> For the complete documentation index, see [llms.txt](https://deeper-network-inc.gitbook.io/deeper-connect-knowledge-base/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://deeper-network-inc.gitbook.io/deeper-connect-knowledge-base/atom-os-functions/security/customized-dns-rules.md).

# Customize DNS rules

<figure><img src="/files/z2kH2esheAAZoEEP1yc4" alt=""><figcaption><p>Custom DNS Rules</p></figcaption></figure>

* **Add a domain to the whitelist:** to bypass the ad and tracker blocking, please enter the domain without "<http://www>", "<https://www>", "/", subdomains, page tags, or any additional characters to avoid errors.
* **Add a domain to the blacklist:** to block access to certain websites, please enter the domain without "<http://www>", "<https://www>", "/", subdomains, page tags, or any additional characters to avoid errors.

<figure><img src="/files/qCXcQrdEk3WN3JBjdcU7" alt=""><figcaption><p>Disable DoH</p></figcaption></figure>

*Note: Please click the "**View**" to read the instructions on how to disable DoH. Otherwise, the DNS Ads Filter may fail to block ads effectively.*