SIMPLE DNSMASQ ADBLOCK SCRIPT

This is a simple init.d script for OpenWRT devices I made for myself to block ads by routing (using firewall rules) all unwanted DNS traffic (ports 53, 853 and 5353) to a loopback address.

• Automatically creates firewall rules and sets up any external configuration.
• Handles personal blocklists.
• Only handles dnsmasq-based blocklist files, so there's no unnecessary parsing.
  • The script, by default, downloads notracking's blocklist, but any blocklist can work if it has the following format: address=/.../...

DEPENDENCIES

curl
ca-certificates
libustream-mbedtls 

HOW TO

Download the init.d script and place it inside the /etc/init.d/ folder.

curl https://raw.githubusercontent.com/1898Angelo/openwrt-dnsmasq-adblock/main/blocklist_update > /etc/init.d/blocklist_update

Call the start command on the script and if everything is working correctly, you can add the same line to /etc/rc.local to autostart the script on each reboot.

/etc/init.d/blocklist_update start

... UPDATE THE BLOCKLIST

Simply call the start command or, if the autostart line was added to rc.local, reboot the router.

... BLOCK PERSONAL/OTHER DOMAINS

Add any domain to /etc/__personalblocklist/DOMAINS; one per line.

reddit.com
twitter.com
...

... USE ANOTHER DNSMASQ-BASED DOMAINS BLOCKLIST

Point the $BLOCKLIST_URL variable to any other blocklist.

SOURCES

NoTracking's Blocklist: https://github.com/notracking/hosts-blocklists