after some research I can configure it :
- create your account in OpenDns.
- install ddclient :
ddclient is a Perl based client used
to update DNS entries. This client
works with all of our services as well
as services provided by many of our
sudo apt-get install ddclient
when it starts to ask for parameters just click next and next ...
- now we have to configure 2 files, open a terminal and type the following :
sudo nano /etc/default/ddclient
# Configuration for ddclient scripts
# Generated from debconf on Mon Aug 2 12:39:39 CEST 2010
# Set to "true" if ddclient run Should Be Every time a new ppp connection is
# Established. This Might Be Useful, if You are using dial-on-demand.
run_ipup = "false"
# Set to "true" if ddclient Should run in daemon mode
# If tis is changed to true, run_ipup Must Be Set to false.
run_daemon = "true"
# Set the time interval Between the updates of the dynamic DNS name in seconds.
# This option only Takes effect if the ddclient runs in daemon mode.
daemon_interval = "300"
sudo nano /etc/ddclient.conf
# # OpenDNS.com account-configuration
ssl = yes
use = web, web = whatismyip.org
server = updates.opendns.com
protocol = dyndns2
login = username in OpenDNS <-----
password = 'key OpenDNS' <----- CHANGE THIS
(Name of the network you set up in OpenDNS) <-----
- and configure your DNS as describe JE2Tom in his post.