> For the complete documentation index, see [llms.txt](https://docs.islandrouter.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.islandrouter.com/island-router-cli-2.3.2/commands/ip-global-context/ip-firewall.md).

# ip firewall

## Syntax

```
[no] ip firewall off|on
```

## Syntax Description

<table><thead><tr><th width="203">Keyword</th><th>Description</th></tr></thead><tbody><tr><td>no</td><td>(Optional) Returns the Internet firewall to its default state.</td></tr><tr><td>off</td><td>Disables the Internet firewall</td></tr><tr><td>on</td><td>Enables the Internet firewall</td></tr></tbody></table>

## Defaults

The inbound Internet firewall is on by default.

## Usage Guidelines

This command disables the firewall function that blocks incoming traffic on a WAN interface. It takes effect only when there is a single physical port active on the Island.

This command should be used with extreme care and is intended only for very specific use cases such as using Island as a dedicated VPN concentrator, where firewall functionality is undesirable or handled by an external firewall. Note that all other Island functionality, including content filtering, is still active even when the firewall is disabled.

## Examples

```
ip firewall off
```

## Related Commands


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