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@OopsieWoopsie
OopsieWoopsie / cloudflare.sh
Created October 23, 2020 23:43
Only allow CloudFlare connections to your web server
#!/bin/bash
# This script downloads the actual list of CloudFlare's IPv4/6 ranges
# and allows them to connect to the 443 port (HTTPS) and drops
# connections from other addresses.
# This is to prevent DDoS attacks and attackers from using the "Host"
# header to identify your server backend address.
# download the lists and remove the trailing newline
ranges4=$(curl -s https://www.cloudflare.com/ips-v4 | head -c -1)
ranges6=$(curl -s https://www.cloudflare.com/ips-v6 | head -c -1)
@wavezhang
wavezhang / java_download.sh
Last active April 10, 2024 16:21
download java from oracle without login
wget -c --no-cookies --no-check-certificate --header "Cookie: oraclelicense=accept-securebackup-cookie" https://download.oracle.com/otn-pub/java/jdk/12.0.2+10/e482c34c86bd4bf8b56c0b35558996b9/jdk-12.0.2_linux-x64_bin.tar.gz