Ad Blocking

SmartDNS can block ads by returning SOA for the corresponding domain name.

Note: If you're using OpenWrt with LuCI, please refer to OpenWrt's domain blocking configuration method.

Basic Configuration Method

Block ads via address /domain/# option, for example:
```
address /example.com/#
```
In the address option:
- /domain/ uses a suffix matching algorithm that includes its subdomains;
- # alone indicates both IPv4 and IPv6 blocking;
- use #6 to block IPv6 only;
- use #4 to block IPv4 only;
- use - to unblock this domain.
Block IPv6 only:
```
address /example.com/#6
```
If you want to unblock a particular subdomain:
```
address /sub.example.com/-
```

Using Community SmartDNS Ad-Blocking Lists

The community provides regularly updated ad-blocking list files for SmartDNS. You can directly use these ad-blocking list files, and add them to SmartDNS as an option with conf-file. Additionally, you can download and update these files periodically, then restart SmartDNS to take effect.

Download the configuration file to the /etc/smartdns directory:

wget https://github.com/privacy-protection-tools/anti-AD/blob/master/anti-ad-smartdns.conf -o /etc/smartdns/anti-ad-smartdns.conf

Modify the /etc/smartdns/smartdns.conf file to include the above configuration file:
```
conf-file /etc/smartdns/anti-ad-smartdns.conf
```

Ad Blocking Lists

Project	Description	Configuration File
anti-AD	Anti Advertising for smartdns	https://anti-ad.net/anti-ad-for-smartdns.conf

Non-SmartDNS List Format

For non-SmartDNS data, simple shell commands can convert it.

hosts Format

The following command converts the /path/to/hosts/file file (replace the path with your actual file) to the format supported by SmartDNS:

cat /path/to/hosts/file | grep -v "^#" | awk '{print "address /"$2"/#"}' > anti-ad-smartdns.conf

dnsmasq Format

The dnsmasq format is similar to SmartDNS, but not compatible. You can convert it using the following command:

cat /path/to/dnsmasq/file  | grep address | awk -F= '{print "address "$2"#"}' > anti-ad-smartdns.conf

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