Dynamic DNS or DDNS is a method of updating, in real time, a DNS to point to a changing IP address on the Internet. This is used to provide a persistent domain name for a resource that may change location on the network.
Many routers have built in DDNS Services but can be limited in the services which they update. If the Router supports a the service, or you are willing to pay or donate for a service, you should do this, it is faster and more reliable. In that case, there is no need to use a softwareside solution.
Software Dynamic DNS
FreeDNS.afraid.org is a free Service which is easy and uncomplicated to set up.
There are several options to enable automatic DDNS updating for this provider:
The package AUR.AUR is available in the
An example config file looks like this:
daemon=600 cache=/tmp/ddclient.cache syslog=yes use=web, web=checkip.dyndns.com/, web-skip='IP Address' ssl=yes ## Configuration variables applicable to the 'freedns' protocol are: # protocol=freedns ## # server=fqdn.of.service ## defaults to freedns.afraid.org # login=service-login ## login name and password registered with the service # password=service-password ## # fully.qualified.host ## the host registered with the service. # protocol=freedns, \ login=my-freedns.afraid.org-login, \ password=my-freedns.afraid.org-password \ myhost.afraid.org
To enable the systemd service:
systemctl enable ddclient
Another option is to:
- goto Dynamic DNS page on freedns.afraid.org
- add A record and select your prefered domain name
- copy link under Direct URL, it will be something like "http://freedns.afraid.org/dynamic/update.php?ZRRJZ...................bzo4Njc1M4DA"
- use crontab -e to enter new schedulled command:
*/10 * * * * curl -ks http://freedns.afraid.org/dynamic/update.php?ZRRJZ...................bzo4Njc1M4DA > /dev/null
To add the record of your IP to DDNS along with a network connection through the use with Netctl. You can append the following line to your netctl profile.
ExecUpPost='curl -ks http://freedns.afraid.org/dynamic/update.php?ZRRJZ...................bzo4Njc1M4DA'
DynDNS is another Dynamic DNS service.