DDNS Updater

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Michael Bierman

• October 02, 2020 16:38
• Edited

I use Cloudflare to point to my home network for access to a few devices. I wrote this script to check my IP and update it on Cloudflare. Note, that because I'm using dual WAN I check the ISP and only update it if it is my primary ISP. Otherwise I skip the update.

Of course I run this at Firewalla startup and using crontab.

https://gist.github.com/mbierman/d4c6aac8e741fb0cbb289ce1899df59a

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  Joey

  • October 06, 2020 16:30
  • Edited

  While that's cool you made your own solution... Firewalla already provides Dynamic DNS as a built in feature.

  From the home screen of the app click the More icon. Then, click DDNS. Firewalla gives you a unique and persistent sub-domain address. This will always point to your current IP address for when you're out of your home network.

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  Michael Bierman

  • October 10, 2020 08:01
  • Edited

  Yes, I’m aware but I wanted a “friendly” name that was easy to type and remember and this is under my domain,

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  Aaron

  • November 10, 2020 18:27

  Not sure if it will solve all your issues, but you can create a CNAME entry under your domain and point it to the firewalla name.  

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  Michael Bierman

  • November 10, 2020 19:26

  Thanks Aaron! I hadn't considered that. Seems to work. 

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  Aaron

  • November 10, 2020 20:17

  TBH, someone had to suggest that for me as well.  :)  Glad it's working!

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  Michael Bierman

  • November 10, 2020 20:19

  Indeed. Bonus, Cloudflare allows me to use their proxy for a CNAME so I get some extra firewall protection with this method. That, plus not having to run my script (one less process) is great. Thanks again.

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  Shane Lord

  • May 10, 2021 03:15

  I'm actually interested in using this. CNAME forwarding won't work for me as I am using CNAME's for proxied applications as well.

  I've looked at running https://github.com/oznu/docker-cloudflare-ddns as well - but seems it can't get WAN access... still working that out.

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  Shane Lord

  • May 27, 2021 00:31

  OK - got the docker working. Will put a seperate post.

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