699 words | 4 minutes
I use cloudflare to proxy requests to the server hosting this site, as it adds protection such as DDoS and such. But if someone knows the IP address of the server, they can connect directly, bypassing the protections provided by Cloudflare. Cloudflare publishes the IP address range CIDR’s that they use on their website, but it is also accessible via an API call. Because I didn’t want to spend time typing the commands individually, I wrote a bash script, well I started with a bash script, then thought I should write it in Go, but after spending a couple hours messing around with Go, I decided to actually use bash, which was a lot easier.