No, the Kindle already has an upstart script to re-load the iptable ruleset.
You just have to store yours where Amazon/Lab126 stores theirs.
Just keep in mind, that you can lock yourself out of the device with an error in the ruleset.
Which is why I didn't make them persistent.
Also -
Kindles (normally) never get re-booted - they just go to sleep.
Yes - that ruleset is old, but an update is a WIP:
https://www.mobileread.com/forums/sho...05&postcount=5