Skip to content

Instantly share code, notes, and snippets.

@robsonsobral

robsonsobral/cloudflare.sh

Forked from Manouchehri/cloudflare.sh
Created April 25, 2020 03:29
Show Gist options
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
  • Save robsonsobral/8dca45eab4307bf196a0bb6e4a0bc82c to your computer and use it in GitHub Desktop.
Save robsonsobral/8dca45eab4307bf196a0bb6e4a0bc82c to your computer and use it in GitHub Desktop.
Download ZIP
Allow CloudFlare only
Raw
cloudflare.sh
# Source:
# https://www.cloudflare.com/ips
# https://support.cloudflare.com/hc/en-us/articles/200169166-How-do-I-whitelist-CloudFlare-s-IP-addresses-in-iptables-
for i in `curl https://www.cloudflare.com/ips-v4`; do iptables -I INPUT -p tcp -m multiport --dports http,https -s $i -j ACCEPT; done
for i in `curl https://www.cloudflare.com/ips-v6`; do ip6tables -I INPUT -p tcp -m multiport --dports http,https -s $i -j ACCEPT; done
# Avoid racking up billing/attacks
# WARNING: If you get attacked and CloudFlare drops you, your site(s) will be unreachable.
iptables -A INPUT -p tcp -m multiport --dports http,https -j DROP
ip6tables -A INPUT -p tcp -m multiport --dports http,https -j DROP
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment