tmb13
By:
tmb13

Adding Cloudflare IP ranges to Cloud Firewall

June 13, 2017 344 views
Firewall Ubuntu 16.04

Hi, I tried to add Cloudflare’s IPs to my Cloudflare rule, but some ips are allowed but some other are not. Any idea why this could be happened?

Imgur

1 comment
  • Incidentally, Cloudflare's IP ranges evolve over time. You'll have to update it occasionally.

1 Answer
hansen June 13, 2017
Accepted Answer

Hi @tmb13

I've just tried to add every CloudFlare IP to the DO Firewall - and it works, but you have to wait about 1 second before hitting Enter-key otherwise it sometimes adds All IPv4.

But looking at the picture, it looks like there's a space or another spacial character in front of 104.16.0.0/12 (marked as red). Use the plain text lists instead.

If anyone else is interested in adding CloudFlare, then you can find the lists here:
https://www.cloudflare.com/ips/ - I would recommend using the plain text lists.

  • Ah yes, I was thinking to separate the list by spacing, instead of pressing enter key

Have another answer? Share your knowledge.