How to Install nsupdate.info on OpenBSD

nsupdate.info is a dynamic DNS service that allows you to dynamically update your IP address on a DNS server. In this tutorial, we will guide you through how to install nsupdate.info on OpenBSD.

Prerequisites

Before you begin, you must have the following:

• A working OpenBSD installation.
• Root user access.

Steps

1. First, ensure that your OpenBSD system is up to date by running the following command:

   sudo pkg_add -uU
   

2. Next, download the nsupdate.info package using the following command:

   sudo pkg_add nsupdate.info
   

3. Once the package is downloaded, you will need to create a configuration file by running the following command:

   sudo touch /etc/nsupdate.info.conf
   

4. Edit the configuration file by adding your nsupdate.info username and password using the following command:

   sudo nano /etc/nsupdate.info.conf
   

   Replace "username" and "password" with your actual nsupdate.info username and password.

   username=username
   password=password
   

5. Save the changes to the configuration file by pressing CTRL + X, then Y, then ENTER.

6. Create a script to update your IP address using nsupdate.info. Create the file using the following command:

   sudo touch /usr/local/bin/nsupdate.info.sh
   

7. Edit the script using the following command:

   sudo nano /usr/local/bin/nsupdate.info.sh
   

8. Add the following contents to the script, replacing "yourdomain.com" with your actual domain name:

   #!/bin/sh
   /usr/local/bin/nsupdate.info -d yourdomain.com
   

9. Save the changes to the script by pressing CTRL + X, then Y, then ENTER.

10. Make the script executable using the following command:

sudo chmod +x /usr/local/bin/nsupdate.info.sh

11. Finally, add the script to your crontab to run every 5 minutes using the following command:

sudo crontab -e

12. Add the following line to the crontab, replacing "yourdomain.com" with your actual domain name:

*/5 * * * * /usr/local/bin/nsupdate.info.sh > /dev/null 2>&1

13. Save the changes to the crontab by pressing CTRL + X, then Y, then ENTER.

That's it! Now, your IP address should update automatically on nsupdate.info every 5 minutes.

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