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Posted by Dan on April 14, 2000 at 01:20:38:
In Reply to: Slightly off topic... posted by Concerned Internet User on April 13, 2000 at 22:10:05:
Folks, I do networking (both inter and intranet) for a living, and there are actually TWO addresses that you are concerned with when you connect to the internet.
The first is the IP Address. Each IP address is unique BUT can be used by multiple computers - but never at the same time:
Joe and Bob both have the same ISP. Bob dials in and gets his IP address assigned by the server. We'll call it IPA. Bob disconnects from his ISP and Joe dials in. The server sees that Bob is no longer using IPA, and assigns it to Joe. Bob dials back in, and since Joe is still connected using IPA, the server assigns IPB to Bob this time.
This is done so that an ISP can only pay for 100 addresses even tho they have 500 customers - that way, it's much cheaper. The server that assigns the IP addresses when costomers dial in LOGS what customer had what address, and *when*. If you have someone's IP address and the time that a post was made, then their ISP can trace it in about 15 seconds by opening the log file.
The SECOND address in your computer is *utterly* unique. It's called a "MAC" address, and it's a string of hexidecimal infomation that is *hard coded* into the chips on your network card. Everytime you connect to the net, that information is logged by numerous servers across the net in the normal transmision of data.
In short, your MACHINE is 100% traceable at ALL TIMES if you are connected to the internet. And ISPs always require that whoever owns the account with them to be 100% responsible for the conduct of anyone using the account.
Dan
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