Dynamic DNS technology allows you to give your home network PC or server a permanent address on the Internet. Internet service providers change your IP address on a regular basis, but with dynamic DNS you can keep your domain name pointed to the current IP address of your home server or other devices.<\/p>\n\n\n\n
Sign up for a dynu.com account: Go to the dynu.com website (https:\/\/www.dynu.com\/<\/a>) and sign up for a free account. Provide the necessary information and create a new domain name (e.g., yourdomain.dynu.com) or use an existing domain if you have one.<\/p>\n\n\n\n You can create a script in Raspberry Pi<\/a> and setup a cron job to run every 5 minutes to keep your hostnames updated to the most current IP address.<\/p>\n\n\n\n 1. Create a directory to put the files into.<\/p>\n\n\n\n 2. Create a dynu.sh script with the command to update the IP address. For security reasons, you should use the MD5 hash<\/a> of your password. If you use the regular password, please be sure to URL encode any special characters in the password.<\/p>\n\n\n\n echo url=”https:\/\/api.dynu.com\/nic\/update?username=USERNAME&password=PASSWORD” | curl -k -o ~\/dynudns\/dynu.log -K –<\/p>\n\n\n\n 3. Make dynu.sh executable.<\/p>\n\n\n\n 4. Use a cron job to make the script run every 5 minutes.<\/p>\n\n\n\n Add the following to the bottom of the crontab:<\/p>\n\n\n\n *\/5 * * * * ~\/dynudns\/dynu.sh<\/p>\n\n\n\nRaspberry Pi<\/a><\/h3>\n\n\n\n
cd ~
mkdir dynudns
cd dynudns<\/code><\/p>\n\n\n\nnano dynu.sh<\/code><\/p>\n\n\n\nchmod 700 dynu.sh<\/code><\/p>\n\n\n\ncrontab -<\/code>e<\/p>\n\n\n\n