The Dynamic DNS service allows you to
alias a dynamic IP address to a static hostname, allowing your computer to be
more easily accessed from various locations on the Internet. With dynamic DNS
supported by a cable / ADSL router, you apply a DNS name for your server from a
dynamic DNS server. The outside users can always access your server using the
associated DNS name regardless of the WAN IP. More information about Dynamic DNS can
be found here.
The dynamic IP address must be updated periodically, usually within 30 days. Usually your
dynamic IP address is changed by your ISP regularly and the update is then propagated
by the cable / ADSL router automatically. But we noticed, that a so called dynamic
address stays static for longer than a month or more. In this case, the entry in the
dynamic DNS server (e.g. www.dyndns.org) ist dropped and your server is no longer
known in the internet. The solution for this problem is to use a "Dynamic DNS
Updater" which automatically updates the IP address even if the IP address has not
changed. An excellent "DNS Updater" is DirectUpdate, a shareware software from http://www.directupdate.net
DirectUpdate allows you to associate a dynamic IP address
with a static hostname, and to keep it updated whenever you log onto your ISP. Thus
you can have a home ISP account with a dynamic IP address for each login, and still
run a Web server, or other Internet service without permanent, dedicated
Advanced features of DirectUpdate include
Native NT service (NT4.0/2000 and XP)
Remote administration anywhere from the LAN / Internet.
Local & remote IP detection with user selection.
Update can be forced every xx days to prevent from being
Add support for "Wildcard" and "MaileXchanger"
Support of proxy server and proxy server authentication.
Basic administration using your browser on port 3280 by
Monitored log file size.
User selection of log options.
Fully implemented log file view.
Integrated help file (to be finished...)
Add a small tool (DUControl.exe) to start/stop the
KeepAlive option, to maintain your internet connection up if
Support IP detection via hidden (auto) proxy of ISP.
Support local IP detection with router direct query !
Download DirectUpdate from http://www.directupdate.net/download.html
and install the software on a NT/W2K machine directly behind the cable / ADSL modem.
This is important due the dynamic IP address can be looked up with a service such as http://checkip.dyndns.org/
First you have to connect to the machine running the DirectUpdate
Go to the first tab "Engine connection", and fill the field "connect to
Usually, the engine is running on the same machine, so select "localhost" (it's the
same as typing "127.0.0.1").
Then click on connect, if the engine is running on the machine,
you should be connected.
For security reasons, you have to provide a password. Anyway, by
default this password is blank.
A warning in the log file will be added, to tell you to change the password.
Allow HTTP administration on port 3280 (by default) using
DirectUpdate is a dynamic DNS
client updater. Its main goal is to periodically detect your IP
address and update it to your dynamic DNS