dynFreeDNSUpdate

Bash script to keep your dynamic DNS from freedns.afraid.org & Cactus VPN updated

Inspiration from: http://freedns.afraid.org/scripts/dnsactual.sh.txt

Client requirement

• wget

Installation

• Obtain your freedns key Follow these instructions to obtain your "Direct URL": https://freedns.afraid.org/guide/dd-wrt/ From now own we will refer to this URL as your "freedns' direct URL"
• Obtain your CactusVPN key Follow these instructions to obtain your "Validate IP link": https://www.cactusvpn.com/support/faq-smart-dns/#q14 From now own we will refer to this URL as your "CactusVPN's validation URL"
• Create a new folder under /etc/freedns

mkdir -p /etc/freedns/

• Download the DNS update script into your newly created folder; make the file executable

wget -O /etc/freedns/dynFreeDNSUpdate.sh https://raw.githubusercontent.com/hbjcr/dynFreeDNSUpdate/master/dynFreeDNSUpdate.sh
chmod +x /etc/freedns/dynFreeDNSUpdate.sh

• Modify your dynFreeDNSUpdate.sh Edit your /etc/freedns/dynFreeDNSUpdate.sh using your favorite editor and include the following changes:

• Replace the [freedns direct URL] placeholder (line #26) with your actual freedns' direct URL
• Replace the [CactusVPN validation URL] placeholder (line #27) with your actual CactusVPN's validation URL

• Execute the script for the first time

./etc/freedns/dynFreeDNSUpdate.sh

At this point you should be able to query your /etc/freedns/dynFreeDNSUpdate.log file to debug the result

• Add a new job to cron

crontab -e

• Add a new entry to execute the job every 30 minutes

0,30 * * * * sh /etc/freedns/dynFreeDNSUpdate.sh

There is no need to restart the cron service, the job will be executed in 30 minutes