DynDns

Revision as of 19:00, 12 June 2008

Introduction

DynDns is one of the free(as in no cost) Dynamic DNS provider.A Dynamic Dns is a service that permit you to have your own address name (such as rails.homelinux.org/) so you can offer services such as SSH or web server(http://rails.homelinux.org/) while having a Dynamic ip...

The setup

I tried:

• updatedd: updatedd-wrapper doesn't have a rc.d mode so you need to create it yourseld
• ipcheck : doesn't work for me because it doesn't find my ip on my userspace pppoe interface(tun0)
• ddclient: comes with a rc.d script...that's the good one

It would be nice if the ppp daemon could call script when the ip changes...but as i don't know how to do it we will use the daemon mode of ddclient.

run this command in order to install ddclient:

cd /usr/ports/dns/ddclient && make config && make install

then you need to configure it: here's my config file:

daemon=1				# check every 300 seconds
syslog=yes				# log update msgs to syslog
mail=root				# mail all msgs to root
mail-failure=root			# mail failed update msgs to root
pid=/var/run/ddclient.pid		# record PID in file.
ssl=yes					# use ssl-support.  Works with

# ssl-library

login=GNUtoo					# default login
password=mypassword				# default password
#mx=mx.for.your.host				# default MX
#backupmx=yes|no				# host is primary MX?
#wildcard=yes|no				# add wildcard CNAME?
 custom=yes,                            \
 server=members.dyndns.org,             \
 protocol=dyndns2                       \
 gnutoo.homelinux.org

you can do your own copying the sample file to /usr/local/etc/:

cp /usr/local/etc/ddclient.conf.sample /usr/local/etc/ddclient.conf

and then editing it...

then we will need to execute the script when the internet comes up: add this to /etc/rc.conf:

ddclient_enable="YES"

then if you get insternet via ppp,pppoe,pppoa: create the ppp.linkup file with the following content:

alice:
 !bg /usr/local/etc/rc.d/ddclient restart

change alice to match the provider you defined in /etc/ppp.conf

BE CAREFULL...you have to wait some time between the time the internet comes up and ddclient is restarted