Ran out of edit time, but wanted to add a quick note: - I didn't look at the presented source code close enough, but the code in the article does appear to upd

Ran out of edit time, but wanted to add a quick note: - I didn't look at the presented source code close enough, but the code in the article does appear to update the cloudflare IPs in a loop. So in the presented code it's not an issue to get out of date, but for anyone replicating this, would be something to consider. - Also of note, there is a reason security minded folks don't like using the IP address for identity, as the whitelist likely covers far more than necessary, and is treated with less scrutiny than something like a TLS certificate. For a personal blog though I don't think this is really a concern. But might be a consideration for a company with something to protect.