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How does a DDNS Service work |
- Every computer that connects to the internet must
have a unique number assigned to it to communicate. This number is
called your IP address (Internet Protocol Address).
- You can think of this number as your computers
phone number.
- When you connect to a web site, your computers
tells the web server you are connecting to what your current IP
address is. The web server uses this address to send back the web
pages you have asked for.
- Most computers that are connected to the internet
have addresses that constantly change or what is called a Dynamic IP
Address.
- Dynamic IP addresses change each time you
connect to your ISP, or every few days when your IP "lease"
expires and your ISP renews it.
- Having a Dynamically assigned IP addresses is
allot like having a phone number that constantly changed.
- You could easily call out, but if someone
wanted to call you, since you number was always different,
they would have to call information (411) to get your current
number.
- DDNS is a service that associates your
dynamically assigned IP address with a fixed name (ie:
fred_computer.licomuting.com).
- Assigning a name to your computer allows you
to "find" your computer on the internet.
- DDNS is commonly used to allow access your
computer remotely, or set up a web, FTP, telnet, mail, or similar
server on your machine using the static domain name.
- The service works by installing a small program
on your computer that constant reports its IP address to one of our
servers
- That server "connects" the current IP address
with account name you have selected.
- When you ask to be connected by name, we
lookup your current IP address and you are connected!
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