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[ZT] WARP local network exclusion #17912

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Nov 1, 2024
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[ZT] WARP local network exclusion #17912

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614ab38
PCX-12488
ranbel Oct 31, 2024
639884a
update android instructions
ranbel Oct 31, 2024
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32 changes: 29 additions & 3 deletions ...are-one/connections/connect-devices/warp/configure-warp/warp-settings/index.mdx
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Expand Up @@ -5,7 +5,7 @@ sidebar:
order: 2
---

import { Details, GlossaryTooltip, InlineBadge, Render } from "~/components";
import { Details, GlossaryTooltip, InlineBadge, Render, Tabs, TabItem} from "~/components";

WARP settings define the WARP client modes and permissions available to end users.

Expand Down Expand Up @@ -237,15 +237,16 @@ Creates [Split Tunnel](/cloudflare-one/connections/connect-devices/warp/configur
| Windows | ✅ | 2024.1.159.0 |
| macOS | ✅ | 2024.1.160.0 |
| Linux | ✅ | 2024.2.62.0 |
| iOS | ❌ | |
| iOS | ❌ | N/A[^1] |
| Android | ✅ | 1.4 |
| ChromeOS | ✅ | 1.4 |

[^1]: Current versions of iOS do not allow LAN traffic to route through the WARP tunnel. Therefore, this feature is not needed on iOS.
</Details>

This setting is intended as a workaround for users whose home network uses the same set of IP addresses as your corporate private network. To use this setting, **Split Tunnels** must be set to **Exclude IPs and domains**.

When `Enabled`, users have the option to access local network resources (such as printers and storage devices) while connected to WARP. When the user enables **Access local network** in the WARP GUI, WARP will detect the local IP range advertised by the user's home network (for example, `10.0.0.0/24`) and temporarily exclude this range from the WARP tunnel. The user will need to re-request access after the **Timeout** expires. Setting **Timeout** to `0 minutes` will allow LAN access until the next WARP reconnection, such as a reboot or a laptop waking from sleep.
When `Enabled`, users have the option to access local network resources (such as printers and storage devices) while connected to WARP. When the user turns on [**Access Local Network**](#access-local-network-as-a-user), WARP will detect the local IP range advertised by the user's home network (for example, `10.0.0.0/24`) and temporarily exclude this range from the WARP tunnel. The user will need to re-request access after the **Timeout** expires. Setting **Timeout** to `0 minutes` will allow LAN access until the next WARP reconnection, such as a reboot or a laptop waking from sleep.

:::caution[Warning]

Expand All @@ -256,6 +257,31 @@ Enabling this setting comes with two major consequences:

:::

#### Access local network as a user

To turn on local network access in the WARP client:

<Tabs> <TabItem label="Windows and macOS">

1. Select the Cloudflare logo in the menu bar.
2. Select the gear icon.
3. Select **Access Local Network**.
</TabItem> <TabItem label="Linux">

1. Open a terminal window.
2. Run `warp-cli override local-network start`.

</TabItem>

<TabItem label="Android and ChromeOS">

1. Open the Cloudflare One Agent app.
2. Go to **Settings** > **Advanced** > **Connection Options**.
3. Select **Access Local Network**.
</TabItem>

</Tabs>

#### Limitations

- WARP will only exclude local networks in the [RFC 1918](https://datatracker.ietf.org/doc/html/rfc1918) address space. Other IP addresses such as CGNAT are not supported.
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