DynDns

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

List of Dynamic DNS Providers

The following is a list of Dynamic DNS solution providers that support open source operating systems:

• [dhs.org DHS]
• [dyndns.org DynDNS]
• [dyns.cx DYNS]
• [hn.org HN]
• [no-ip.com No-IP]
• [zonedit.com Zone Edit]
• [easydns.com Easy DNS]
• [ods.org ODS]

Many of these services offer free dynamic-IP name resolution using pre-defined domain names as well as paid-for services allowing the use of personal (self registered) domain names. For example No-IP has a domain name of 'servebeer.com' that can host sub-domains for free such as 'mykillerwebsiteproject.servebeer.com'. The paid-for service allows the use of your own domain name such as www.mykillerwebsiteproject.com.

See Also

The open source firewall project called SmoothWall has in-built support for the leading Dynamic DNS providers.