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Thread ID: 57174	2005-04-25 18:25:00	Where Do IP Come From?	Christopher Washer (6975)	Press F1

Post ID	Timestamp	Content	User
348641	2005-04-25 18:25:00	Hello everyone, I'm fairly new to this whole networking thing and have never really understood the concept of IP Addresses. - What exactly do the numbers mean? - My IP address has been set to 192.168.1.x - is the above what other computers on the internet see? cos I have seen that number around alot; it's some kind of standard. Also 10.0.0.x. It would seem impossible for 2 computers to have the same IP address. - Next, is my internet IP address the same as my LAN one? Does it change each time I'm on the net? - All that being said, where does the IP address come from? I understand that nobody runs the internet itself and that people all around the world logging on and off could not realistically be facilitated by a system where all ISPs ask all ISPs whether or not an IP address is "taken". Another day: DNS and ports. Thanks for your help! 17 years of computing has only got me this far. - Christopher	Christopher Washer (6975)
348642	2005-04-25 18:54:00	ISP's get allocated a pool of IP's each, so there's no risk of an IP getting allocated to more than one person at a time. I think their numbers get asigned by the IANA (Internet Assigned Numbers Authority). Your network IP and ISP (Internet) IP will always be different.	Greg (193)
348643	2005-04-25 20:26:00	Hello everyone, [snip] - What exactly do the numbers mean? These numbers are the computers address, So other computers know how to find it. - My IP address has been set to 192.168.1.x - is the above what other computers on the internet see? cos I have seen that number around alot; it's some kind of standard. Also 10.0.0.x. It would seem impossible for 2 computers to have the same IP address. No, other computers on the internet can not see your 192.168.1.* range, - Next, is my internet IP address the same as my LAN one? Does it change each time I'm on the net? No your lan ip is not the same as your internet address, because the interent is another network. - All that being said, where does the IP address come from? I understand that nobody runs the internet itself and that people all around the world logging on and off could not realistically be facilitated by a system where all ISPs ask all ISPs whether or not an IP address is "taken". Your ip address is given to you by your ipaddress, by a dhcp server. Isp's have contol over this, because they actually have to buy ip blocks, e.g 203.173.*.* Another day: DNS and ports. Thanks for your help! 17 years of computing has only got me this far. - Christopher	ILikeLinux (1669)
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