet if you connect your pc or Mac directly to the DSL modem? If this works and connecting through the router *doesn't* work, there are a few things to check. It could be an issue of the ISP knowing the MAC address of your pc and of your Mac, but it doesn't recognize the MAC address of the router. In the router configuration, probably under advanced settings, there should be an option for "cloning" a Mac address. If one or the other of your machines can connect to the internet when connected directly to the modem, it is the MAC address of *that* machine that you'll want to clone. To get the MAC address on a Windows box, click Start -> Run and type "cmd" to get to a command prompt. Then type "ipconfig /all" (without the quotes, of course). Copy down the "Physical Address" of your network card. Then enter this as the "cloned" MAC address on your router. It may be necessary to do a soft reset of the router at that point. Once it comes back up, the ISP's network will think that your router is in fact your PC, and everything should work just fine. At that point, you should be able to connect both computers to the router and all should be well. If not, while you have both computers connected to the router, see what IP address each has. If neither has an IP address (they should have private IP addresses, something like 192.168.1.x or 192.168.0.x), then in your router settings, you'll want to enable DHCP. If however, your router does not offer DHCP, then you'll need to do something like get an old PC (seriously...something like a 400Mhz will do just fine), install a 2nd ethernet card, and then install Smoothwall or IPCop on it. These will handle the DHCP stuff for you (in addition to providing you with an excellent perimeter firewall). In this case, your setup will go from wall to DSL modem to Smoothwall/IPCop box to router.
19296
if you are on diff ip networks, but same physical network, jumping a cable over will cause problems. try typing the ip adress of the other computer into your browser.\n\n&#92;&#92;10.0.x.x