> For the complete documentation index, see [llms.txt](https://docs.snyk.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.snyk.io/scan-fix-and-prevent/scan-with-snyk/snyk-api-web/configure-targets/configure-authentication/configure-mutual-tls.md).
# Mutual TLS
How to configure mutual TLS for Snyk API and Web targets
Configure mutual TLS (mTLS) authentication for targets that require client-side certificates.
Unlike standard TLS, which authenticates only the server, mutual TLS is an enhanced security protocol where both the client and server authenticate using digital certificates.
## Prerequisites
* You must have the **change target settings** permission
* You must have your client authentication certificate (`.p12` or `.pfx` format)
* You must have the corresponding certificate password
* Your account plan must include this feature
## Upload the certificate
1. Navigate to the **Targets** page.
2. Click the **gear icon** to access the target settings.
3. Select the **Authentication** tab and locate the **Client Authentication Certificate** section.
4. Upload your `.p12` or `.pfx` certificate file.
5. Enter the **Certificate Password** required to decrypt the file.
6. Click **Save**.
## Verify the configuration
After you save the configuration, mutual TLS authentication is enabled. The next scan against this target automatically uses the configured mTLS certificates.
Important: For your security, Snyk obfuscates all sensitive fields (certificates and passwords) after saving. You cannot view or retrieve them again.
## Manage the configuration
You can manage these settings anytime from your target's **Authentication** tab:
* To temporarily disable the setting, use the **Off/On** toggle
* To permanently remove the configuration, use the **Delete** button
---
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