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Copy file name to clipboardExpand all lines: src/content/docs/cloudflare-one/connections/connect-devices/warp/configure-warp/warp-settings/index.mdx
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</Details>
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When `Enabled`, the WARP client will [automatically install](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/install-cert-with-warp/) your organization's root certificate on the device.
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When `Enabled`, the WARP client will [automatically install](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/automated-deployment/) your organization's root certificate on the device.
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### Override local interface IP <InlineBadgepreset="beta" />
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You can set multiple certificates to **Active**, but you can only turn on one certificate for use in inspection at a time. Setting a certificate as **In-Use** will set any other turned on certificates as **Active** and prevent them from being used for inspection until turned on again.
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Once you deploy your certificate across Cloudflare and turn it on, you can install it on your user's devices either [with WARP](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/install-cert-with-warp/) or [manually](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/manual-deployment/).
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Once you deploy your certificate across Cloudflare and turn it on, you can install it on your user's devices either [with WARP](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/automated-deployment/) or [manually](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/manual-deployment/).
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:::
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If your device does not support [certificate installation via WARP](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/install-cert-with-warp/), you can manually install the Cloudflare certificate. You must add the certificate to both the [system keychain](#add-the-certificate-to-operating-systems) and to [individual application stores](#add-the-certificate-to-applications). These steps must be performed on each new device that is to be subject to HTTP filtering.
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If your device does not support [certificate installation via WARP](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/automated-deployment/), you can manually install the Cloudflare certificate. You must add the certificate to both the [system keychain](#add-the-certificate-to-operating-systems) and to [individual application stores](#add-the-certificate-to-applications). These steps must be performed on each new device that is to be subject to HTTP filtering.
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@@ -100,7 +100,7 @@ If you see this warning, you may have to disable DNS over HTTPS setting in Firef
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## Chrome shows `NET::ERR_CERT_AUTHORITY_INVALID` when I use the WARP client.
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Advanced security features including HTTPS traffic inspection require you to deploy a [root certificate](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/) on the device. If [**Install CA to system certificate store**](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/install-cert-with-warp/) is enabled, the WARP client will automatically install a new root certificate whenever you install or update WARP.
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Advanced security features including HTTPS traffic inspection require you to deploy a [root certificate](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/) on the device. If [**Install CA to system certificate store**](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/automated-deployment/) is enabled, the WARP client will automatically install a new root certificate whenever you install or update WARP.
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Certain web browsers (such as Chrome and Microsoft Edge) load and cache root certificates when they start. Therefore, if you install a root certificate while the browser is already running, the browser may not detect the new certificate. To resolve the error, restart the browser.
[TLS decryption](https://www.cloudflare.com/learning/security/what-is-https-inspection/) allows Cloudflare Gateway to inspect HTTPS requests to your private network applications.
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## Should I enable TLS decryption?
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With TLS decryption enabled, you will be able to apply advanced policies such as scanning for sensitive data, starting a remote browser isolation session, and filtering based on the complete URL and path of requests. These features can increase the security posture of sensitive systems, but TLS decryption can also break your users' access to certain resources. For instance, if your internal applications use self-signed certificates, you will need to either configure a [Do Not Inspect](/cloudflare-one/policies/gateway/http-policies/#do-not-inspect) policy or an [Untrusted certificate *Pass through*](/cloudflare-one/policies/gateway/http-policies/#untrusted-certificates) policy to allow users to connect. To learn more, refer to [TLS decryption limitations](/cloudflare-one/policies/gateway/http-policies/tls-decryption/#inspection-limitations).
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With TLS decryption enabled, you will be able to apply advanced policies such as scanning for sensitive data, starting a remote browser isolation session, and filtering based on the complete URL and path of requests. These features can increase the security posture of sensitive systems, but TLS decryption can also break your users' access to certain resources. For instance, if your internal applications use self-signed certificates, you will need to either configure a [Do Not Inspect](/cloudflare-one/policies/gateway/http-policies/#do-not-inspect) policy or an [Untrusted certificate _Pass through_](/cloudflare-one/policies/gateway/http-policies/#untrusted-certificates) policy to allow users to connect. To learn more, refer to [TLS decryption limitations](/cloudflare-one/policies/gateway/http-policies/tls-decryption/#inspection-limitations).
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With TLS decryption disabled, Gateway can only inspect unencrypted HTTP requests. However, you can still apply policies to HTTPS traffic based on user identity, device posture, IP, resolved domain, SNI, and other attributes that support a Zero Trust security implementation. Refer to the [Gateway HTTP policies documentation](/cloudflare-one/policies/gateway/http-policies/) for more information.
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## Configure user-side certificates
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When you enable TLS decryption, Gateway will decrypt all traffic sent over HTTPS, apply your HTTP policies, and then re-encrypt the request with a certificate on the user device. You can either [install the certificate provided by Cloudflare](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/install-cert-with-warp/) (default option) or [upload a custom root certificate](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/custom-certificate/) to Cloudflare (Enterprise-only option).
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When you enable TLS decryption, Gateway will decrypt all traffic sent over HTTPS, apply your HTTP policies, and then re-encrypt the request with a certificate on the user device. You can either [install the certificate provided by Cloudflare](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/automated-deployment/) (default option) or [upload a custom root certificate](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/custom-certificate/) to Cloudflare (Enterprise-only option).
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### Best practices
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Deploying the Cloudflare root certificate is the simplest way to get started with TLS decryption and is usually appropriate for testing or proof of concept conditions.
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If you already have a certificate that you use for other inspection or trust purposes, we recommend uploading your own root certificate for the following reasons:
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* Using a single certificate streamlines IT management.
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* If other services (such as git workflows, other cli tools, or thick client applications) rely on an existing certificate store, presenting the same certificate in inspection is far less likely to interrupt their traffic flow.
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* If you are using WARP Connector to connect devices to Cloudflare, those devices will not be able to leverage HTTP policies that require decrypting TLS unless they have a certificate that matches either your uploaded certificate or the Cloudflare root certificate. It is more likely that your network infrastructure already has your own device certificates deployed, so using the existing PKI infrastructure for inspection will reduce the number of steps needed to deploy Zero Trust.
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- Using a single certificate streamlines IT management.
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- If other services (such as git workflows, other cli tools, or thick client applications) rely on an existing certificate store, presenting the same certificate in inspection is far less likely to interrupt their traffic flow.
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- If you are using WARP Connector to connect devices to Cloudflare, those devices will not be able to leverage HTTP policies that require decrypting TLS unless they have a certificate that matches either your uploaded certificate or the Cloudflare root certificate. It is more likely that your network infrastructure already has your own device certificates deployed, so using the existing PKI infrastructure for inspection will reduce the number of steps needed to deploy Zero Trust.
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:::note[MDM deployments]
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Many customers [deploy WARP](/learning-paths/replace-vpn/connect-devices/) onto devices in production using an MDM tool like JAMF or InTune. Cloudflare has the ability to deploy the root certificate along with the device, but this could be more consistently and holistically configured within the MDM, where other certificates are presumably managed, trusted, and stored.
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Many customers [deploy WARP](/learning-paths/replace-vpn/connect-devices/) onto devices in production using an MDM tool like JAMF or InTune. Cloudflare has the ability to deploy the root certificate along with the device, but this could be more consistently and holistically configured within the MDM, where other certificates are presumably managed, trusted, and stored.
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### 3. Determine the certificate used for inspection
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TLS inspection requires a trusted private root certificate to be able to inspect and filter encrypted traffic. The [default Cloudflare root certificate](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/install-cert-with-warp/) is a simple and common solution that is usually appropriate for testing or proof-of-concept conditions when deployed to your devices.
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TLS inspection requires a trusted private root certificate to be able to inspect and filter encrypted traffic. The [default Cloudflare root certificate](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/automated-deployment/) is a simple and common solution that is usually appropriate for testing or proof-of-concept conditions when deployed to your devices.
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Alternatively, if you already have a root CA that you use for other inspection or trust applications, we recommend [using your own certificate](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/custom-certificate/). A few reasons for this include:
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## HTTPS filtering
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In order to inspect HTTPS traffic, you need to install the Cloudflare root certificate on each client device. You can use the [WARP client](/cloudflare-one/connections/connect-devices/warp/) to [automatically install the Cloudflare certificate](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/install-cert-with-warp/) on supported devices. If your device or application does not support certificate installation via WARP, you can [manually install the certificate](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/manual-deployment/). The certificate is required for Cloudflare to [decrypt TLS](/cloudflare-one/policies/gateway/http-policies/tls-decryption/).
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In order to inspect HTTPS traffic, you need to install the Cloudflare root certificate on each client device. You can use the [WARP client](/cloudflare-one/connections/connect-devices/warp/) to [automatically install the Cloudflare certificate](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/automated-deployment/) on supported devices. If your device or application does not support certificate installation via WARP, you can [manually install the certificate](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/manual-deployment/). The certificate is required for Cloudflare to [decrypt TLS](/cloudflare-one/policies/gateway/http-policies/tls-decryption/).
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If you cannot or do not want to install the certificate, you can create [Do Not Inspect](/cloudflare-one/policies/gateway/http-policies/#do-not-inspect) policies to exempt incompatible Magic WAN traffic from inspection or to disable TLS decryption entirely. Because Gateway cannot discern Magic WAN traffic, you must use [WARP client checks](/cloudflare-one/identity/devices/warp-client-checks/) or the IP addresses associated with Magic WAN to match traffic with Gateway policies. For example, if your organization onboards devices to Magic WAN via WARP, you can exempt devices not running WARP using [OS version checks](/cloudflare-one/identity/devices/warp-client-checks/os-version/):
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