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 /
- 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
- 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 machine:"
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)
DirectUpdate is a dynamic DNS
client updater. Its main goal is to periodically detect your IP
address and update it to your dynamic DNS