How can I configure a service to run at startup

1. Edit /etc/rc.local file with this command:

   sudo vim /etc/rc.local

2. Add your script that you want to run on boot process there, for example:

   sh /home/ivan/iptables.sh echo 'Iptable Configured!'

3. Review the comments included in that file and make sure a exit 0 is at the end.
4. Save the file, and your script will run on boot process.

ref: How can I configure a service to run at startup