falky4 Posted October 21, 2009 CID Share Posted October 21, 2009 General Question Here: Lately i've been trying to learn alot about computers and i thought it was common belief that the internal ip address of an computer never changes, that it is always the same. Could someone verify/correct me on this? Because i just read an article saying that your ISP (dont know what that is either please explain) changes your IP everytime you log back onto the internet. Please help :S Quote Link to comment Share on other sites More sharing options...
mudmanc4 Posted October 21, 2009 CID Share Posted October 21, 2009 The internal IP is generally set as dynamic within the router/ modem, this will but not always change each time the device requesting access to an outside network is turned on, or active. The ISP, or Internet Service Provider , also as a rule sends dynamic IP's to the modem, the modem will them "lease" out dynamic IP's to devices on the internal network. Business class connections, servers ect. would need a static IP, so it can be arranged with something humanly memorable in the form of a URL or, website name then is stored on a DNS Domain Name Server, which allows the request to be answered , and directed faster, without a huge worldwide search of every connected device on the internet. Each device is generally capable of being set up with a static IP from within the IP server, or router. Hope that helped, if you need more , ask Quote Link to comment Share on other sites More sharing options...
wknight40 Posted October 21, 2009 CID Share Posted October 21, 2009 Not to confuse you but the address that does not change on the computer is the "MAC" address. This is hard coded into the network card itself. Generally it is a unique number but it is possible for two cards to have the same number. Genrally this will not happen with in a local or most company networks though. Quote Link to comment Share on other sites More sharing options...
falky4 Posted October 21, 2009 Author CID Share Posted October 21, 2009 So could you connect to a computer through the MAC address? Quote Link to comment Share on other sites More sharing options...
wknight40 Posted October 21, 2009 CID Share Posted October 21, 2009 Just in my limited experiance yes and no. A DHCP server can be set to use the MAC address to reserve an IP address for that computer/network card only. With netware I have seen them use the MAC address to locate and connect a computer to the system. This may not be entirely true. Just what I have seen. Quote Link to comment Share on other sites More sharing options...
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