Dyn : Java Glossary

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Dyn

née DynDNS. A domain registration company that offers three free services and two cheap services primarily of interest to people who run web servers on their home machines.

Free domain names

that end with the letters:

ath.cx	dyn.com	dyndns.org	homeip.net	is-a-geek.net	mine.nu
dnsalias.com	dyndns.tv	homelinux.com	is-a-geek.org	myphotos.cc
dnsalias.net	dyndns.ws	homelinux.net	isa-geek.com	serveftp.net
dnsalias.org	gotdns.com	homelinux.org	isa-geek.net	serveftp.org
dynalias.com	gotdns.org	homeunix.com	isa-geek.org	shacknet.nu
dynalias.net	homedns.org	homeunix.net	kicks-ass.net
dyndns.biz	homeftp.net	homeunix.org	kicks-ass.org
dyndns.info	homeftp.org	is-a-geek.com	merseine.nu

Dynamic DNS (Domain Name Service) :
You can have a permanent domain name, even if you host it on your home machine that does not have a stable IP. It is up to you to fill in a form on the Dyn.org website any time your IP (Internet Protocol) changes. Dyn notifies the global DNS lookup of the change, and because of the short TTL (Time To Live) in cache of the DNS name, the change effectively propagates though the entire global DNS lookup system in a matter of minutes. Unfortunately, some of the world’s DNS servers run Windows, which fails to track updates. They won’t notice changes until they are periodically rebooted.
You can automate the process of detecting that your IP has changed and informing them. There is a HTTP GET protocol for informing Dyn of IP changes and third party software. that implements it.

You have to update your IP monthly, even just to keep it the same, or your account will be canceled as inactive.

To your customers, you look like a perfectly ordinary website. There is nothing special they have to do to access you. The main catch is, you are restricted to using one of Dyn’s free names such as mindprod.dyndns.org for you domain name.

The disadvantage of doing this is you are advertising your home IP to hackers which makes you more likely to be attacked.
Webhop
You can have a permanent domain name of the form above, even if you host your website at an ISP (Internet Service Provider) where it has a clumsy name like:
http://www.oberon.ark.com/~roedy
Instead, you can have a somewhat shorter name like:
http://roedy.homelinux.com
Custom DNS
is of interest to people who host their own servers at home. It lets you manage the DNS name services, using any domain names you want, not just their 38, with a web based configuration. This means you don’t need to become expert in that arcane art of MX records. You can manage subdomains of your domain. This costs $25.00 USD per year.
Domain Names
The Dyn people also sell traditional domain names ending in .bz .cc .cn .com .info .name .net .org .tv .co.uk .org.uk and .us for $15.00 USD per year though .cc .cn and .tv cost extra.

Router Dynamic DNS

My Dlink 604 router has a small computer in it smart enough to update a DNS server every time it is assigned a new face IP. The DDNS (Dynamic Domain Name Service) protocol handles updates to the IP automatically. All it needs in the server URL (Uniform Resource Locator), your user id, a password and the host name (the dynamically assigned domain). No notification software or manual updating is required, though you do need a separate DNS server. It works with server URL domain names of the form: xxx.dlinkDdns.com or xxx.dyndns.org. You must configure the Tools ⇒ Misc ⇒ Dynamic DNS section in the browser firmware.

DDNS
dlinkDdns.com account setup
DNS4Me
domain names
domains:DNS2go
IP
List of Dynamic DNS providers
no-ip.com
ZoneEdit

	You can get the freshest copy of this page from:	or possibly from your local J: drive (Java virtual drive/mindprod.com website mirror)
	http://mindprod.com/jgloss/dyn.html	J:\mindprod\jgloss\dyn.html
	Please email your feedback for publication, letters to the editor, errors, omissions, typos, formatting errors, ambiguities, unclear wording, broken/redirected link reports, suggestions to improve this page or comments to Roedy Green : . If you want your message, your name or email kept confidential, not considered for public posting, please explicitly specify that. Unless you state otherwise, I will treat your message as a letter to the editor that I may or may not publish in the feedback section. After that, it will be too late to retract it. If you disagree with something I said, please quote it and cite the web page where you found it, tell me why you think it is wrong, and, if possible, provide some supporting evidence. Threatening to kill me or spouting obscenities has yet to persuade me to change my mind.
	Canadian Mind Products
	mindprod.com IP:[65.110.21.43]
view Blog	Your face IP:[38.107.179.214]
Feedback	You are visitor number 11.

Dyn : Java Glossary

Free domain names

Dynamic DNS (Domain Name Service) :

Webhop

Custom DNS

Domain Names

Router Dynamic DNS