Your own address on the NET
IF YOU want to prolong the life of an old PC, the good news is that it
can be converted into a personal web server, file server or game server.
But doing so creates a new problem: How would other users (or even you) find
your PC over the Internet?
Of course, you can easily contact all your users and give out the IP (Internet
Protocol) address of your PC.
When you connect to the Internet, your ISP (Internet Service Provider) assigns
a temporary IP address to your PC, which looks something like 18.104.22.168.
But if you accidentally or intentionally disconnect, and later reconnect, the
IP address of your PC will change.
That means other users can no longer access your website or game server
because it now has a different IP address.
To avoid this problem, you can use dynamic DNS (Domain Name System), or DDNS
These services allow you to assign a domain name to your PC, such as
ahbeng.servegame.com, much like real websites.
Using dynamic DNS, you can maintain a website or a game server and not have to
worry about updating users when the IP address changes.
Free DDNS services are available from various DNS hosting companies (
www.no-pi.com www.dyndns.com http://freedns.afraid.org/ ).
Typically, all you need to do is sign up for an account, pick from a list of
domain names, download and run a DDNS program, and your PC now has a "real"
The DNS company retains the current addresses in a database, while the
provided DDNS program updates the service whenever the PC's IP address has
Your users only need to know the domain name for your PC, which will remain
A few broadband routers also have built-in support for DDNS, so users don't
even need to download any software.