> For the complete documentation index, see [llms.txt](https://docs.gptboost.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.gptboost.io/security/methods/allow-only-ips.md).

# Allow Only IPs

**Allow Only IPs** is your fortress against unknown threats. available for the GPTBoost PRO plan, utilizing this policy adds an additional level of security to your LLM project. Some of the reasons why it's important:

* Protection Against Unauthorized Access: Restricts access to the LLM to only authorized production servers. This prevents external parties from attempting unauthorized access, enhancing overall security.
* Shielding Against Threats: Enable "Allow Only Given IPs" to protect from Distributed Denial of Service (DDoS) attacks. Simply permits access only to trusted servers, mitigating the risk of attacks from malicious IP addresses.

### How to set Allow Only IPs policy?

* Sign in to your GPTBoost dashboard and navigate to the `Security` section. \*
* Hit the `+ Add Policy` button
* Pick a meaningful and self-explanatory N**ame** for the policy. Choose the **Policy Type** - Allow Only Policy or Block Only Policy. Provide the IPs that you want to whitelist or block, depending on the policy type you selected.

<figure><img src="/files/mzjHFqhn3scKHqMQgiyq" alt=""><figcaption><p>Set Allow Onpy IPs Policy</p></figcaption></figure>

\* Keep in mind that the IP Security feature is available for the **GPTBoost Upgraded Plans**. If you're still on the free tier, simply log in to your GPTBoost account and navigate to `UPGRADE` button at the end of the menu.

### Add your additional level of security to the OpenAI Key

* Go to **OpenAI Keys**.
* Initiate `Edit` for the key you'll add the newly created Allow Only IPs rules.
* Instead of the Default - Open Policy, select the preferred one from your custom set IP policies.
* Click `Save`

<figure><img src="/files/ubBOVl948bZAlB9A0TCf" alt=""><figcaption><p>Add IP Policy to Key</p></figcaption></figure>

Voila! Enhanced security level achieved in a minute.&#x20;


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