> ## Documentation Index
> Fetch the complete documentation index at: https://www.cashfree.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# IP Whitelisting

> Learn how to whitelist your IP address in the Cashfree Payments production server to authenticate API requests.

Whitelisting your IP address provides a layer of authentication. This prevents unauthorised API requests and ensures only verified requests are processed.

<Note>
  IP whitelisting is required only for the production environment. The test environment does not require whitelisting.
</Note>

To whitelist your IP address, follow these steps:

1. Log in to the [Merchant Dashboard](https://merchant.cashfree.com/auth/login). Go to **Developers > Two-Factor Authentication** under the **Secure ID** card.
2. Select **IP Whitelist** from the **Select 2FA Method** drop-down.
3. Select **Add IP Address**.
4. Enter the IP address you want to whitelist and select **Add IP Address** to save.

The whitelisted IP addresses are displayed in the grid.

<img src="https://mintcdn.com/cashfreepayments-d00050e9/Kmx9_F-Zyh5NOURB/static/secure-id/get-started/integration/Screenshot_2024-01-03_at_2.03.39_PM.png?fit=max&auto=format&n=Kmx9_F-Zyh5NOURB&q=85&s=6ded36ce00dc24b0b345fb393e2d56cd" alt="Grid showing whitelisted IP addresses in the Cashfree Secure ID dashboard" width="3456" height="1986" data-path="static/secure-id/get-started/integration/Screenshot_2024-01-03_at_2.03.39_PM.png" />

<Note>
  * Whitelist your IPv4 address only. IPv6 addresses are not supported.
  * You can whitelist a maximum of 10 IP addresses.
  * Generate your API credentials before you set up two-factor authentication (2FA).
  * Ensure that you whitelist a public IP address. Cashfree does not support private IP addresses, including the 10.x.x.x, 172.16.x.x–172.31.x.x, and 192.168.x.x ranges, as these are not accessible over the public internet.
</Note>

## How to find your IP address

Depending on your operating system, you can retrieve your system's IP address using multiple methods. You can also find your public IP address using a service such as [whatismyipaddress.com](https://whatismyipaddress.com/).

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    <span>Related topics</span>
  </p>

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    <li><a href="/docs/secure-id/get-started/integration/go-live-checklist">Go-live Checklist</a></li>
    <li><a href="/docs/secure-id/get-started/integration/integration-verify-bank-account">Integration Guide</a></li>
    <li><a href="/docs/api-reference/vrs/v2/bav-v2/bank-account-verification-sync-v2">Bank Account Verification API</a></li>
    <li><a href="/docs/help/secure-id/general-faqs">Secure ID FAQs</a></li>
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</div>