====== ddclient ======


  wget http://cdn.dyndns.com/ddclient.tar.gz
  tar -xzvf ddclient.tar.gz
  cd ddclient-3.7.3/
  mkdir /etc/ddclient
  mkdir /var/cache/ddclient
  cp ddclient /usr/local/sbin
  cp sample-etc_ddclient.conf /etc/ddclient/ddclient.conf
  cp sample-etc_rc.d_init.d_ddclient /etc/rc.d/init.d/ddclient
  chkconfig --add ddclient
  cd ..
  rm -rf ddclient-3.7.3/


Now edit the /etc/ddclient/ddclient.conf file:

vim /etc/ddclient/ddclient.conf

so that it contains something like:

  use=web
  login=yourdndnslogin
  password=yourdyndnspassword
  server=members.dyndns.org,            \
  protocol=dyndns2                      \
  yourhost.dyndns.domain

Now start the ddclient daemon:

  /etc/init.d/ddclient start

You can check status and troubleshoot using:

  /etc/init.d/ddclient status
  /etc/init.d/ddclient stop

tail /var/log/messages