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Linux.com: Getting Started with Dynamic DNS

Jul 20, 2006, 09:45 (0 Talkback[s])
(Other stories by Nathan Willis)

"Your ISP probably assigns your computer an IP address dynamically. It means one less thing for the both of you to think about, but it also puts you in a bind if you need to connect to your machine from the outside: you can't locate your PC amidst those of all the ISP's other customers. To overcome this obstacle, you can use dynamic DNS. Here's how to get started.

"The crux of the issue is that the domain name system was created with fixed name-to-IP mapping in mind, back in the mid 1980s. IP addresses were static, so the mappings between host names and IP addresses were static, too. But the early 1990s saw the rise of dynamically assigned IP addresses, thanks to protocols like DHCP. Thus some IP addresses were constantly coming and going, but the nameserver records were not being refreshed to reflect the changes..."

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