# Web Security

## Access Control Allow Origins

`--access-control-allow-origins`

Type: String\[]

Default: \["\*"]

Accepts a comma-separated lists of origin domains that will be allowed as the Access-Control-Allow-Origin HTTP header. Defaults to \* if not set which allows all origin domains.

## Secure Header Development

`--secure-header-development`

Type: Boolean

Default: true

If set, runs our secure header middleware in development mode, which disables some of the options. The default is true to make it easy to run a node locally. See <https://github.com/unrolled/secure> for more info.

## Secure Header Allow Hosts

`--secure-header-allow-hosts`

Type: String\[]

Default: \[],

This is the domain that our secure middleware will accept requests from. We also set the HTTP Access-Control-Allow-Origin

##


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.deso.org/deso-backend/configuration/web-security.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.